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The actual problem is that the solenoid's winding become hot and after sometime would get burned.Use the solenoid designed for the job. Starter motors if the direct drive can draw up to 400 amps at start depending on the load.
No, that will never turn off.
This will work better. R1 1k, R2 1k D1 1N4001, Q1 & Q2 2N3904
So what do you think will happen to a 50A mosfet then?The actual problem is that the solenoid's winding become hot and after sometime would get burned.
Would you please be kind enough to explain why it won't turn off, though the simulation is doing it perfectly.
Your suggested schematic would switch on the mosfet when there is no control voltage on the base of Q2.
*Poof*So what do you think will happen to a 50A mosfet then?
Got it, thanks.The simulation shows it turning on, not off. There is no path to ground to discharge the gate.
Also, you're using the transistor as an emitter follower, which is not ideal.
You can use another transistor to invert the input. It may be easier to use a proper gate driver.
The solenoid's winding doesn't get burned because of the 50A+ current! That current is extracted by the starter thru the solenoid's contact terminals.So what do you think will happen to a 50A mosfet then?
In my circuit (after improving as per Steve's suggestion) if I use a 100A mosfet, wouldn't it do the job?
In my circuit (after improving as per Steve's suggestion) if I use a 100A mosfet, wouldn't it do the job?
In my circuit (after improving as per Steve's suggestion) if I use a 100A mosfet, wouldn't it do the job?
This preserves the logic polarity of the original design