Injectors in parallel & igntion signal processing

[James Ballenger]

Tony,

	Just be careful about your amperage draw, you don't want to overload the
circuit.  Keep in mind that a P&H injector that might normally be 6ohms in
parallel with another 6ohm injector will cause a 3ohm circuit and draw twice
as much amperage.  Though this may seem obvious to most, I have seen this
relationship ignored and drivers blown.  Otherwise, there shouldn't be any
problem.  My team has run Saturation and P&H injectors in parallel for many
years.

James Ballenger

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Tony Bryant
Sent: Tuesday, August 07, 2001 4:12 AM
To: diy_efi at diy-efi.org
Subject: Injectors in parallel & igntion signal processing


1 - Are there any pitfalls in driving peak & hold injectors in parallel?
(with a LM1949) My simulation looks alright, but am I missing anything
important

2 - What sort of circuit is recomended for processing of an ignition signal
(i.e. from the coil negative). Should I be looking for the HV spike, or try
to filter that out to get the base switched 12V?

Cheers.
Tony.


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