Bill,
I used to have a Warrior Amp. If I remember correctly, you had to apply
"POSITIVE" bias to the grids when in receiving mode. This cut down on noise
being induced into the receiver. The resting current is just that. When the
HV switch is "thrown", your Ip should show "approximately 100ma with "NO"
signal or drive applied.
I hope I'm understanding your problem correctly. If not, please
disregard!
Mike
W3SLK
-----Original Message-----
From: Bill Smith <shadow1@jnlk.com>
To: amps@contesting.com <amps@contesting.com>
To: <amps@contesting.com>
Date: Friday, November 05, 1999 4:46 PM
Subject: [AMPS] Heath HA-10 Grid Bias and Resting Plate Current
>
>I'm confused. I've installed a Negative Bias supply in the amp and am
>supplying about -100vdc to the 811A grids. The plate current as indicated
>on the meter is still 100ma. If I remove the negative bias from the
>grids(ground it out) the plate current increases to about 120ma. The
>manual says the "Resting Plate Current" is supposed to be 100ma. In the
>troubleshooting section of the manual one cause of improper resting plate
>current was noted as not grounding the bias terminal on the rear apron,
>effectively removing the negative bias. I did this and the plate current
>went up to 120 ma from 100ma. My question is: Is the HV inducing the
>resting plate current and can not be removed by apply a negative bias to
>the grid? I'm learning the hard way, trial and error.
>73,
>Bill KO4NR
>
>
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