Converter circuit for gauss guns
The converter is made on the popular 555 series timer. The design of the converter is quite simple and can not cause difficulties even for beginners radio amateurs. The power of such a converter largely depends on the field-effect transistor used. The main types of field effect transistors used are IRFZ44, IRL3705, IRF3205. The last two work fine, but on the first you can observe a large heat dissipation, although the transistor needs a heat sink.The converter power directly depends on the power source, with an uninterruptible battery power of about 50-60 watts or more. Such a converter will be able to charge a capacity of 400 volts 1000 microfarad in just one second! and all this thanks to the increased power of the converter.As is known, the 555 series microcircuit can operate in two modes - 1) as a timer (the main purpose of the chip), 2) as a generator of rectangular pulses, in our case, the microcircuit works as a master oscillator. The pulses that produce the microcircuit go to the gate of a powerful field-effect transistor, as a result it causes it to open and close with this frequency (the frequency of the generated pulses) forming a high-frequency alternating voltage in the primary winding of a transformer.
The transformer primary winding consists of 7 turns of 1 mm wire, you can also use several wires of a thinner water, for convenient winding.Next, we put isolation and wind the secondary over the primary winding.The winding consists of 120 turns of wire with a diameter of 0.2-0.3 mm. Winding is wound in layers, each layer has 40 turns. You can use adhesive tape, insulation tape, PTFE, etc. as interlayer insulationThe converter power is quite high, so you can use the circuit as a converter 12-220 volts, but in this case the number of turns in the secondary winding should be reduced to 65.You can wind a transformer on a ferrite ring, armor cup or U-shaped frame (ferrite), dimensions are not very much and important, as long as the windings fit in.In my case, the installation is made on a breadboard from both sides.SMD components were also used to reduce the size of the board. The transformer was also mounted on the board.Output voltage of a converter voltage of the order of 380 -440 volts, any impulse diodes with a voltage of 1000 volts and a current of at least 1 ampere (FR107, FR207, UF4007 and others) can be used for rectification.
The transformer primary winding consists of 7 turns of 1 mm wire, you can also use several wires of a thinner water, for convenient winding.
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