Memory Recorder (CB6789E)

This Harris circuit from the 90's is intended for recording old EPROM memories. The circuit uses components of the time.

Variable Power Supply for the Experimenter (CB16079E)
The power supply shown in the figure provides voltages between 0 and approximately 15 volts, with...
Ring Oscillator 4011 (CB24865E)
Another triggered oscillator that we found in the November 1984 Radio Electronics magazine. The...
Battery Tester (CB6517E)
Found in a 1980s German publication, this circuit tests batteries by type. The circuit is based on a...