For experiments with a disk rotating at various speeds, the April 1998 Electronics Now magazine suggests this PWM motor control. The current with the LM317 is 1.5A maximum.
Found in American documentation, this amplifier stage has unit gain and a high input impedance. It...
This simple oscillator generates a 455 kHz signal. The circuit is from an 80's documentation and its...
It can be obtained from Mouser Electronics the new MAX14871 Maxim consisting of a full-wave...