Thursday, September 29, 2005

Regulators and Controllers

Note to self: forget the 7805, instead go for the pin-compatible LM2937 which only needs 5.5V input to provide a regulated 5.0V output up to 500mA. This actually would be nice if I ever rebuild Sycophant, because a lot of RC cars run on 6V, which isn't quite enough for a good 5V from a 7805.

Meanwhile I think I've found a nice H-Bridge circuit, I have to double check that the Saturn windshield wiper motor doesn't pull more than 4A from my 12V supply. I'll have a PIC microcontroller do PWM through it and have the motor go back and forth to move the arm for Blame.

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