DC to AC Converter

• To: tesla-at-pupman-dot-com
• Subject: DC to AC Converter
• From: gweaver <gweaver-at-earthlink-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Wed, 24 Mar 1999 21:17:21 -0700
• Approved: twf-at-verinet-dot-com

I would like to have a converter to run my small portable TC from a car
battery. Does anyone have a good circuit drawing for a converter that is
small, simple, light weight, that really works. I need 750 watts, 120 VAC
from 12 VDC 60 Hz.

I got a circuit from the web that uses two 2N3055 transistors that claims to
produce 250 watts output, but maximum output is really 60 watts and I need a
1 lb. heat sink on each transistor.  I built a circuit using 10 transistors,
10 pounds of aluminum heat sinks, 500 watt transformer, and misc parts. It
produces 360 watts output, measures 12" by 12" by 16" and weights about 35 lbs.

Wal Mart has a 250 watt unit for $65.00 that weights about 2 lbs. 

I have some SCR's rated 400 amps 600 volts.  Is there a way to use an SCR to
build a converter? 

Gary Weaver

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