ROYER SETUP WITH SEPARATE GATE VOLTAGE SOURCE
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I worked these days at an interesting project, a pulsed SSTC, but unfortunately, it didnt work (I guess that the major problem is the primary feedback, maibe the ferrite core for the GDT was not chosen very well..eh). Finally, I got bored and dismantled it. But I remember that I saw a discussion on the HV forum about the possibility of building a Royer oscillator with a separate gate voltage source. This will eliminate the need for high power hot resistors (to get the gate polarising voltage), the zenner-resistor network on the gates, and the high frequency ringing on the gates at high voltage input. I had all the parts in my hands....from the pulsed SSTC so, why not to try?
ELECTRICAL SCHEMA
T1, T2: IRFP260N mosfets (200 V, 52A)
D1, D2: MUR1100, ultrafast diodes (1000 V, 1 A)
D3, D4: MUR3060 ultrafast diodes (600 V, 30 A)...because i had them, you can use lower current ones.
C: 6 uF, 600 V polietilene cap
DC flyback, primary with 4+4 turns with middle tap
L: iron powder toroid with 70-80 turns on it
Power: 220V/24 V xfrm
PICTURES
SETUP
SETUP DETAILS
12 V SOURCE
AND ANOTHER MOVIE.....
AND A LITTLE MOVIE...have fun
LONG ARCS BETWEEN A NEEDLE AND A COIN - movie
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