555 timer FM transmitterBuilding a UHF FM audio transmitter555 Timer Monostable Mode Self Triggering555 timer as FM transmitter vs. Tank Circuit555 timer digital clockOriginal 555 timer transistor output implementationCan Pulsed DC be used in a radio transmitter?How to improve design of naive MW AM transmitter for lab demoDriving LED with 555 timer and BC639 transistorInverted 555 Monostable Timer With a Sustained InputHow to make 555 timer output fall

How to write a column outside the braces in a matrix?

Overlay of two functions leaves gaps

Initiative: Do I lose my attack/action if my target moves or dies before my turn in combat?

Rivers without rain

Betweenness centrality formula

How to limit Drive Letters Windows assigns to new removable USB drives

Which big number is bigger?

How does Captain America channel this power?

How to prevent z-fighting in OpenSCAD?

Is there really no use for MD5 anymore?

How exactly does Hawking radiation decrease the mass of black holes?

Was there a shared-world project before "Thieves World"?

Phrase for the opposite of "foolproof"

Critique of timeline aesthetic

Minor Revision with suggestion of an alternative proof by reviewer

How to denote matrix elements succinctly?

Do I have an "anti-research" personality?

As an international instructor, should I openly talk about my accent?

What term is being referred to with "reflected-sound-of-underground-spirits"?

"Whatever a Russian does, they end up making the Kalashnikov gun"? Are there any similar proverbs in English?

On The Origin of Dissonant Chords

Function pointer with named arguments?

can anyone help me with this awful query plan?

Could the terminal length of components like resistors be reduced?



555 timer FM transmitter


Building a UHF FM audio transmitter555 Timer Monostable Mode Self Triggering555 timer as FM transmitter vs. Tank Circuit555 timer digital clockOriginal 555 timer transistor output implementationCan Pulsed DC be used in a radio transmitter?How to improve design of naive MW AM transmitter for lab demoDriving LED with 555 timer and BC639 transistorInverted 555 Monostable Timer With a Sustained InputHow to make 555 timer output fall






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








1












$begingroup$


So online, I found this 555 timer FM modulator circuit. But To make this a working FM transmitter, is all I have to do is attach an antenna to the output modulated signal? Or do I have to also have a series LC resonant circuit tuned to the carrier frequency?



Link: FM Modulator Circuit Using 555 Timer IC



Circuit:



Schematic of FM Modulator Circuit Using 555 Timer IC










share|improve this question









New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$







  • 1




    $begingroup$
    If you add a link to the article where you found this we might be able to point out some context that you've missed. Hit the edit button below your question ...
    $endgroup$
    – Transistor
    4 hours ago






  • 2




    $begingroup$
    I don't think you're going to ever have much luck using a 555 timer as an FM transmitter.
    $endgroup$
    – Hearth
    4 hours ago

















1












$begingroup$


So online, I found this 555 timer FM modulator circuit. But To make this a working FM transmitter, is all I have to do is attach an antenna to the output modulated signal? Or do I have to also have a series LC resonant circuit tuned to the carrier frequency?



Link: FM Modulator Circuit Using 555 Timer IC



Circuit:



Schematic of FM Modulator Circuit Using 555 Timer IC










share|improve this question









New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$







  • 1




    $begingroup$
    If you add a link to the article where you found this we might be able to point out some context that you've missed. Hit the edit button below your question ...
    $endgroup$
    – Transistor
    4 hours ago






  • 2




    $begingroup$
    I don't think you're going to ever have much luck using a 555 timer as an FM transmitter.
    $endgroup$
    – Hearth
    4 hours ago













1












1








1





$begingroup$


So online, I found this 555 timer FM modulator circuit. But To make this a working FM transmitter, is all I have to do is attach an antenna to the output modulated signal? Or do I have to also have a series LC resonant circuit tuned to the carrier frequency?



Link: FM Modulator Circuit Using 555 Timer IC



Circuit:



Schematic of FM Modulator Circuit Using 555 Timer IC










share|improve this question









New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




So online, I found this 555 timer FM modulator circuit. But To make this a working FM transmitter, is all I have to do is attach an antenna to the output modulated signal? Or do I have to also have a series LC resonant circuit tuned to the carrier frequency?



