Source for LASER (CB7843E)

This power supply for gas laser (HeNe) was found in a 90’s Popular Electronics. It generates from 1300 to 1500 V using common components.

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PUT 40 Hz to 40 kHz oscillator (CB8288E)
Found in Unitrode documentation from the 1980s, this circuit makes use of PUTs, currently common...
DC motor proportional control (CB7283E)
This bidirectional motor control was found in an 80's Electronic Engineering. The circuit uses a...
Stable with Active Cycle Adjustment (CB14064E)
We found this circuit in the 1972 RCA Linear Integrated Circuits Manual. The circuit can generate...