Dim-Bulb Tester

138

02:39:49

Current limiting and high current draw notifying circuit. Commonly used in troubleshooting and testing vintage tube audio where high voltage in is common. Second switch provides current limiting capabilities. VR represents variac. Resistance is arbitrary for this diagram. should be variable voltage. Transformer is for circuit isolation. First switch is for on/off. Secondary winding's are arbitrary in this diagram.

published 8 years ago

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