PWM AUDIO AM MODULATOR ( pwm am transmitter modulator)

Description

This is a high efficiency P.W.M  Audio AM modulator for class D or E transmitters.
It consists of two boards.
one is the pwm generator - a high quality PWM generator (broadcast audio quality)  for AM  class E or D transmitters.
Audio responce  30hz - 12khz .
(low pass 12khz 3rd order sallen-key filter).
13-15vdc power supply 50ma.
Audio input 10k  .
It is based on an xtal oscillator  and ultra fast comparator.
Output frequency @ 125khz.
Second board is the PWM output board and PWM  low pass filter .
The pwm output  filter  is desing for a load of + -  6 ohm.( i can change the output filter load in order if you desire).
Power supply 12vdc 200ma
High voltage power supply input  max 150vdc 10A.
With this modulator you can drive a 500watt + carrier  transmitter.
You need a heatsink  to put the output mosfets .
with the boards you will receive complete instructions .
For more info contact us .. !
Attention!
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