Timed Relay (CB21866E)

We found this circuit in Ferranti's 1974 transistor manual. The components are from the period. Note the relay type used.

| Clique na imagem para ampliar |

741 Semilog Amplifier (CB25831E)
This circuit with the 741 operational amplifier was found in the March 1995 issue of Electronics Now...
Divider by 10 (CB6898E)
This circuit was found in a General Electric documentation from 1966. It uses discrete components...
Operational Pulse Generator 1 (CB14830E)
We found this circuit in a French technical documentation from 1982. The circuit can be...