Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: Jatchley on December 07, 2020, 08:26:52 am

Title: Variac Question
Post by: Jatchley 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. 

Title: Re: Variac Question
Post by: sluckey 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?

Title: Re: Variac Question
Post by: Latole 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

Title: Re: Variac Question
Post by: mresistor on December 10, 2020, 08:39:47 am

Quote from: Latole on December 10, 2020, 03:58:24 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

Title: Re: Variac Question
Post by: sluckey on December 10, 2020, 09:16:23 am

Quote from: Latole 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

He was measuring the voltage incorrectly. His meter was connected to line and earth rather than line and neutral.