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 |

MW Receiver ZN414 (CB4547E)
This circuit was obtained from an English magazine from 1985. The N414 is a complete, not easy to...
Touch Alarm (CB6450E)
Found on Popular Electronics from 1969, this circuit can be implemented with components that are...
Transformer coupled AF amplifier (CB21547E)
This circuit is from a book of transistors from 1954. The transistors are from the time and the...