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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Dial monitor (CB5999E)
We found this circuit in an American 1980s documentation. The circuit uses a piezoelectric transducer...
TTL Oscillator 7404 (CB25016E)
We found this circuit in December 1986, Radio Electronics magazine. It uses 3 inverters and has...
LT1190 Fast Pulse Detector (CB14615E)
This circuit is from 1997 Linear Technology Applications. The circuit uses common components at...