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.

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15 V x 100 mA Voltage Regulator (CB1510E )
We found this circuit in an integrated circuit cookbook from 1974. The circuit can provide larger...
Variable Reluctance Pickup Preamplifier (CB941E)
This circuit was fond in an old publication of the years 1950. The transistors are germanium types and...
High Impedance Differential Amplifier LM324 (CB4003E)
This circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other...