Voltage Follower TL081 (CB15308E)

This conventional circuit is from Motorola's 1993 Linear Interface ICs. The power source must be symmetrical.

Bidirectional Optical Coupler (CB16923E)
This shield can be controlled by positive or negative voltages of the sensor acting as a...
Power Supply from 0 to 24 V x 1 A (CB1194E)
We found this circuit in a 1979 French publication, but it can still be assembled today with...
CMOS Digital Frequency Meter (CB4646E)
This simple digital frequency meter using CMOS circuits reaches 5 MHz frequency. Input signals are...