[Amps] Paralleling plate xfmrs.

[jim.thom jim.thom@telus.net]

Date: Thu, 23 Oct 2025 10:30:42 +0800
From: Alek Petkovic <vk6apk at bigpond.com>
To: amps at contesting.com
Subject: Re: [Amps] Paralleling plate xfmrs.

>Simple way to settle it is to fire the pair of transformers up but don't
>connect the secondaries together. Measure the secondary voltage of each
>one and compare.

>All good? Strap'em together.

>73, Alek VK6APK.

That's exactly what scott did...and also myself.

In his case, he applied exactly 10 vac from the variac to the paralleled
primary's..... with secondaries temp disconnected from each other..... and
both  connected to nothing.

With normal 240 vac applied, sec is 5300 vac. That's a 5300 / 240 = 22.083
turns ratio.

With 10 vac applied,  xfmr  #1 has  220.83 vac.  Xfmr  # 2 has  221.6 vac
     That's dick. 5300  vs 5318.4     Gimme a break.