This particular transformer was a special brand of surplus HV transformer,
coming out of the first generation microwave ovens from the Swedish
manufacturer Husqvarna.
It had a 2200 V 1,1 A CCS secondary winding and several primary windings
(220/440V if i remember correctly), and it was not of the saturated magnetic
circuit type
that become standard in later designs of microwave ovens.
Three of those in delta-wye connection with a six-pulse rectifier made an
almost perfect
three-phase HV PS for 4-1000A's in parallel.
Today's microwave oven transformers are not directly suited for HV supply
service,
unless they are modified.
73/
Karl-Arne
SM0AOM
----- Original Message -----
From: "va3pl @ cuic.ca" <va3pl@cuic.ca>
To: <amps@contesting.com>
Sent: Wednesday, August 10, 2005 5:53 PM
Subject: Re: [Amps] TV sweep tubes and 6146s
----- Original Message -----
From: "Karl-Arne Markström" <sm0aom@telia.com>
To: <amps@contesting.com>
Sent: Wednesday, August 10, 2005 11:43 AM
Subject: Re: [Amps] TV sweep tubes and 6146s
> [used in 1979 as an IPA (!) ]. Total cost: 200 SEK (approx. 50 USD today)
, of which the ex-microwave oven power transformer (95 SEK + carriage) took
half.
>
Is anybody building small amp using microwave oven power transformer?
How those transformer are made and what kind of winding they have?
Andy - VA3PL
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
--
No virus found in this incoming message.
Checked by AVG Anti-Virus.
Version: 7.0.338 / Virus Database: 267.10.5/67 - Release Date: 2005-08-09
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.338 / Virus Database: 267.10.5/67 - Release Date: 2005-08-09
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|