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Forums
4hv.org :: Forums :: High Voltage
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Flyback MOT???

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teravolt
Fri Aug 06 2010, 06:36PM
teravolt Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
they are probibly lighter and cheaper than MOT's. it may be good for making a HV trippler
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radiotech
Fri Aug 06 2010, 06:42PM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
the primary is braded magnetic wire
This fact alone, a source of good durable litz wire would be a good reason, to try and seek out these type ovens--they are rare and hard to find because they are more expensive than the $90. box store ovens.. Also they have proportional heating, unlike the on-off cycling of iron transformer types..

I wonder if the various heat settings represent variable DC on the magnetron, which would make that an interesting tube to experiment with. The magnets would be interesting to look at too, if that were the case.
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pauleddy
Fri Aug 06 2010, 07:06PM
pauleddy Registered Member #2909 Joined: Wed Jun 09 2010, 12:31AM
Location: fort belvoir, Va USA ( south of DC)
Posts: 145
unfurntuly i did not get the magnetron it was hard to get to and i dint have the right tool for the job the screws where like stare pattern with a peg in the middle
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Adam Munich
Fri Aug 06 2010, 08:08PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
A must have for anyone dealing with electronics.

Link2
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pauleddy
Fri Aug 06 2010, 08:46PM
pauleddy Registered Member #2909 Joined: Wed Jun 09 2010, 12:31AM
Location: fort belvoir, Va USA ( south of DC)
Posts: 145
thank you i think i just might buy this:-D
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quicksilver
Sat Aug 07 2010, 03:36PM
quicksilver Registered Member #1408 Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
pauleddy wrote ...

amazed your right it is a Toshiba GT60N321
larger chopper IC's ? which one is that
is it the 4 pin thing on the heat sink or the litte 4 pin ic on the board
thers anther small ic on the other side of the board it has allot of pins look like a pc chip
whould i be able to use this board as a driver? like just take out the the fly back an put a crt one on it.
@radio- its really light like less then half a pound the wire i think is just plane copper, the primary is braded magnetic wire, the oven itself is relatively lighter then normal microwaves


The 4 pin is likely your rectifier (it will be a fairly nice HV / moderate current unit; certainly worth keeping; but they are common enough.
The 5pin IC STR2105 is an expensive item. I am told they are rare outside of a HV power supply application. They will be attached directly to a well made heat sink and should be handled with care. Best to pull the heat sink with the unit attached as you will need it in that configuration anyway. I was told second hand that they had once been made by a major mfg (Fairchild??) in the US and now are only available from Asia via SanKen. Getting the datasheet is a chore but the thing is built for HV (& that alone is rare & really worth keeping).

You will have several HV polyester film capacitors. These may vary significantly in terms of High Voltage. But if you get enough they will provide a decent output for many projects; they are generally good quality.
Get a capacitor code sheet as most of the time they will have their voltage in the standard "cap code". But they are capable of several uses & well worth keeping!
There is usually a small very professionally built little coil in there too. Pull that; it's most likely is above 47uH.
I'm trying to think of what else you may find that is unique but the Lutz wire and the transistors are hard to find and NOT cheap. Remember you will have a workable core from that flyback that can provide some very interesting experiments. When you pull that "flyback" there are several ground points that may also be used as anchor points. - Use a HOT soldering iron as they are tough to get off and too close to cut.
All in all, the ability to get several of these PS units can be a goldmine.
If I were you I would study the design. Study the traces and the construction of the board. There is a lot to learn & because they are so wide & strongly built, a section can be cut away and used as a simple voltage multiplier project.
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pauleddy
Sat Aug 07 2010, 06:21PM
pauleddy Registered Member #2909 Joined: Wed Jun 09 2010, 12:31AM
Location: fort belvoir, Va USA ( south of DC)
Posts: 145
unfurtently the 5pin IC is not on the board (it was made in 05) :( thers only two things on the heat sink the 4 pin one and the 3pin trasistor. thanks
i will take your advice and study the board. im going to wait to i find anther one before i take it apart. so i can have two IGBTs to make a ZVS flyback driver
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Adam Munich
Sat Aug 07 2010, 11:55PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
I WANT TO SEE AN ARC!
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pauleddy
Sun Aug 08 2010, 01:22AM
pauleddy Registered Member #2909 Joined: Wed Jun 09 2010, 12:31AM
Location: fort belvoir, Va USA ( south of DC)
Posts: 145
sorry man but i dont want to fry it
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HazzWold 1993
Sun Aug 08 2010, 08:54AM
HazzWold 1993 Registered Member #2563 Joined: Mon Dec 21 2009, 10:17AM
Location: Australia
Posts: 280
Link2

Old news.
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