- Thu Apr 14, 2022 10:42 pm
#56496
one for the circuit guru's
I'm making an MR2 PNP board so to work out the issue with the 4wire dizzy with the max VR being used i sketched out the 3 pickup circuits the OEM board uses, any issues replacing the 1N4782 (8.5v 1.0mA) with a same/higher mA 4.7v zener so i can stick the signal into the arduino through another 470r/1k resistor after the diode and last cap?
setting the dizzy up tomorrow on the bench and scoping the signals to see how this all works but i figured someone's looked into this to make the honda/toyota specific VR conditioner.
the passthrough caps are all 2.2nF 100v just forgot to lable them.
Regards
Richard
I'm making an MR2 PNP board so to work out the issue with the 4wire dizzy with the max VR being used i sketched out the 3 pickup circuits the OEM board uses, any issues replacing the 1N4782 (8.5v 1.0mA) with a same/higher mA 4.7v zener so i can stick the signal into the arduino through another 470r/1k resistor after the diode and last cap?
setting the dizzy up tomorrow on the bench and scoping the signals to see how this all works but i figured someone's looked into this to make the honda/toyota specific VR conditioner.
the passthrough caps are all 2.2nF 100v just forgot to lable them.
Regards
Richard
Attachments
Toyota mr2 3S-G circuit.PNG (41.5 KiB) Viewed 5373 times