This SCR relaxation oscillator was found in an 80's Electronic Design. It flashes a small incandescent lamp in frequency that depends on the capacitor.
This circuit was found in an Electronic Design from the 90s. The integrated circuit is from that...
This relay driver or shield was found in a 1960 Sylvania transistor manual. The circuit is for...
We found this circuit in an old American manual. The formulas allow the gain to be calculated as a...