开云体育

I purchased one unit from Costco. The price was $99. The unit was surprisingly light in weight compared to my old transformer-powered 400W u-wave oven. I found no RFI problem from 50 - 550 MHz. The rating is 1300w, which is most probably the DC input power to the magnetron. At 120V, c. 17A of current is drawn. If a SSB amateur radio amplifier was built using the Matsushita switcher PS, two units are probably needed. By putting the 120V inputs to the two switcher supplies in series, operation from a standard, 240VCT, 20A outlet would work. I have not yet disassembled the oven to measure the HV. Does anyone know what's the typical range of potentials used to power magnetrons of this size? tnx

R L MEASURES, AG6K. 805-386-3734
r@...

I found the following web page:


home.htm

de Paul, W8AEF

Does anyone know what's the typical range of potentials used to

power

magnetrons of this size? tnx

R L MEASURES, AG6K. 805-386-3734
r@...

Very interesting Rich.
What would be the regulation of this switched mode power supply?
Cheers, Dick

--- In ham_amplifiers@..., R L Measures <r@...> wrote:

I purchased one unit from Costco. The price was $99. The unit was
surprisingly light in weight compared to my old transformer-

powered

400W u-wave oven. I found no RFI problem from 50 - 550 MHz. The
rating is 1300w, which is most probably the DC input power to the
magnetron. At 120V, c. 17A of current is drawn. If a SSB amateur
radio amplifier was built using the Matsushita switcher PS, two

units

are probably needed. By putting the 120V inputs to the two

switcher

supplies in series, operation from a standard, 240VCT, 20A outlet
would work. I have not yet disassembled the oven to measure the

HV.

Does anyone know what's the typical range of potentials used to

power

magnetrons of this size? tnx

R L MEASURES, AG6K. 805-386-3734
r@...

Dave Smith VK3HZ did some ivvesigation of these, with interesting findings at:

www.users.bigpond.net.au/dwsmith/hv_inverter.pdf

Roger

Tnx, PAUL. Sounds like two Panasonic switcher supplies would run an 8877 om SSB.

On Sep 19, 2006, at 7:32 PM, w8aef wrote:

I found the following web page:

appliance_magnetron_tube_
home.htm

de Paul, W8AEF

Does anyone know what's the typical range of potentials used to

power

magnetrons of this size? tnx

R L MEASURES, AG6K. 805-386-3734
r@...

Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...

On Sep 20, 2006, at 1:30 PM, Dick wrote:

Very interesting Rich.
What would be the regulation of this switched mode power supply?
Cheers, Dick

I have no idea, but it has to be pretty good, since due to a switcher's light weight, if there was a lot of ESR, something would be likely to melt down.

--- In ham_amplifiers@..., R L Measures <r@...> wrote:

I purchased one unit from Costco. The price was $99. The unit was
surprisingly light in weight compared to my old transformer-

powered

400W u-wave oven. I found no RFI problem from 50 - 550 MHz. The
rating is 1300w, which is most probably the DC input power to the
magnetron. At 120V, c. 17A of current is drawn. If a SSB amateur
radio amplifier was built using the Matsushita switcher PS, two

units

are probably needed. By putting the 120V inputs to the two

switcher

supplies in series, operation from a standard, 240VCT, 20A outlet
would work. I have not yet disassembled the oven to measure the

HV.

Does anyone know what's the typical range of potentials used to

power

magnetrons of this size? tnx

R L MEASURES, AG6K. 805-386-3734
r@...

Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...