Coil Driver Circuit | Electronic Project Circuits

Posts Tagged ‘coil driver circuit’

8A Solinoid driver by Mosfet IRF150

This be 8A Solinoid coil driver circuit. Which use mosfet number IRF150 2 amounts, be important equipment , it performs to drive Solinoid coil. Which be valuable low resistance, use current the plentiful. By use the way encourages of input model PWM make use current , share lower, mosfet not very hot. Unless R16 still use fine but current adjust and R15 use fine decorate Release Adj as well .
(PWM duty cycle) D = Vout/Vin , want about 3V, D = 3/12 = 0.25 etc. , want about 9V, D = 9/12 = 0.75. The R16 take keep fine topmost trend has depend upon a kind of solenoid.
The R16 , can fine get from 4A trends arrive at 9A. The D1 help cover up something current flow turn back from solenoid coil. The C1 use increase efficiency of the circuit. The detail is other, please see in the circuit.

Be the first to comment - What do you think? Posted by admin - February 11, 2010 at 6:40 am

Categories: Electronic Control Tags: coil driver circuit, Mosfet IRF150, Solinoid driver circuit

Ignition coil driver by IC 555 + 2N3055

Here is a very simple circuit that will provide high voltage (15-40kV) sparks using a common ignition coil. The input is 12VDC at around 5 to 6 amps. Mine produces sparks that are about 3/4″ to 1″ in length. A 2N3055 NPN power transistor is pulsed with a square wave signal that comes from the 555 timer IC. The frequency of the pulses depends on the resistors between pins 7 and 8 and between pins 7 and 6. The pulse is also dependent on the capacitor. You can experiment with these values. Try inserting a smaller capacitor to raise the frequency. At different frequencies the sparks will change certain characteristics. At a high frequency the sparks will get fatter but shorter in length. At lower frequencies the spark maybe longer but thinner. I assembled my project on a solderless breadboard. You can use whatever you like. The capacitor should be a tantalum or mylar type, but this is not absolutely necessary. A ceramic type should work fine just as long as the temperature is not too high around it.

Source:http://www.geocities.com/CapeCanaveral/Lab/5322/coildrv.htm
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