Constant current source (CB8697E)

This circuit was found in a 1968s European documentation. It is a current regulator using complementary general-purpose transistors.

| Clique na imagem para ampliar |

Step-adjusted power supply (CB8895E)
This 1.5 A circuit has the output voltages adjusted by a selector switch. We found it in a Popular...
Voltage multiplier 2 (CB9438E)
We found this circuit in an EDN from the 90s. The circuit is a voltage quadruplicator using...
Ultrasonic Doppler Receiver (CB8732E)
This is the receiver for the previous circuit, also found in 90s Radio Electronics. The circuit...