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SvenGood on you!That is a very interesting area of exploration.I am quite curious about it myself, having some very surprising results using the Variac, bridge rectifier, and dc motor combination.I used it in my work for decades, controlling dc motors that absolutely could not fail, even though the apparatus was often heavy to carry around.I also replaced a brand new squirrel cage type electric motor, that was on a drill press machine that I bought for the work shop on my boat, with a dc motor. The squirrel cage 120 volt would not even twitch the chuck, when plugged into the 12 volt dc to 120v ac inverter.I also tried running it on a 500 watt Honda generator to no joy.It has been now running for years, running trouble free, much more useful, for far more different and various jobs, even as a milling machine, a wood router, and plus able to drill 25 mm holes in stainless steel, which it could never have done before with the ac motor.My only source of power is a set of 40 watt solar panels charging 4'X 6 volt golf cart batteries, while at anchor. It is never hooked to the grid. There is always ample power to use my workshop there.What you are proposing with the buck booster is indeed, very interesting.Simple is reliable, and practical.My Variac on the drill press is 5 amps, and is driving a very ordinary ancient tape drive motor, from an IBM mainframe computer, about 1/4 to 1/3 hp.Cheers WarrenSent from Yahoo Mail on Android
On Mon, Apr 2, 2018 at 8:28 AM, [email protected] [EVGRAY]<[email protected]> wrote:
Hello everyone,
Since I'm into simple things, I want to build a mechanical buck converter for the high power spikes from a Variac as adjustable inductor and a high power diode in module technology. After the Variac I wanted to install a big Elko for smoothing. About the Variac, I could adjust choke suitable for the battery or any other load appropriate.
I found here a used suitable Variac with 6.5 kva which I wanted to use for it. Since electronics react so sensitive to reactive energy and spikes can not tolerate, I would feed the spikes directly through a FWBR in choke and then smoothen with a Elko, the only sensitive would be the diodes.
The first of which builds a large switching power supply. laughing.
I stand on the old indestructible technology.
regards
Sven
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