I built a circuit for ignition system using MOSFET, 555, ignition coil (specs unknown, but current rating is more than 2 A and less than 10 A), SMPS (12 V, 10 A for powering the the whole circuit.)
- First I built circuit-1 which has worked but only for a few seconds and temperature of the MOSFET is too high during operation.
- Second circuit-2 which is better than circuit-2 but works for 1 minute And still MOSFET is heating (slowly). I built the circuit-2 with reference to (arduino controlled spark plug with ignition coil) @MatsK
My question here is:
Why it is better than the first one and how to choose the RCD components which are connected in parallel with MOSFET in circuit-2?
And I powered the circuit form 12 V, 10 A SMPS and the SMPS is struggling to provide supply and I don't know why (LED in SMPS is flickering during operation)