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.
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