I am designing a motor driver for 12vdc geared motor with mosfets. I need to amplify the digital output from microcontroller pic18f, tell me which transistors would be best. Moreover i need to know the working of mosfet drivers for driving the mo. Attached is the schematic in which i am using IRF530 & IRF9530 mosfets. I need to know if there is anything missing in the circuitry other than transistors.
Don't you need motor current measurement? You could accomplish that with a resistor.john_909 said:I need to know if there is anything missing in the circuitry other than transistors.
Could you please share those drain voltage values for each FET?john_909 said:I am getting correct output voltage from drains. The problem is when i connect the output to motor terminals, the voltage drops to zero.
Since no driving circuit is provided for the FETs and taking under consideration that a battery is used, a shorted motor is the obvious think to say.john_909 said:I am getting 12V on drains...
Thanks for replying and sorry for late replyI have designed the mosfet H-bridge motor driver using above diagram. I am getting correct output voltage from drains. The problem is when i connect the output to motor terminals, the voltage drops to zero. I am using 12V 4.5A battery and applying 6 volts 0.5A at gates. Can you help me with this?
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