In SX Microcontrollers, SX/B Compiler and SX-Key Tool, capdiamont wrote:

I built a h bridge circuit, using the formula on the h bridge and prop topic. However it doesn't seem to have enough power. The motor is from a ink jet printer, and I measured .2 amps at 12vDC

The main transistors are capable of 2-3 amps. 

I figured 7.5 ohm for r1/r2 used 7 ohm(used 5 resistors in series, and measured it)

I figured 95 ohm for r3/r4 used 100 ohm. I used 5v since it was coming from the SX.

Running straight from the power supply, the motor runs fine at 5v, or 12v. So I think I don't have something quite right.

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