Good day to all. This article will focus on one very interesting homemade The author assembled this mini plasma cutter based on the FP1016 bipolar transistor. (FP1016 specifications: Collector-Emitter voltage 160 V; collector current 8 A; Power dissipation - 700 W; Frequency - 65 MHz.)
The author assembled according to this scheme.
The author made the core of the transformer from a ferrite rod, from a magnetic antenna of a radio receiver.
Cutting off a piece of the right size from it.
And he wound the winding of the collector of 20 - turns with copper wire with a diameter of 1 mm.
Next, I wrapped the winding of the base of 5 turns with a diameter of 0.6 - 0.7 mm. All windings are wound in one direction.
Further, the author has insulation in 3 layers of electrical tape.
Then, the author wound a step-up winding of 500 turns with a wire of 0.14-0.2 mm, after having put insulation on one end of the wire.
After every 125 turns, the author passed with one layer of electrical tape.
Such a coil was obtained by the author.
Then the author put the transistor on the radiator and soldered everything according to the scheme.
He used resistors with a power of 0.5 watts. Here is a mini plasma cutter after soldering. As a mass, the author used a clerical knife blade.
Then the author set the power button of the device.
And as usual, a test from the author on the performance of a mini plasma cutter.
According to the author, such a mini plasma cutter can cut thin steel.
Melt steel nails with a diameter of 2 - 2.5 mm.
Copper wire with a diameter of 1 mm.
Welding of copper wires with a diameter of 0.7 - 0.8 mm.
DIY video: