[Healeys] pertronix

Bob Spidell bspidell at comcast.net
Sat Feb 14 16:31:58 MST 2009


Ron,

Since the Pertronix unit is solid-state it likely has diodes, capacitors 
and transistors that cannot be reverse-biased (the main part of the 
circuit is probably a power transistor that is switched by Hall Effect 
from the magnets in the rotor--like solid-state SU fuel pumps). If 
Pertronix could make a dual-polarity (bipolar ;) unit--like some SU fuel 
pumps that use non-electrolytic capacitors (points don't care about 
polarity)--they probably would because they could design, build, stock 
and support fewer products for the same number of sales. I believe we've 
heard from at least one Lister who installed a Pertronix 'backwards' and 
the unit was fried instantly.

Don't 'toss' your pos. ground unit--I'd be glad to take it off your hands.


Bob



Ron Davies wrote:
> Does anyone know if the pertronix electronic ignition for a BJ8 in Positive
> ground can be changed to a negative system or does it need to be tossed and
> replaced?
> TIA
>
> Ron Davies
>
>
>   


-- 
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Bob Spidell           San Jose, CA            bspidell at comcast.net

Failure is the opportunity to begin again more intelligently. - 
Henry Ford
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