RE: Pi filter resistors

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

In Reply to: Pi filter resistors posted by Cousin Billy on January 2, 2016 at 04:46:47:

They are 1000 ohm 1 watt, and supply the voltage amplifier only. The driver circuit has its own power supply leg.

I would take a look at the noise in that supply prior to changing out the HEXFREDs (on the scope its a straight line...). Again, the cross mode rejection of the circuit is excellent so you're not going to win much by changing out the rectifiers.

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Follow Ups Full Thread

Topic - Pi filter resistors - Cousin Billy 04:46:47 01/02/16 (9)

Keep the 1K resistors (or whatever the value)... - Lew 16:40:30 01/18/16 (7)

Addendum - Lew 14:54:50 01/20/16 (6)

Will you Marry Me? - Cousin Billy 01:46:31 01/22/16 (5)

RE: Will you Marry Me? - Lew 07:10:19 01/22/16 (4)

The resistor - Ralph 09:58:21 01/22/16 (3)

I'm sure you're correct. - Lew 11:04:03 01/22/16 (2)

Help identifying the present choke - Cousin Billy 04:16:50 01/25/16 (1)

RE: Help identifying the present choke - Lew 11:17:02 01/25/16 (0)

RE: Pi filter resistors - Ralph 11:15:50 01/05/16 (0)

Follow Ups

RE: Pi filter resistors - Ralph 11:15:50 01/05/16 (0)

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