Link: FM Modulator Circuit Using 555 Timer IC



Circuit:



Schematic of FM Modulator Circuit Using 555 Timer IC







555 radio






share|improve this question









New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 3 hours ago









Greenonline

93821023




93821023






New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 4 hours ago









HighvoltagemathHighvoltagemath

63




63




New contributor




Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Highvoltagemath is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







  • 1




    $begingroup$
    If you add a link to the article where you found this we might be able to point out some context that you've missed. Hit the edit button below your question ...
    $endgroup$
    – Transistor
    4 hours ago






  • 2




    $begingroup$
    I don't think you're going to ever have much luck using a 555 timer as an FM transmitter.
    $endgroup$
    – Hearth
    4 hours ago












  • 1




    $begingroup$
    If you add a link to the article where you found this we might be able to point out some context that you've missed. Hit the edit button below your question ...
    $endgroup$
    – Transistor
    4 hours ago






  • 2




    $begingroup$
    I don't think you're going to ever have much luck using a 555 timer as an FM transmitter.
    $endgroup$
    – Hearth
    4 hours ago







1




1




$begingroup$
If you add a link to the article where you found this we might be able to point out some context that you've missed. Hit the edit button below your question ...
$endgroup$
– Transistor
4 hours ago




$begingroup$
If you add a link to the article where you found this we might be able to point out some context that you've missed. Hit the edit button below your question ...
$endgroup$
– Transistor
4 hours ago




2




2




$begingroup$
I don't think you're going to ever have much luck using a 555 timer as an FM transmitter.
$endgroup$
– Hearth
4 hours ago




$begingroup$
I don't think you're going to ever have much luck using a 555 timer as an FM transmitter.
$endgroup$
– Hearth
4 hours ago










3 Answers
3






active

oldest

votes


















3












$begingroup$

The original article states




The carrier frequency is set using the 5 kΩ potentiometer behaving as a potential divider with one end at Vcc and the other at ground. The frequency of the free running oscillator is set to approximately 455.50 kHz.




This is not in the FM radio band which extends from about 88 to 108 MHz so you will not be able to pick this up on your radio - unless you somehow manage to generate the right harmonics.



The preceding paragraph says




Here is a frequency modulation (FM) circuit that uses a 555 timer in astable mode to generate a sine wave carrier. GCSE students might find it interesting as they are often playing with the 555 timer IC.




GCSE is a UK second level school standard so I suspect that this might be part of a course studying basic electronics and that a matching receiver would be required.






share|improve this answer









$endgroup$




















    1












    $begingroup$

    The North America FM band is around 100MHz, which is a couple orders of magnitude higher frequency than a 555 can manage. You would also want a sinusoidal output so as not to splatter harmonics all over the spectrum (at odd integer multiples of the base frequency).






    share|improve this answer









    $endgroup$




















      1












      $begingroup$

      The author is confusing you with free running oscillator set to approximately 455.50 kHz which is the down-converted intermediate freq. , or IF frequency used for an AM radio.



      FM radio's use 10.7 MHz for the IF filter.



      This 555 timer circuit can generate FM square waves as a voltage controlled Astable from 3.3kHz to 4.4kHz but neither useful for AM or FM radios. 555's are never used in radio designs or any serious design for that matter.



      Mr. Peter J. Vis appears to have good Windows/Network/Router skills but weak on Electronic design. I would look elsewhere for better basic electronics books such as on my profile.






      share|improve this answer









      $endgroup$












      • $begingroup$
        @ Sunnyskyguy EE75 Thanks!
        $endgroup$
        – Highvoltagemath
        3 hours ago











      Your Answer






      StackExchange.ifUsing("editor", function ()
      return StackExchange.using("schematics", function ()
      StackExchange.schematics.init();
      );
      , "cicuitlab");

      StackExchange.ready(function()
      var channelOptions =
      tags: "".split(" "),
      id: "135"
      ;
      initTagRenderer("".split(" "), "".split(" "), channelOptions);

      StackExchange.using("externalEditor", function()
      // Have to fire editor after snippets, if snippets enabled
      if (StackExchange.settings.snippets.snippetsEnabled)
      StackExchange.using("snippets", function()
      createEditor();
      );

      else
      createEditor();

