FET Constant Current Source (CB6622E)

We found this circuit in a 1968 US documentation. The power FET is a component of the time and the current is 4.5 mA only.

| Clique na imagem para ampliar |

Current limiter (CB8355E)
This circuit was found in a 1965 Electronic Design. Transistor Q2 must be load dependent. The circuit...
Baxandall tone control (CB9372E)
Found in RCA documentation from the 90s, this bass and treble control uses an operational...
Magnetic Sensor Amplifier (CB6494E)
This circuit was obtained from a Philips documentation from 1970. It can be built on modern...