[ARC5] Power up Modulators

[fkamp at comcast.net]

David Stinson wrote:
> 
>  Correction:
> 
>> Use enough power supply to start the TX dynamotor without
>> grunting- 30 amps minimum, and that's if you have
>> some big "computer" capacitors on the output to
>> supply the starting surge, like a few hundred
>> microFarads.
> 
> 
> That should read "a few hundred THOUSAND microFarads."
> 
> If you want to really do it right, WallyWorld sells,
> in their automotive audio section, some humongous
> 1 Farad caps, good for about 20 volts.
> Two of them (for series connection)
> will set you back $150, but you'll never have to
> worry about starting a dynamotor again.
> You'll also have to figure a way to "soft start"
> them until charged- big resistor should do.
>


"a few hundred THOUSAND microFarads." !!!????

I guess I dont appreciate the problem.  Perhaps, if someone 
were to educate me on the need for this, I could be more 
appreciative.

The easiest way of attaining 'a few hundred THOUSAND 
microFarad' capability is to connect the dynamotor across a 
hot automobile battery.  500 plus cranking amps is going 
make that sucker spin like a top.

Regards,
Frank Kamp
K5DKZ