[ARC5] Dynamotor Capacitor

[J. Forster]

Doesn't matter. If the Source is stiff (low impedance) there won't be
voltage spikes.

The caps are in case the source is NOT stiff, as I said.

-John

=================


> Gee, what a coincidence. The windings are inductive. Ever hear of "hash"?
>
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>
> -----Original Message-----
> From: J. Forster [mailto:jfor at quikus.com]
> Sent: Monday, March 24, 2014 10:16 PM
> To: Mike Feher
> Cc: 'Mark K3MSB'; 'ARC5'
> Subject: Re: [ARC5] Dynamotor Capacitor
>
> That only applies if the dyno is supplied by a source w/ considerable
> inductance, like a generator or a long length of wire.
>
> If the dyno is w/in a foot or two of a car batter or other low impedance
> supply, you don't see big spikes.
>
> -John
>
> ==================
>
>
>
>> The back EMF spike at every break of the brushes can have extremely
>> high voltage spikes. 73 - Mike
>>
>> Mike B. Feher, N4FS
>> 89 Arnold Blvd.
>> Howell, NJ, 07731
>> 732-886-5960
>>
>>
>> -----Original Message-----
>> From: arc5-bounces at mailman.qth.net
>> [mailto:arc5-bounces at mailman.qth.net]
>> On
>> Behalf Of Mark K3MSB
>> Sent: Monday, March 24, 2014 9:35 PM
>> To: ARC5
>> Subject: [ARC5] Dynamotor Capacitor
>>
>> I just finished a complete rebuild of the dynamotor for my BC-456.
>>
>> I'm curious why the  0.006 uF shunt capacitor across the 28V side is a
>> 2KV cap.  That seems awfully high.
>>
>> 73 Mark K3MSB
>>
>> Sent from my Android phone
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