Hi there,

I'm working with a differential amplifier and, in an attempt to reduce noise, I moved from a DC power supply machine to batteries of 9V (same voltage). However, just when I switch to battery supply, I can see in my oscilloscope how I lose the signal I generated.

If the voltage for power supply is the same, why does it stop working? Are all batteries suitable for this task?

Thank you very much!

 

hi L,
Welcome to AAC.
What is the current drawn by your diff amplifier.?
Please post a circuit diagram.
E

 

Thanks i just found out what the problem was

Thanks anw

 

hi,
Please tell us what the problem was, it may help others.
E