Operational amplifier with single power source 1 (CB21111E)

This inverter circuit was found in a Radio Electronics. It shows the basic configuration of a single source operational amplifier.

| Clique na imagem para ampliar |

Schmitt trigger 40106 (CB21565E)
The CMOS PLL used on this circuit is not very common. The circuit can be used to take out contact...
Humidity Sensor (CB10466E)
I found this circuit in an English magazine from 1977, but the circuit can be easily assembled by the...
Old 8 W Amplifier (CB18436E)
This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The...