AM transmitter waveform clipping on negative cycle—causes for modulation cutoff?

60 1

ADVERTISEMENT

Report a violation of the law

Reply | New topic

#1 21675792 24 Apr 2016 10:26

Ryan Daly Ryan Daly

Anonymous

Post #1
21675792 24 Apr 2016 10:26

I'm currently in the process of building an AM radio transmitter, and it's working, but not great. When modulating the signal, a section of the negative part of the wave is being cut off. Does anyone know what might cause this to happen? Here's an image pulled from the oscilloscope, with the input signal (yellow) and the modulation (blue):

http://i.imgur.com/IScyX5z.png
ADVERTISEMENT
#2 21675793 25 Apr 2016 17:41

richard gabric richard gabric

Anonymous

Post #2
21675793 25 Apr 2016 17:41

without seeing a schematic with dc and ac voltages on the key nodes, impossible to say,
cheers,
Richard
Create an account, log in here. You will receive points by participating in discussions.
Join this discussion.

Install Elektroda application

Didn't find an answer? Ask Artificial Intelligence

*I agree to send the question to OpenAI, Anthropic PBC, Perplexity AI, Inc., Kagi Inc., Google LLC - owners of language models in order to prepare the best response. The companies may monitor and log information entered into the form.

*I agree to publicly display my question and answer. The question and answer will be publicly available to everyone. The process may take a few minutes. Upon completion, you will be redirected to the page with the answer.

Wait...(2min)

Reply | New topic

Report a violation of the law

ADVERTISEMENT