Standard 1 MHz Oscillator (CB9653E)

We found this circuit in an old American documentation. Transistors can be modern equivalents.

a Humidity Sensor (CB25721E)
When the probes of this circuit meet water, the relay closes its contacts. The circuit is from a May...
30 W Motor Control L200 (CB15146E)
We found this circuit in the 1982 SGS integrated circuit manual. The integrated circuit is not...
Transistor Amplifier - TIP31 / 32 (CB1004E)
This circuit consists of a traditional version amplifier with complementary output transistors...