Re: [TCML] Different sort of MOT

[Henry Hallam <henry@xxxxxxxxxxxxxxxx>]

The one I took apart uses this IGBT:
http://www.igbt.cn/admin/productfile/IHW30N100R.pdf
It's a really neat little solid-state supply.  More info on a similar
one here: http://www.vk3hz.net/amps/Microwave_Oven_Inverter_HV_Power_Supply.pdf

Henry

On Tue, Dec 8, 2009 at 5:49 PM, Paul Brodie <pbbrodie@xxxxxxxxxxxxx> wrote:
> Do these new type microwaves have IGBT's in them? It seems I remember
> someone telling me that they have some very useful IGBT's.
> Paul
> Think Positive
> ----- Original Message ----- From: "Bill Noble" <william_b_noble@xxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Tuesday, December 08, 2009 11:19 AM
> Subject: Re: [TCML] Different sort of MOT
>
>
>> these are useful for things like laser power supplies
>>
>> --------------------------------------------------
>> From: <mrapol@xxxxxxxxxxx>
>> Sent: Tuesday, December 08, 2009 8:05 AM
>> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
>> Subject: Re: [TCML] Different sort of MOT
>>
>>> Thanks for your reply. I am welll supplied with the usual power
>>> supplies--NSTs, an OBIT, and a Ruhmkorff coil, so I don't feel the need to
>>> mess with this item. I shall tear it down for parts.
>>>
>>> Paul
>>>
>>>
>>> ----- Original Message ----- From: "Jim Mora" <wavetuner@xxxxxxxxx>
>>> To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
>>> Sent: Tuesday, December 08, 2009 2:28 AM
>>> Subject: RE: [TCML] Different sort of MOT
>>>
>>>
>>>> This is an Inverter supply. The output is voltage doubled and runs at
>>>> several KHz. I made a voltage tripler attached to one of these with a
>>>> switching of the output diodes as a cap charger. Be carefull with this
>>>> as it
>>>> is quite dangerous. To bad the frequency isn't a bit higher.
>>>>
>>>> There is a schematic of a Panasonic inverter and theory of operation
>>>> somewhere on the Inet. I have it in my archives somewhere if you are
>>>> interested.
>>>>
>>>> Jim Mora
>>>>
>>>> -----Original Message-----
>>>> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
>>>> Behalf
>>>> Of mrapol@xxxxxxxxxxx
>>>> Sent: Monday, December 07, 2009 3:18 AM
>>>> To: Tesla Coil Mailing List
>>>> Subject: [TCML] Different sort of MOT
>>>>
>>>> Like many other I expect, I harvest parts from cast-off microwave ovens.
>>>> I
>>>> don't usually bother with MOTs as power sources, but I found an unusual
>>>> one
>>>> I am curious about.
>>>>
>>>> Yesterday I got a working Panasonic oven, and the transformer is a light
>>>> item with a plastic frame, a few turns of braided primary and a few more
>>>> turns of secondary around a simple ferrite D shaped core. (It looks more
>>>> like an old flyback than the standard MOT). Its mounted on a circuit
>>>> board
>>>> with an imposing array of resistors, diodes, and film capacitors.
>>>>
>>>> Is this of any use in our hobby, other than to tear down for parts?
>>>>
>>>> Paul
>>>>
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-- 
Henry Hallam

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