RE: Test points

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RE: Test points

Posted by mwhouston (S) on July 25, 2012 at 06:33:17

In Reply to: Test points posted by 1973shovel on July 24, 2012 at 17:29:17:

Yes probably test point jacks is a better name. There is a 1ohm resistor in the cathode leg of the 6C33C. These test points are wired across the 1ohm resistor. By adjust a 25 turn trim pot the voltage (which is about 0.2V or 200mV) across this resistor varies as the 6C33C passes more or less current due to changes in bias.

The current changes are reflected directly across the cathode resistor (as voltage changes) and can be read off a inexpensive meter from the test jacks.
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Follow Ups Full Thread

Topic - 6C33C amp - mwhouston 14:45:44 07/24/12 (14)

Wouldn't it be good to make sure. . . - John PA 18:01:42 07/30/12 (1)

RE: Wouldn't it be good to make sure. . . - mwhouston 23:07:25 07/30/12 (0)

RE: 6C33C amp - amnesiac 00:17:48 07/25/12 (1)

RE: 6C33C amp - mwhouston 06:20:26 07/25/12 (0)

The little test holes for biasing, what are those called? - Paully 17:13:04 07/24/12 (6)

RE: The little test holes for biasing, what are those called? - mwhouston 01:52:19 07/25/12 (0)

Test points - 1973shovel 17:29:17 07/24/12 (4)

RE: Test points - mwhouston 06:33:17 07/25/12 (1)

I simply called them what Mouser and DigiKey list them under - 1973shovel 13:19:18 07/26/12 (0)

Perfect! - Paully 18:48:52 07/24/12 (1)

You're very welcome! (nt) - 1973shovel 09:14:40 07/26/12 (0)

RE: 6C33C amp - mwhouston 15:07:34 07/24/12 (1)

Go, Don!!! - gortnipper 03:05:41 07/26/12 (0)

Don? nt - Fried89 14:54:41 07/24/12 (0)

Follow Ups

RE: Test points - mwhouston 06:33:17 07/25/12 (1)

I simply called them what Mouser and DigiKey list them under - 1973shovel 13:19:18 07/26/12 (0)

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