Isolation Transformer (CB26033E)

The figure shows an excellent benchtop isolation transformer system. This circuit was suggested by Electronics Now in December 1997.

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Light Controlled Oscillator (CB16728E)
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12 V Regulated Source for Tube Filament (CB20286E)
Originally created to feed the filaments of a 12AX7 as an audio preamplifier to eliminate the...
Presence Monitor (CB12618E)
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