[Amps] TV sweep tubes and 6146s

[Fortra]

Hi Karl-Arne,

could you quote some more brands of microwaves ovens, having mentioned 
transformers and it would be helpful year of manufacturing.
Here we go, buying your old microwave ovens for peanuts!

Regards, Nermin S58DX
----- Original Message ----- 
From: "Karl-Arne Markström" <sm0aom at telia.com>
To: "va3pl @ cuic.ca" <va3pl at cuic.ca>; <amps at contesting.com>
Sent: Wednesday, August 10, 2005 6:27 PM
Subject: Re: [Amps] TV sweep tubes and 6146s


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 at cuic.ca>
To: <amps at 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 at telia.com>
To: <amps at 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



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