[Amps] High Voltage Switching Supply (Bob D.)

[Steve Harrison]

Well, there's no free lunch... Although these inverters present an
interesting idea, this particular one uses a flyback transformer to
generate the HV, which is unregulated and so varies between 2200 and as
much as 6 kV, the youtube author said at one point in his first video.
Also, you'll note the AC line input connections are clearly NOT rated
for amplifier-compatible AC input current levels like 12 - 20 amps or
more (either 120V or 240V). The HV DC output current level is apparently
only around a hundred or so mils to a few hundred mils, NOT the
half-amp-plus we need for "serious" amplifier power levels. Note, in the
second video, the tiny size of the switching IGBT device heatsink.

An interesting idea, and something to play with; but not quite in the
range of what we need in order to stop making the Peter Dahl company
rich  8-)

Steve, K0XP

P.S. Here are the youtube video links again, for reference.

Links:
1.https://www.youtube.com/watch?v=Vchhc7SLcaw&t=74s
2.https://www.youtube.com/watch?v=_iX1rkJ53Ck


On 3/3/2024 6:40 AM, Steve Harrison wrote:
> What you may have missed is that we're talking about industrial-strength
> Panasonic high voltage inverters... i.e., switching power supplies used
> with microwave ovens. Like in the 1500-watt range. Like in 2200V at
> something like 700 mils. Not zactly chicken feed  8-)
>
> Steve, K0XP
>
>
> On 3/3/2024 6:26 AM, Pete Smith N4ZR wrote:
>> I must have missed something at the beginning of this thread - 2200
>> volts is all fine, but I presume the current is very low.  So why do
>> we care (us amps people)?
>>
>> 73, Pete N4ZR
>>
>> On 3/3/2024 8:49 AM, Steve Thompson via Amps wrote:
>>> Sorry, no idea why a blank email went out. Try again....
>>>
>>> There's a piece by VK3HZ on a Panasonic supply from many years ago,
>>> currently to be  found at nasaspaceflight.com, also some
>>> discussions in the archives here.
>>>
>>> Steve G8GSQ
>>>
>>>
>>>
>>> On 03/03/2024 00:02, Bob D. wrote:
>>>> Google brought a couple of youtube videos:
>>>> 1. Three wire control signal requirements for the Panasonic Inverter
>>>> module.
>>>> 2. A hacked enclosure and control.
>>>> Links:
>>>> 1. https://www.youtube.com/watch?v=Vchhc7SLcaw&t=74s
>>>> 2. https://www.youtube.com/watch?v=_iX1rkJ53Ck
>>>>
>>>> These things are roughly $60 on ebay, amazon, etc.
>>>> Mentioned in the video is 2200V under load. No further detail.
>>>> I'm a bit more motivated to dig mine out.
>>>>
>>>>
>>>
>>> _______________________________________________
>>> Amps mailing list
>>> Amps at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
> --
> See my QRZ.com page at *https://www.qrz.com/db/K0XP*
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
--
See my QRZ.com page at *https://www.qrz.com/db/K0XP*