Re: [T3] Voltage Drop Question

[John Jaranson <jaransonT3@comcast.net>]

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On Aug 1, 2004, at 9:21 PM, Jim Adney wrote:

> On 1 Aug 2004 at 22:02, John Jaranson wrote:
>
> > The wipers work if I hook 6V power to them direct without the voltage
> > drop in the system.  They also work (really fast) if I hook 12V to 
> > them
> > direct without the voltage drop.  Problem comes when I put the voltage
> > drop in the circuit between my power source and the wiring for the
> > wipers.  I get nothing.  I checked the voltage drop with my multimeter
> > and it has continuity across it.  It doesnt register any resistance.
> > Shouldn't it?  If so how much?  My multimeter resistance scale is in
> > 1000 of ohms.
>
> What are you using to drop the voltage? Resistor, BIG Zener diode, 
> Zener and
> power transistor, sophisticated switcher power converter?.....
>
> When you have the drop installed can you measure 6-7V at the power 
> input to the
> wipers? You should, or there's something wrong with your drop. If the 
> drop is
> just a resistor, then you will see 12-14V there when the wipers aren't 
> running.


OK, with the wiper switch off I see 12-14V on both side of the voltage 
drop.  With the wiper switch on I see 12-14V on the feed side of the 
voltage drop and 0V on the output side of the voltage drop.  This is 
just a BugPack Voltage Drop.  It looks like a small anodized, finned 
aluminum cylinder with a couple of mounting tabs sticking off it and an 
electric pin on either end.  The voltage drop does heat up when the 
wiper switch is on, but I get nothing on the output side.

Bad voltage drop?  I solder a couple of lengths of wire to the pins and 
then crimped on spade connectors to make all the connection.  Anything 
I could have done during that process to hurt the voltage drop?

Later,
John Jaranson
'66 Square (Sophy)
'71 Fasty (Jane - darkside project in waiting)
various parts.....don't we all.
http://mywebpages.comcast.net/jaransonT3/jaransonT3/
http://mywebpages.comcast.net/jaransonT3/2004Invasion/
http://mywebpages.comcast.net/jaransonT3/notavwclub/

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