Need some suggestion ignition coil pulse detection

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  1. - 28th April 2009, 01:41 #4
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    mistergh
    mistergh is offline Junior Member
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    Smile Interface Ignition Coil to PIC etc

    Here is what you need to do:

    From the low end of the ignition coil to the anode side of a diode 1N4002, then to Resistor 8.2K then to Resistor 3.9K, then to Basis of a NPN Transistor. A capacitor of 68nF between 8.2K and 3.9K Resistor to ground. A Resistor of 3.9k from Collector to +5Volt, Emitter to Ground. Signal from the Collector to your Circuit.

    Code:
    Coil----Diode-----Resistor 8.2K------Resistor 3.9k-------| Base Transistor
                                  |                  |
                                  |                  |
                                 Cap 68nF          Resistor
                                  |                 3.9k
                                  |                  |
                                 Gnd                Gnd
    Hope this helps.
    Last edited by Darrel Taylor; - 28th April 2009 at 01:59. Reason: Added [code] tags
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