      );

      function createEditor()
      StackExchange.prepareEditor(
      heartbeatType: 'answer',
      autoActivateHeartbeat: false,
      convertImagesToLinks: false,
      noModals: true,
      showLowRepImageUploadWarning: true,
      reputationToPostImages: null,
      bindNavPrevention: true,
      postfix: "",
      imageUploader:
      brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
      contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
      allowUrls: true
      ,
      onDemand: true,
      discardSelector: ".discard-answer"
      ,immediatelyShowMarkdownHelp:true
      );



      );






      Highvoltagemath is a new contributor. Be nice, and check out our Code of Conduct.









      draft saved

      draft discarded


















      StackExchange.ready(
      function ()
      StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f435637%2f555-timer-fm-transmitter%23new-answer', 'question_page');

      );

      Post as a guest















      Required, but never shown

























      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      3












      $begingroup$

      The original article states




      The carrier frequency is set using the 5 kΩ potentiometer behaving as a potential divider with one end at Vcc and the other at ground. The frequency of the free running oscillator is set to approximately 455.50 kHz.




      This is not in the FM radio band which extends from about 88 to 108 MHz so you will not be able to pick this up on your radio - unless you somehow manage to generate the right harmonics.



      The preceding paragraph says




      Here is a frequency modulation (FM) circuit that uses a 555 timer in astable mode to generate a sine wave carrier. GCSE students might find it interesting as they are often playing with the 555 timer IC.




      GCSE is a UK second level school standard so I suspect that this might be part of a course studying basic electronics and that a matching receiver would be required.






      share|improve this answer









      $endgroup$

















        3












        $begingroup$

        The original article states




        The carrier frequency is set using the 5 kΩ potentiometer behaving as a potential divider with one end at Vcc and the other at ground. The frequency of the free running oscillator is set to approximately 455.50 kHz.




        This is not in the FM radio band which extends from about 88 to 108 MHz so you will not be able to pick this up on your radio - unless you somehow manage to generate the right harmonics.



        The preceding paragraph says




        Here is a frequency modulation (FM) circuit that uses a 555 timer in astable mode to generate a sine wave carrier. GCSE students might find it interesting as they are often playing with the 555 timer IC.




        GCSE is a UK second level school standard so I suspect that this might be part of a course studying basic electronics and that a matching receiver would be required.






        share|improve this answer









        $endgroup$















          3












          3








          3





          $begingroup$

          The original article states




          The carrier frequency is set using the 5 kΩ potentiometer behaving as a potential divider with one end at Vcc and the other at ground. The frequency of the free running oscillator is set to approximately 455.50 kHz.




          This is not in the FM radio band which extends from about 88 to 108 MHz so you will not be able to pick this up on your radio - unless you somehow manage to generate the right harmonics.



          The preceding paragraph says




          Here is a frequency modulation (FM) circuit that uses a 555 timer in astable mode to generate a sine wave carrier. GCSE students might find it interesting as they are often playing with the 555 timer IC.




          GCSE is a UK second level school standard so I suspect that this might be part of a course studying basic electronics and that a matching receiver would be required.






          share|improve this answer









          $endgroup$



          The original article states




          The carrier frequency is set using the 5 kΩ potentiometer behaving as a potential divider with one end at Vcc and the other at ground. The frequency of the free running oscillator is set to approximately 455.50 kHz.




          This is not in the FM radio band which extends from about 88 to 108 MHz so you will not be able to pick this up on your radio - unless you somehow manage to generate the right harmonics.



          The preceding paragraph says




          Here is a frequency modulation (FM) circuit that uses a 555 timer in astable mode to generate a sine wave carrier. GCSE students might find it interesting as they are often playing with the 555 timer IC.




