Noise

[Bukitoo]

Hi !!!
I just want to know some precautions in a design of an amplifier about noise reduction !
Thanks !

 

[Frank Berry]

Noise within an amplifier can come from many sources.
You can minimize noise by paying close attention to the following:

1. Adequate Power Supply filtering.
2. Proper grounding techniques.
3. Proper signal routing.
4. The use of shielded cables where necessary.
5. Using a well shielded enclosure.

Anything else anyone?

 

[Christer]

If it is a low-level application like a phono amp it is also important
to choose low-noise components at critical places. Low-noise
BJTs/JFETs/op-amps, and low-value resistors etc.