Half Wave Fast Rectifier (CB5160E)

This 80's circuit can be made with current comparators. Rectification accuracy is 1% DC up to 100 kHz.

Scale Expander for Multimeters (CB3912E)
The purpose of this circuit is to add millivolt scales to a common multimeter. Used transistors are...
LT123 Low Voltage Linear Regulator (CB4399E)
The circuit presented is from the 1993 Linear Technology Applications. The components used were...
Power Supply 6 - 9 - 12 V x 1 A - I (CB1178E)
In fact, the maximum output current of this source depends on the transformer which can be 6, 7.5, 9...