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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40 to 60 MHz divider by 2, 3 and 4 (CB13730E)
This circuit is from an old American publication. It divides a 40 to 60 MHz TTL signal by integer...
TTL Optical Receiver For Data Link (CB918E)
The SN72741 integrated circuit is nothing more than the version of Texas Instruments of the known...
Two frequency oscillator (CB8059E)
Found elsewhere in this section, but from other sources, this circuit is from a 1964 Electronic...