First chip amp, please look over my ideas - Page 3

AndrewT · 23rd September 2011, 06:40 PM

the summing inverter and/or the re-inverting inverter can both be used with +ve gain and with -ve gain.

zepple · 3rd October 2011, 01:28 PM

You may want to move the 220pF C402 as close as possible to the input, or even solder across the post's terminals. It will prevent RF picked up from the cables from radiating inside the chassis.

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23rd September 2011, 06:40 PM	#21
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	the summing inverter and/or the re-inverting inverter can both be used with +ve gain and with -ve gain.

3rd October 2011, 01:28 PM	#22
zepple diyAudio Member Join Date: Oct 2011	You may want to move the 220pF C402 as close as possible to the input, or even solder across the post's terminals. It will prevent RF picked up from the cables from radiating inside the chassis.