testing surplus transformers

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: testing surplus transformers
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Thu, 23 Oct 1997 23:50:14 -0500
• Approved: tesla-at-stic-dot-net

From: 	Jim Lux[SMTP:jimlux-at-earthlink-dot-net]
Sent: 	Thursday, October 23, 1997 2:42 PM
To: 	Tesla List
Subject: 	testing surplus transformers

In response to the many posts on microwave oven transformer testing, etc.

For scrounging at surplus yards, I built a 1.2 volt 60Hz oscillator with a
1 ohm source impedance.  This allows me to make a variety of tests, with
the only one I can't make is determining the primary voltage from looking
for the saturation of the core at input voltages greater than nominal.

It is made from a dual op amp. One as the oscillator, the other as a buffer.

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