Jump to content
Electronics-Lab.com Community

Recommended Posts

Many circuits on that website are wrong, especially this one that might NOT be an FM radio. Its transistors are connected with positive feedback that might cause them to oscillate and cause radio interference to a REAL FM radio. Or T2 is saturated and T1 is cutoff and they stay like that. Maybe the transistors are a weird regenerative receiver?

 

If you connect an LED to the output terminals of a power amplifier like the LM386 then its very high output current will blow up the LED in an instant if the supply voltage is high enough for the LM386 to make the LED light up. An LED must have a current-limiting resistor or circuit in series.

 

How are you transmitting data on an FM transmitter? Data is ones and zeros. Are the ones loud sounds and the zeros are no sounds? Or are you using audio-frequency shift keying when ones are a high pitched tone and zeros are a low pitched tone? 

Link to post
Share on other sites
  • 8 months later...
  • 5 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
  • Create New...