A buck-mode converter for a stable output
voltage and/or current from an unstable
or variable input. Preliminary.
A brief introduction to using a H-Bidge IC and a PIC microcontroller to control the speed of a DC motor.
The PIC 16F62X series is a pin-compatible upgrade to the old F84. There are no analogue to digital converters (ADC) as such but it is a simple job to use a comparator, a timer and a few lines of software to make one.