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Registered Member #2721
Joined: Fri Mar 05 2010, 04:09PM
Location: Guadalajara, Jalisco
Posts: 28
Hello ezis666, i could only find IRFP450's for the fast diodes i have HER250 or DSEI 30-06A, inductor has 30 turns of aprox 1mm copper wire on a 1.5inch diameter toroid (unknown inductance) capacitors available are on the pictures below please advice.
Registered Member #2564
Joined: Tue Dec 22 2009, 05:26AM
Location: Riga, LV
Posts: 11
no, this is 400W mercury vapor lamp. Transformer is from AT PSU, input in 5V winding. Minimum is Uds>3*Vcc, and RdsOn<0.1Ohm
I make many tests and many variations, low and high power. Small (10-20mm) Inductor coil does not work.My working coils are 100mm 2+2wind., 55mm 3+3wind, 25mm 6+6wind. best heating at 90-150kHz
Registered Member #2721
Joined: Fri Mar 05 2010, 04:09PM
Location: Guadalajara, Jalisco
Posts: 28
Thanks, is Uds= Vds = Drain to source Voltage RdsOn = Drain to source resistance, right ? can you post a closeup picture of the transformer, also what parameter determines the zener to use my gues is that is Vgs, is there a way to use a separate PSU for the gates ?
BTW, the inductor on the 12v line conected to the center tap of the main inductor, what is the best to use ?
Registered Member #2463
Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
The photo of the capsule from the MV lamp posted by ezis 666 is noteworthy.
Outside of their lamps they do cause UV burns from a distance. We often had safety calls whenever one of the lamps got smashed by flying debris from machinery and left the core allight. The 1000 watt ones were worse.
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ZVS driver help! 24v 50A psu zenners ????
