CDI = - is that correct for your motorcycle? Are you trying to fix the CDI system, or to replace it with an inductive-type spark generator?
I doubt that three of the 2N7000's in parallel would have enough current-handling capacity to produce a good spark. I also no longer have the details of that project, but there was some discussion. Apby mrobbins (NerdKits Staff) Hi huzbum, Welcome to the forums! We used a inductive spark generator. Should be some interesting programming once I get the circuitry figured out. I have spares of everything, but I don't need coil feedback killing stuff.
I am going to be building a replacement for the CDI module on my old motor cycle (parts no longer available), and I am wondering if 3 parallel mosfets from the kit should be able to safely drive a 12v ignition coil, and what sort of circuit protection would be best. A broken power or ground wire or a failed coil driver can all cause the same symptom and the.Īpby huzbum I have not even opened my kit yet (it came today) but I would like to get started on the coil driver circuit design so I can order parts if I need to. Coil-on-Plug Ignition: The Art of COP Misfire Diagnosis Posted on. Voltages in the 200Volt range are more common for lower end systems) some 500 times a second when the engine is running fast.Just a simple ignition coil driver i was playing with powered by a dimmer switch a a capacitor and 2 ignition coil.
In a car engine the coil may be pulsed by up to 312 volts (for high performance ignition systems. When this current is removed, the field collapses and induces a current on the secondary coil, which consists of several tens of thousands of hair thin wire This induced current appears as a high voltage pulse (a product of the ratio of turns between primary and secondary and of the field's rise time), which in engines is used to fire the spark plug and ignite the air/fuel mixture inside the combustion chamber. When a current is pulsed into the primary winding (which consists of a couple hundred turns of relatively thick wire), it sets up a magnetic field around it and the coil's core. Introduction: Car Ignition coils (there are other kinds, such as motorcycle and boat coils, but the ones made for automotive engines are the largest) consist of two windings: A primary and a secondary, wrapped around a core (usually multi layered silicone steel) and encapsulated in some insulating material (epoxy or oil are normally used).
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