          GCSE is a UK second level school standard so I suspect that this might be part of a course studying basic electronics and that a matching receiver would be required.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 4 hours ago









          TransistorTransistor

          89.8k787193




          89.8k787193























              1












              $begingroup$

              The North America FM band is around 100MHz, which is a couple orders of magnitude higher frequency than a 555 can manage. You would also want a sinusoidal output so as not to splatter harmonics all over the spectrum (at odd integer multiples of the base frequency).






              share|improve this answer









              $endgroup$

















                1












                $begingroup$

                The North America FM band is around 100MHz, which is a couple orders of magnitude higher frequency than a 555 can manage. You would also want a sinusoidal output so as not to splatter harmonics all over the spectrum (at odd integer multiples of the base frequency).






                share|improve this answer









                $endgroup$















                  1












                  1








                  1





                  $begingroup$

                  The North America FM band is around 100MHz, which is a couple orders of magnitude higher frequency than a 555 can manage. You would also want a sinusoidal output so as not to splatter harmonics all over the spectrum (at odd integer multiples of the base frequency).






                  share|improve this answer









                  $endgroup$



                  The North America FM band is around 100MHz, which is a couple orders of magnitude higher frequency than a 555 can manage. You would also want a sinusoidal output so as not to splatter harmonics all over the spectrum (at odd integer multiples of the base frequency).







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 4 hours ago









                  Spehro PefhanySpehro Pefhany

                  215k5165440




                  215k5165440





















                      1












                      $begingroup$

                      The author is confusing you with free running oscillator set to approximately 455.50 kHz which is the down-converted intermediate freq. , or IF frequency used for an AM radio.



                      FM radio's use 10.7 MHz for the IF filter.



                      This 555 timer circuit can generate FM square waves as a voltage controlled Astable from 3.3kHz to 4.4kHz but neither useful for AM or FM radios. 555's are never used in radio designs or any serious design for that matter.



                      Mr. Peter J. Vis appears to have good Windows/Network/Router skills but weak on Electronic design. I would look elsewhere for better basic electronics books such as on my profile.






                      share|improve this answer









                      $endgroup$












                      • $begingroup$
                        @ Sunnyskyguy EE75 Thanks!
                        $endgroup$
                        – Highvoltagemath
                        3 hours ago















                      1












                      $begingroup$

                      The author is confusing you with free running oscillator set to approximately 455.50 kHz which is the down-converted intermediate freq. , or IF frequency used for an AM radio.



                      FM radio's use 10.7 MHz for the IF filter.



                      This 555 timer circuit can generate FM square waves as a voltage controlled Astable from 3.3kHz to 4.4kHz but neither useful for AM or FM radios. 555's are never used in radio designs or any serious design for that matter.



                      Mr. Peter J. Vis appears to have good Windows/Network/Router skills but weak on Electronic design. I would look elsewhere for better basic electronics books such as on my profile.






                      share|improve this answer









                      $endgroup$












                      • $begingroup$
                        @ Sunnyskyguy EE75 Thanks!
                        $endgroup$
                        – Highvoltagemath
                        3 hours ago













                      1












                      1








                      1





                      $begingroup$

                      The author is confusing you with free running oscillator set to approximately 455.50 kHz which is the down-converted intermediate freq. , or IF frequency used for an AM radio.



                      FM radio's use 10.7 MHz for the IF filter.



                      This 555 timer circuit can generate FM square waves as a voltage controlled Astable from 3.3kHz to 4.4kHz but neither useful for AM or FM radios. 555's are never used in radio designs or any serious design for that matter.



                      Mr. Peter J. Vis appears to have good Windows/Network/Router skills but weak on Electronic design. I would look elsewhere for better basic electronics books such as on my profile.






                      share|improve this answer









                      $endgroup$



                      The author is confusing you with free running oscillator set to approximately 455.50 kHz which is the down-converted intermediate freq. , or IF frequency used for an AM radio.



                      FM radio's use 10.7 MHz for the IF filter.



                      This 555 timer circuit can generate FM square waves as a voltage controlled Astable from 3.3kHz to 4.4kHz but neither useful for AM or FM radios. 555's are never used in radio designs or any serious design for that matter.



                      Mr. Peter J. Vis appears to have good Windows/Network/Router skills but weak on Electronic design. I would look elsewhere for better basic electronics books such as on my profile.







