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Old 01-22-2009, 10:06 PM   #11 (permalink)
dcb
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Ok, it looks just like waveform Y in figure 2, here:
http://www.tomco-inc.com/Tech_Tips/ttt38.pdf

that lists it as 14 and 11 volts, not 5. Hmm.

If it were 14 volts then a 20k resistor in parallel with the zener should just about do it.

If it's really 4 volts and 5 volts, then maybe a 120k resistor in parallel with the zener would work.

(assuming standard zener and 100k resistor on injector lead)

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