Diode Tester (CB22137E)

This diode tester was found in an English publication from the 1980s. Transistors are general-purpose types of the time.

LED display with ICL7107 (CB15353E)
This is the basic configuration of a 4 and-a-half-digit display with LEDs already containing the...
1.3 V Regulator (CB25901E)
This circuit is based on the voltage drop of the diodes in conduction, in the order of 1.6 to 1.7...
48 V Fast Current Sensor (CB5242E)
For -48 V voltages, this fast sensor was found in a 2005 Linear Technology application manual. The...