[GreenKeys] Lorenz Lo-15c

Jeffrey Angus jdangus at att.net
Mon Sep 21 05:59:07 EDT 2020


On 9/18/20 5:28 PM, Jeffrey Angus wrote:
> On 9/17/20 4:07 PM, Jeffrey Angus wrote:
>> So, of course, the next time I turned it on, the motor just
>> hummed and didn't spin up.
>>
>> At first, I thought it was the main shaft seized up.
> I found the problem. 
A design error on my part with the dual speed motor controller
I designed.
I put a 1/16th amp fuse in the primary of the supply.
Adequate for running, but too small to deal with the initial surge
current of the +Vcc filter capacitors.
I replaced the bad fuse with a 1/4 amp.
Everyone happy now.


-- 
"I am a river to my people."
Jeff-1.0
WA6FWI
www.foxsmercantile.com

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