In this setup I pulse my pancake coil.
By applying a short pulse to a coil and abruptly stopping the flow of current, magnetic field around this inductor collapses producing field oscillations in local space around the coil. We can rectify those oscillations to do some work...
COIL:
Multilayer Tesla bifilar-in-series pancake coil made from 0,5mm wire, 26x2x4=208 turns, CD disc diameter;
R = 4.50 Ohm resistance;
L = 2.48 mH inductance
f = 277 kHz self-oscillation ringing frequency when pulsed;
OUTPUT CAPACITOR: 0,15 uF 630V
DIODES: MUR160 600V
MOSFET: IRFP460 500V
FREQUENCY GENERATOR: set to 277kHz square wave pulse. In-built mosfet driver. 9V
LEDs: 13 pcs + 1.2 kOhm resistor all connected in series. Each led is rated 120mA max.
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