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Recent content by Anirban Raha

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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    Will this circuit work? Do i need to use any resistors to limit the gate source current due to the pwm signal? The pwm signal is output from the 8051...
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    Will this do? - https://www.adafruit.com/products/355. And also do I need a MOSFET driver? Or will it be sufficient just to replace the transistor with a MOSFET in the chopper circuit that you have suggested?
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    Ok...looks pretty simple...except that I don't understand where I should apply the PWM signal in the given circuit(referring to the link that you have suggested)...And could you also suggest what transistors would be suitable for this circuit keeping in mind that it will be handling 15A of...
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    Please could you explain how I can use a DC Chopper to control the speed of a single motor in one direction with a circuit?
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    The H-bridge shown below has a rating of 10A current. Will this work? Can the same circuit be used for 20A by using transistors of higher current rating? And also are there any other kind of modifications required if I use this circuit to drive the 15A motor?
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    I am generating the PWM signal using a 8051 microprocessor...And yes i guess i will need a power supply...nd yes I am also aware that the size of the circuit would be somewhat between that of an asteroid and an atom...what i meant by other things are heat-sinks and other such devices to keep the...
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    Thnx for replying...that means i need to make 4 seperate h bridges to control 4 motors? Nd also could you tell me what other things i would need for this circuit...? for e.g. a heatsink etc. due to the high current rating? Nd also would the circuit be small or a massive one? P.S. i really don't...
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    High current H-brigde for 12v, 40000 rpm, 15A(with load) DC Motor

    Hi all, I want to control the speed of a DC motor(40000 rpm, 12V) that is taking about 15A of current when loaded. To generate PWM signals, i am using a 8051 micro-controller(AT89s52). However i am really having trouble finding a H-bridge driver IC(like L293d or l298 etc) because the current...
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