On 6 Nov 97 08:35:00 -0600 wstrahl@nwsca.nw.lucent.com writes:
>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.
>
>Question is -- what is the best value and location for a good B+
>glitch
>resistor? It's a bit compact around the plate choke/tube area.
The LK-800A ( I dont know about the C version) already has a resistor
mounted on the center partition on the RF side. It however is a poor
value. Replace with a 10-15 Ohm 20-25W enamelled wirewound. Keeping it on
the RF side adds a bit of extra help for any RF that gets past the plate
choke. You may even wish to bypass it with 1000pf or so.
73 Carl KM1H
..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 ??
>
>Question 2 -- Best value/wattage for this resistor ??? and what type
>??
>wire wound OK ?? Some smaller values in series to spread voltage drop
>over multiple resistors ?? All helpful comments appreciated !!
>Thanks!
>
>Wayne - W9II wstrahl@nwsca.nw.lucent.com
>
>
>
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