                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered 3 hours ago









                      Sunnyskyguy EE75Sunnyskyguy EE75

                      72.3k227103




                      72.3k227103











                      • $begingroup$
                        @ Sunnyskyguy EE75 Thanks!
                        $endgroup$
                        – Highvoltagemath
                        3 hours ago
















                      • $begingroup$
                        @ Sunnyskyguy EE75 Thanks!
                        $endgroup$
                        – Highvoltagemath
                        3 hours ago















                      $begingroup$
                      @ Sunnyskyguy EE75 Thanks!
                      $endgroup$
                      – Highvoltagemath
                      3 hours ago




                      $begingroup$
                      @ Sunnyskyguy EE75 Thanks!
                      $endgroup$
                      – Highvoltagemath
                      3 hours ago










                      Highvoltagemath is a new contributor. Be nice, and check out our Code of Conduct.









                      draft saved

                      draft discarded


















                      Highvoltagemath is a new contributor. Be nice, and check out our Code of Conduct.












                      Highvoltagemath is a new contributor. Be nice, and check out our Code of Conduct.











                      Highvoltagemath is a new contributor. Be nice, and check out our Code of Conduct.














                      Thanks for contributing an answer to Electrical Engineering Stack Exchange!


                      • Please be sure to answer the question. Provide details and share your research!

                      But avoid


                      • Asking for help, clarification, or responding to other answers.

                      • Making statements based on opinion; back them up with references or personal experience.

                      Use MathJax to format equations. MathJax reference.


                      To learn more, see our tips on writing great answers.




                      draft saved


                      draft discarded














                      StackExchange.ready(
                      function ()
                      StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f435637%2f555-timer-fm-transmitter%23new-answer', 'question_page');

                      );

                      Post as a guest















                      Required, but never shown





















































                      Required, but never shown














                      Required, but never shown












                      Required, but never shown







                      Required, but never shown

































                      Required, but never shown














                      Required, but never shown












                      Required, but never shown







                      Required, but never shown







                      Popular posts from this blog

                      Disable / Remove link to Product Items in Cart Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern) Announcing the arrival of Valued Associate #679: Cesar Manara Unicorn Meta Zoo #1: Why another podcast?How can I limit products that can be bought / added to cart?Remove item from cartHide “Add to Cart” button if specific products are already in cart“Prettifying” the custom options in cart pageCreate link in cart sidebar to view all added items After limit reachedLink products together in checkout/cartHow to Get product from cart and add it againHide action-edit on cart page if simple productRemoving Cart items - ObserverRemove wishlist items when added to cart

                      Helsingin valtaus Sisällysluettelo Taustaa | Yleistä sotatoimista | Osapuolet | Taistelut Helsingin ympäristössä | Punaisten antautumissuunnitelma | Taistelujen kulku Helsingissä | Valtauksen jälkeen | Tappiot | Muistaminen | Kirjallisuutta | Lähteet | Aiheesta muualla | NavigointivalikkoTeoksen verkkoversioTeoksen verkkoversioGoogle BooksSisällissota Helsingissä päättyi tasan 95 vuotta sittenSaksalaisten ylivoima jyräsi punaisen HelsinginSuomalaiset kuvaavat sotien jälkiä kaupungeissa – katso kuvat ja tarinat tutuilta kulmiltaHelsingin valtaus 90 vuotta sittenSaksalaiset valtasivat HelsinginHyökkäys HelsinkiinHelsingin valtaus 12.–13.4. 1918Saksalaiset käyttivät ihmiskilpiä Helsingin valtauksessa 1918Teoksen verkkoversioTeoksen verkkoversioSaksalaiset hyökkäävät Etelä-SuomeenTaistelut LeppävaarassaSotilaat ja taistelutLeppävaara 1918 huhtikuussa. KapinatarinaHelsingin taistelut 1918Saksalaisten voitonparaati HelsingissäHelsingin valtausta juhlittiinSaksalaisten Helsinki vuonna 1918Helsingin taistelussa kaatuneet valkokaartilaisetHelsinkiin haudatut taisteluissa kaatuneet punaiset12.4.1918 Helsingin valtauksessa saksalaiset apujoukot vapauttavat kaupunginVapaussodan muistomerkkejä Helsingissä ja pääkaupunkiseudullaCrescendo / Vuoden 1918 Kansalaissodan uhrien muistomerkkim

                      Adjektiivitarina Tarinan tekeminen | Esimerkki: ennen | Esimerkki: jälkeen | Navigointivalikko