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

Subject: Re: [Amps] High Voltage Switching Supply (Bob D.)
From: Steve Harrison <>
Date: Sun, 3 Mar 2024 07:22:22 -0800
List-post: <>
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.


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, 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
2. A hacked enclosure and control.

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.

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