Friday, January 7, 2022

RC transmitter in sim

 The multivibrator chops the RF signal by switching the darlington pair on/off. The Darlington supplies power to the oscillator.

The antenna is open circuit and the standing waves are there but you can see the switching.

Placing a resistor for the antenna produces a cleaner out put.

I have no data on the antenna. Something else to investigate?


  1. The waveforms in the second screenshot look unusually rough. Could you be getting temporal aliasing due to an overly-large timestep?

  2. Could be. Could be standing wave due to no antenna losd.