Neon Voltmeter (CB13643E)

This circuit was found in a 1974 publication. It consists of a voltmeter for high voltages, up to more than 100 V, using a neon lamp.

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Physiotherapy Ultrasound (CB18760E)
This circuit was found in a 1993 publication. The L1 coil consists of 12 turns in a ferrite core...
OLED Display Modules (COM180E)
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400 W Amplifier (CB18616E)
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