need help with power inverter

[sudipmuk]

Hi
I know about steering circuits and i can make one myself too . But i was telling about these PCB s that they do not have a steering circuits. The four waves needed for the H Bridge is coming from 16F72 . And they have used RC2, RC3, RC5 and RC6.
Any idea how they are doing it without steering circuits ?

Sudip

[sougata]

Hi All,

A compare module can generate software PWM effectively with low ins.cyl overhead. The stearing is all done in software.


You turn on the pin (according to the steer logic) and with compare interrupt turn off all the outputs. Comapre value comes in from the PID. Turning off the outputs in the ISR and turning them on (sterring) gives you the dead-time automatically. It is not that complicated.

Sorry can't share the code. (Mostly ASM)