Silencing an el-cheapo USB phantom power supply.

[k brown]

I don't understand what you guys are on about - I solved the noise with 2 cents worth of parts.

 

[MicUlli]

I don't understand what you guys are on about - I solved the noise with 2 cents worth of parts.

Thats true. Spend 3 cents for an additional NPN transistor connected as emitter follower, cap from base to GND, output is emitter, resistor from collector to base, collector to voltage source. Known as cap multiplier. Advantage is only 1..2 V voltage drop...