Skip to main content
3 votes

Issues with Audio Amplifier Circuit - No Output Signal with Capacitor, noise

I'm not sure how you expect Q2/Q3 to work, but with just a pullup resistor to the base they're going to be turned on all the time. Only the largest of negative signal peaks are going to produce a ...
Finbarr's user avatar
  • 5,836
3 votes

Custom PCB to make a high-precision, low-current voltage source "fix" drift in a lower-precision, high-current current source

No need for high-side sense, in fact it's better low-side. Other changes are suggested as well: Note the Yokogawa isn't doing much here, and can be discarded. U3 is setting reference. If you need ...
Tim Williams's user avatar
  • 39.2k
1 vote

Voltage unexpected noise

The noise source might be prior to the regulator, and the regulator would not do well to remove such high frequencies. you should measure at the input of the regulator too, being sure to attach the ...
Simon Fitch's user avatar
  • 38.3k
1 vote
Accepted

Filter for supply voltage of amplifiers

Yes, use some R-C (or L-C) filtering on power supplies. You should use a circuit like this one. Be sure that the ground should be as nearest the supplies pins (possibly "between"). Sometimes,...
Antonio51's user avatar
  • 14.4k
1 vote

Can a high-precision, low-current voltage source "fix" drift in a lower-precision, high-current current source?

This is not going to work. What you would have from your diagram is a voltage source. So the current will change with the resistance. Even if the connections are perfect, if it's a copper coil, it ...
Spehro Pefhany's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible