Instrumentation Rectifier (CB19750E)

This circuit can make use of almost any operational amplifier and the diodes are for general use. It is intended to excite an analog instrument.

| Clique na imagem para ampliar |

Rocket Altimeter (CB25357E)
Today we have more compact solutions. This is from a Radio Electronics magazine from October 1990....
Band rejector active filter (CB7405E)
This filter was found in Texas Instruments documentation from the 1980s. The circuit uses a common...
Transistor test (CB22545E)
16 commercial test circuit for tubes and transistors appeared in Radio Electronics magazine in...