Finding the "sweet spot" on the variac linked to the gain and volume settings on the amp takes a little bit of experimentation, however, the end result has always proven valuable in terms of …

Aug 19, 2018 · Hello there, A variac is a transformer with variable secondary winding turns. That means the applications are almost endless. Since in it's main uses it lowers power to AC …

Dec 27, 2017 · Variacs are not isolated from earth. The variac pictured can put out 130V ac, referenced to earth ground. An isolation transformer is not referenced to earth making circuits …

Jul 18, 2005 · It's worth realizing that "Variac" was the trademarked name of a product by General Radio (that eventually became a catch-all term; " Vari able A.C.), while "Powerstat" is likewise …

Jun 15, 2016 · I am currently working on a project where I need variable power between 200 - 250vdc @ 4 - 8 amp range. I have (2) 0 - 140vac @5amp POWERSTAT variable …

May 9, 2011 · Right, got it fixed, I disassembled the variac and cleaned all the contacts (primarily a wavy copper ring that was really dirty) using sandpaper, an eraser, and acetone.

Apr 6, 2024 · For these amps that I use the brownie or a variac, I am not carting that with me everywhere I go with that amp. By contrast to a sf or Bf fender, my friend has a wide panel …

May 8, 2017 · Hello! I'm building "isolation transformer+variac+dim bulb tester combo" according to plans in attached pictures (from "Mr Carlson's Lab" YT channel - It's gonna be enclosed in …

Dec 19, 2011 · Whenever I turn on my variac (which is a 15A rated device I got for cheap) it trips the 32A MCB for the sockets. I fear it's the inrush current, as it makes the lights dim briefly. …

May 13, 2016 · I was in my teens some 40 years ago and somehow managed a 3A Variac for free and a 1 KW isolation transformer for like $10.00. I added an Analog voltmeter and ammeter as …