i`m think it`s a signal inversion for msd trigger adapter.
msd trigger adapter for toyotas and hondas.
Re: msd trigger adapter for toyotas and hondas.
This is in fact not an inverter, more likely a level converter or simply a current amplifier as the MSD has a rather strong pullup on the white wire, intended for use with points.
Re: msd trigger adapter for toyotas and hondas.
Fairly typical darlington pair current amplifier isn't it? :-)
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Re: msd trigger adapter for toyotas and hondas.
I'm curious how many have been slapped because they were looking under the hood (or bonnet) of thier significant others, and blurted out "nice darlington pair"
Re: msd trigger adapter for toyotas and hondas.
hmm... soon i`m get a 2 ch osscilogaph and try check how honda ecu use igniter unit. i`know what stock igniter unit control dwell and give a feedback to ecu (because ecu knows shoot spark or not).
Re: msd trigger adapter for toyotas and hondas.
ECU drags that voltage down to 0V to send the signal for coil charging.
good. soon i`m made some mod for my prelude ecu
good. soon i`m made some mod for my prelude ecu
Re: msd trigger adapter for toyotas and hondas.
Not so, a darlington pair uses one transistor to amplify the base current of the other in a common collector connection. This circuit is two inverting (common emitter) amplifiers in series.Fred wrote:Fairly typical darlington pair current amplifier isn't it?
Re: msd trigger adapter for toyotas and hondas.
red line first cyl sensor. blue-ignition output signal. it`s uses npn transistor for signal output.