Author Topic: amp biasing  (Read 3349 times)

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Offline youDEVILyou

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amp biasing
« on: March 25, 2003, 04:16:21 pm »
ok
so i got my new euro tubes in.

i have an " auto range digital multimeter"
i set it on V~ and it reads .000 V
im trying to bias a FMIC model t

i put the black prong the ground i assume.
into the ground port. i put the red prong into the v7v9 port and i get a reading of .001 no matter how i adjust the bias screw it stays at .001 V
if i take the ground out i get a reading between .045-.065 V

and when i move the set upover one space black in v7v8 red in v9v10 i get a reading of .001 or .002 V

i cnat afford to take it to a tech. so i really need the help
thanks
gavin

Offline youDEVILyou

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amp biasing
« Reply #1 on: March 25, 2003, 04:22:41 pm »
p dot s

i also set the meter to A~ and it went .001 Ma

and same results.

no go

Offline youDEVILyou

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« Reply #2 on: March 25, 2003, 05:44:20 pm »
also also.

instant message me if you so desire

sahtoothgrin

thanks

Offline youDEVILyou

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« Reply #3 on: March 26, 2003, 11:01:38 pm »
please

Offline Rocketboy

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amp biasing
« Reply #4 on: April 02, 2003, 09:47:42 pm »
Try reading volts DC (VDC).
Heads up, everybody!

Offline youDEVILyou

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« Reply #5 on: April 02, 2003, 11:08:04 pm »
i done did that