Instrumentation Amplifier (CB7825E)

Suggested by National Semiconductor, this circuit can be applied to almost any operational amplifier. The input resistance is extremely high.

| Clique na imagem para ampliar |

Complete Timer (CB18775E)
This circuit has an LED indication of the timing progress, having been found in an old...
Infrared Vision (CB24310E)
This circuit is from a Radio Electronics magazine from August 1974. It used one of the first...
Nicad Automotive Charger (CB9538E)
This charger is powered by the car's 12 V socket, the number of diodes being calculated according to...