[Amps] Strange power supply

[R at contesting.com]

Cats make a noise c. 6Hz.

On Apr 19, 2006, at 6:31 PM, k7fm wrote:

>> I recently boxed-in my all-purpose power supply with thin panels of 
>> wood,
>> in order to protect the cats...
>> Just prior to the box-in, I ran my 8877 6M amp at 4200 volts idle, 
>> and 3800
>> volts at 1 amp load with no problems.
>> Under a 1 amp load I'm also hearing a (60 cycle?) loud hum.
>
>
> Are you missing any cats?
>
> Colin  K7FM
>
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Rich Measures, 805.386.3734, AG6K, www.somis.org