>Advice being sought from the 'experts'.....
>
>I have an Amp Supply LK-800C which uses three 3CX800A7's in grounded
>grid configuration. Plate voltage usually hovers around 2400 and I
>guess it is theoretically capable of being loaded to 1800ma plate current,
>though I've never been able to quite achieve that...I really prefer to
>have it 'loaf' a little.
Warning: I am not an expert.
- The key-down rating of the 3cx800a7 is 600mA per each. 1800mA
key-down should be no-prob at all if you have a free supply of bottles.
>
>Question is -- what is the best value and location for a good B+ glitch
>resistor?
I would use a pair of 10 ohm, 10w wire-wound glass-coated resistors in
series. For RTTY broadcasting, 15 watters would be appropriate.
>It's a bit compact around the plate choke/tube area...I was
>considering putting the resistor in the remote supply in the HV AC lead to
>the rectifier diodes...but then I figured that would not help with the
>charge dump from the filter caps. So, I assume that putting the resistor
>right at the HV DC output (after the filter caps) would probably be the
>best spot...is there any problem having this resistor down in the remote
>supply rather than right up in the RF deck area ??
Not at all. In a series circuit, it matters not.
Is this amplifier "neutralized"?
..
Rich---
R. L. Measures, 805-386-3734, AG6K
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