What kind of transistor can be used in a ignition coil?
Pretty much any power transistor, IGBT or MOSFET can be used in this circuit as long as it is rated for at last 5A and 100V. Ones with higher voltage ratings will be less likely to be damaged by spikes. Further protection methods are outlined lower down this page and in the comments.
How do you convert AC voltage to DC voltage?
Divide the AC voltage by the square root of 2 to find the DC voltage. Since an AC power supply sends voltage in alternating waves, DC voltage will be lower once you convert it. Write out the formula V AC /√ (2) and replace V AC with the AC voltage you found with your multimeter.
How do you connect an AC transformer to a DC power source?
Connect the red and black wires on the transformer to an AC power source. The transformer will have a red wire and black wire that attach to a power source and provide a current through the circuit.
What happens when the transistor on a generator switches off?
As soon as the magnet inside rotor “C” moves away from the coils, the transistor switches off, restoring its collector voltage in a short time close to the +12 Volt supply line. This depletes coil “2” of current. Because of the manner the coils are positioned, it pulls the collector voltage upwards to around 200 volts and above.
When to use a relay instead of a transistor?
When to use a relay: Transistor vs. Relay A relay is an electromechanical device and its mechanical contacts are capable of switching high currents and voltages. Whilst a transistor switches only DC loads, a relay switches AC and DC loads. A relay may have many contacts, such as double changeover poles to implement complex logic.
What do you call a dissipative ignition coil driver?
These diagrams represent a few possible ways you can snub EMI in an ignition coil driver. These are known as dissipative snubbers because the excess energy is disspated as heat or light. The top digram uses a series connected capacitor and resistor. The values used will depend on your drive frequency.