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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Voltmeter without indicator (CB7348E)
Suggested by the General Electric Hobby Manual of 1965 this circuit measures voltages from 0 to...
Differential Amplifier (CB6546E)
This circuit was found in an American publication from 1968. The transistors are from the time,...
1.2 to 25 V x 3 A Variable Power Supply (CB1578E )
The source shown in the figure provides output voltages in the range of 1.2 to 25 V with currents up...