If your voltage is dropping, I'd suspect the wiring or something else.
If the power supply is dropping, there is something wrong. Check it
under normal load, and it shouldn't change.
73
Butch
WA0VJR
On Fri, 3 Jun 2011, Lou Kolb
wrote:
> Thanks Steve. Yes, it's a linear supply although I've never had occasion to
> look inside of it. Occasionally, the K3 shuts down when I key it so I need
> to check for voltage drop and then see if it needs adjusted. At least it
> should be a fairly straight-forward problem to deal with and I do have one
> of the old rad shack talking multi meters. 73, Lou -- WA3MIX
> ----- Original Message -----
> From: "Steve Forst" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, June 02, 2011 10:31 PM
> Subject: Re: astron supplies
>
>
>> Hi Lou,
>>
>> I assume you are talking about one of the transformer types, and not one
>> of the switchers. If that is the case, the answer is yes. Remove the
>> cover, on the right hand side of the supply ( looking from the front) is
>> a small circuit board. It is right above the big filter cap. The
>> soldered side of the board is facing up and components are down. The
>> variable component you adjust is on that board. It isn't a knob, more
>> like a little thumb wheel. It's very touchy, sighted help in watching a
>> meter will help, but I've done it myself with the talking multi meter
>> and some trial and error.
>>
>> 73, Steve KW3A
>> On 6/2/2011 10:07 PM, Lou Kolb wrote:
>>> Anyone know if there is a voltage adjustment inside the Astron power
>>> supplies? I have a 35 amp supply that may need some tweaking. Thanks.
>>> Lou
>>>
>
>
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