[urq] Electrical Experts - Question re. Capacitor installation

[Grant Lenahan]

Yep

LL - NY wrote:
> A cap installed in a series in a DC circuit will not pass
> current until the circuit is actually shut down. It MUST
> be wired in parallel to be used as a part of a filter system
> for a DC power source.  Choke Coils, OTOH should be
> installed in-line (series).
>
> The idea for both devices is to make the DC that goes
> to the head unit (or amp) more DC like, as they act as
> dampers to voltage (and by I = V/R) and current fluctuations.
>
> That being said, when we broke down one of our Magnetizers
> at work, I took a HUGE (as in 1.2 Farad) cap from the machine
> to use as a filter on my 4KQ's rear amp. It was meant for
> huge currents (around 200 Amps) at voltages well above
> automotive use (120V). Net filtering effect. Virtually nothing.
>
> YMMV,
>
> LL - NY
>
> On 10/31/07, Ben Swann <benswann at verizon.net> wrote:
>   
>> I found this article to be helpful and shows the concept I was referring
>> to:
>>
>> http://www.bcae1.com/capacitr.htm#demo
>>
>> It looks like installing in parallel is OK, just need to be careful about
>> initial
>> charging and discharging.
>>
>> Ben
>>
>> _____________________________________________
>> From: Ben Swann [mailto:benswann at verizon.net]
>> Sent: Wednesday, October 31, 2007 8:24 AM
>> To: quattro at audifans.com; 'URQ'
>> Cc: 'Ben Swann'
>> Subject: Electrical Experts - Question re. Capacitor installation
>>
>> Something new to my realm of expertise.
>>
>> I would like to install an electrolytic capacitor to act as a buffer for
>> an ignition
>> system - sort of like placing a second battery up close to the
>> load..  Since the
>> distance of the battery to the coil is about 7-8' and my understanding
>> that a circuit
>> may lag,  it seems installing a large capacitor might be a good idea.   If
>> so, it makes
>> sense that I'd install it in parallel with respect to feed wire and
>> ground, however
>> diagrams for most stereo AMP installations show the cap to be inline, with
>> no other
>> current path to the amp.
>>
>> Is it OK to install an electrolytic cap. as sort of a buffer or quick
>> discharge
>> batteryin parallel with the circuit?  That is basically to connect the
>> positive end to
>> battery post near load and ground as normal, leaving the original positive
>> feed path
>> intact.  I have some 1 and 2 Farad caps  and this is mainly to prevent lag
>> at high RPM,
>> similar to stereo clipping at high volume.
>>
>> Good Idea or ???  I'm doing some searches, but not finding a solid answer.
>>
>> TIA
>>
>> Ben
>>
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