Phase indicator (CB8295E)

Found in 1980s documentation, this circuit indicates the phase of a three-phase signal from the power grid. The neon lamp is common.

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20 W Amplifier 2SC492 (CB18907E)
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The current of this source is 200 mA at the most, and the output depends on the zener that may...
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Found in Mallory documentation from 1968 this circuit uses an integrated circuit from that time. The...