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?


2 comments:

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

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

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