Tube Tester mod. TV-7/U - Hickok Electrical Instruments - USA - 1953

TV-7/U circuit diagram - click on the images to enlarge.

TV7/U diagram - part 1 TV7/U diagram - part 2 TV7/U diagram - part 3

This equipment need a 115 Vac net, to use it with 220 Vac come in useful an ac adapter:

Autotransformer - click to enlarge

(Articolo su CQ Elettronica n 05/2000)

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