[TenTec] paralleling power supplies to run Herc II

[Ray Sills]

My understanding of those big capacitor units is to permit the  
operation of the typical 100 watt SSB mobile rig when it's powered  
from the "quick and easy" power connection port: the cigarette  
lighter socket.  That port should be good for about 10A, but if you  
add the mega-capacitor, you can source 20A or more for short  
intervals.. which works fine for SSB, or even CW.

And I agree.. a hefty battery is all you need, with hefty wiring.   
The booster will let you transmit with full power, but at the cost of  
depleting the charge in the battery more quickly.  The booster will  
keep the output voltage constant as the battery voltage sags.  As  
always, there's no free lunch in the physics department.

73 de Ray
K2ULR

On Jun 21, 2011, at 11:40 AM, Jim Brown wrote:

> On 6/21/2011 7:09 AM, Carl Winkles wrote:
>> I have used one of those capacitors for Field Day using a 100 watt  
>> rig and a battery with a battery booster. It seems to work  
>> although I don't know how to test it
>
> The battery makes the capacitor un-necessary as long as the leads
> between the battery and the rig are short and fat  -- the battery  
> itself
> acts as a big capacitor. The capacitor could improve things ONLY if it
> were connected with near zero-length leads to the DC terminals of the
> rig, and even then the benefit would be QUITE minimal.
>
> Ohm's Law is a wonderful thing -- big, short copper is your friend,  
> and
> a LOT cheaper than exotic capacitors.
>
> 73, Jim K9YC
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