Introduction: Flyback Driver Circuit.
This is a instructable that contains scematic and pictures of a single transistor flyback driver.
1x NPN transistor (with heat sink and a fan)
1x 22 Ohm resistor
1x 220 Ohms resistor
1x transformator (or round ferrite core) with same amount of windings
1x flyback transformator
1x 12 - 15V Powersupply ( i use a battery that gives 15 volt, 400 mA)
And some wires.
Step 1: Scematic of the Driver
After i tryed the flyback driver with the primary and feedback windings on the flyback's ferrite core, i thought: *why not try t o use a tiny transformator with same amount of windings to oscillate the process, and so i found out i would try it, and i got 10 - 15Kv More from the flyback transformator by doing this, so i figured i would make an instructable.
i think the picture is somewhat blurry cause of the size, so il point out the important stuffs here:
* The transistor must have a heat sink.
* Before you put 12 volt in, test the circuit with 3 - 6 volts, and make shure that the transistor doesn't get overheated
(I currently run the circuit with 15 V , 400 mA, and still i cannot feel any sign of heat on the transistor)
i get around 50 Kv from this.
If you have any questions, just ask.
Step 2: Pictures & Setup
Here you can see my setup.
Step 3: Sparks
We have a be nice policy.
Please be positive and constructive.