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Hoffman Amps Forum image Author Topic: Variac Question  (Read 3121 times)

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Offline Jatchley

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Variac Question
« on: December 07, 2020, 08:26:52 am »
is it normal for my variac to put out 70VAC even when turned off? i was checking out an amp the other day and found even with my variac turned entirely off with the amp plugged into it the power cable was reading 70VAC. it seemed strange to me that it was still giving juice even when turned off. it's relatively new i bought it from circuit specialists a few months ago. its the light blue 5A variac. 

Offline sluckey

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Re: Variac Question
« Reply #1 on: December 07, 2020, 09:22:42 am »
Quote
the power cable was reading 70VAC.
70VAC with respect to what? Connect your meter to the black and white wires in your power cord. Still got 70VAC?

A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline Latole

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Re: Variac Question
« Reply #2 on: December 10, 2020, 03:58:24 am »
"it seemed strange to me that it was still giving juice even when turned off.

it is not normal. it is not at OFF

More information please ; link to the variac/ seller

Offline mresistor

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Re: Variac Question
« Reply #3 on: December 10, 2020, 08:39:47 am »
More information please ; link to the variac/ seller


"i bought it from circuit specialists a few months ago"


https://www.circuitspecialists.com/variac-variable-ac-ps05kva_with_digital_display.html

Offline sluckey

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Re: Variac Question
« Reply #4 on: December 10, 2020, 09:16:23 am »
"it seemed strange to me that it was still giving juice even when turned off.

it is not normal. it is not at OFF

More information please ; link to the variac/ seller
He was measuring the voltage incorrectly. His meter was connected to line and earth rather than line and neutral.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

 


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