View Single Post
  #6   Report Post  
Posted to sci.electronics.repair
amdx[_3_] amdx[_3_] is offline
external usenet poster
 
Posts: 706
Default Using a Signal Generator for an "In Home" radio transmitter

On 1/8/2019 6:49 PM, Fox's Mercantile wrote:
On 1/8/19 6:10 PM, amdx wrote:
btw, has anyone tried a class E amplifier as an AM transmitter?
Â*Â*Base/gate drive is transmit frequency, B+ is the audio.
I'll google it.


On of the "Impress kids" kit is an AM transmitter.
It's 1 MHz TTL crystal oscillator.
The Vcc is fed through an audio transformer.

Pretty slick, an AM transmitter with only 2 parts.



Ya, I found some, you do need some DC bias on the secondary of the
transformer.
See page 21, 2nd page from bottom.
https://www.google.com/url?sa=t&rct=...wKR236T gSS4v

Here's an AM transmitter with 3 parts.
https://www.youtube.com/watch?v=YNGs-IX_B2s


Mikek