On May 29, 2006, at 3:45 PM, Jeff Strailey wrote:
> Thanks to everyone who replied privately and to the group. The
> soft start module in my LK500ZB doesn't resemble the Harbach module
> in any way. There were also other wiring changes that defy common
> sense like bringing the AC directly to the power switch and then
> the line fuses rather than the opposite which one would expect. Me
> thinks I'm gonna deep six the mystery soft start module and return
> the AC input path to factory configuration. Next step will be to
> buy the Harbach board and appropriate resistors for 120 volt
> operation.
The circuit at:
http://www.somis.org/D_a_01.jpg
is simple, does the job, and you probably already have the parts for it.
If you want to do a circuit improvement, use the stock T/R relay
for step-start, add the high-speed switching modification and lessen
your chance of having a squirrel visitation.
http://www.somis.org/D-a-07B.jpg
Other circuit improvements would be a lower-Q VHF suppressor and
removing the "neutralization" circuit, if it has one.
> My ears aren't deaf to those who said 220v only for the amp but it
> just isn't practical in this shack.
If you own the abode, plus you have 600v-rated 3-wire romex feeding
a 120v outlet in the room, and you have an open slot in your circuit
breaker box, adding a double-breaker with a 240v outlet is
electrically do-able without pulling more wire.
> I will very seldom use the amplifier, and every last watt isn't
> really that important. Again many thanks to the members who've
> attemted to help me with this problem
>
> 73,
>
> Jeff K6TLA
>
>
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R L MEASURES, AG6K. 805-386-3734
r@somis.org
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