Post History
I'd like to use a 555 timer as carrier wave generator at ~ 50 kHz and modulate the amplitude with an external digital signal at ~ 1 kHz. The pulse width remains constant at 10us (50% duty cycle)....
#2: Post edited
by
mrwavelets
·
2021-03-17T14:12:46Z (over 3 years ago)
- I'd like to use a 555 timer as carrier wave generator at ~ 50 kHz
- and modulate the amplitude with an external digital signal at ~ 1 kHz.
- The pulse width remains constant at 10us (50% duty cycle).
- Do you suggest to add MOSFET on the OUT pin of 555 timer, or can I
- connect the signal directly to a pin of the 555 timer?
I saw [here](https://docs.google.com/document/d/1g9W8EKqQF0oyllOkL7okolxUA2IhbR091GHX5WGpqIc/edit?usp=sharing) that the digital signal is plugged directly into- the RESET pin. Does this have undesirable side effects,
- or is it a good practice?
- Thanks!
- I'd like to use a 555 timer as carrier wave generator at ~ 50 kHz
- and modulate the amplitude with an external digital signal at ~ 1 kHz.
- The pulse width remains constant at 10us (50% duty cycle).
- Do you suggest to add MOSFET on the OUT pin of 555 timer, or can I
- connect the signal directly to a pin of the 555 timer?
- I saw [here](http://web.mit.edu/6.117/www/lab5.pdf) that the digital signal is plugged directly into
- the RESET pin. Does this have undesirable side effects,
- or is it a good practice?
- Thanks!
#1: Initial revision
by
mrwavelets
·
2021-03-17T09:35:05Z (over 3 years ago)
555 timer, PAM with digital signal
I'd like to use a 555 timer as carrier wave generator at ~ 50 kHz and modulate the amplitude with an external digital signal at ~ 1 kHz. The pulse width remains constant at 10us (50% duty cycle). Do you suggest to add MOSFET on the OUT pin of 555 timer, or can I connect the signal directly to a pin of the 555 timer? I saw [here](https://docs.google.com/document/d/1g9W8EKqQF0oyllOkL7okolxUA2IhbR091GHX5WGpqIc/edit?usp=sharing) that the digital signal is plugged directly into the RESET pin. Does this have undesirable side effects, or is it a good practice? Thanks!