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Powerful high-voltage (2kW) power supply for experiments.

SCHEME powerful high-voltage (2kW) UNIT
FOR EXPERIMENTS

Driving. Powerful high-voltage (2kW) power supply for experiments

As you can see - the circuit is very simple. Transformers should be used on the new microwave oven (ILO) 1 KW each.

The resistors should be used as much as possible more power (200-300W).

The input is useful to put the 2 circuit breakers 10 amps each.

Cores of transformers connected together and grounded.

Capacitors is desirable to put in a solid body, as in the case of breakdown, they can explode much.

The resistors are mounted on the radiator and continuously during operation fan cooled - during operation, they become very hot. Transformers heat the same, but not much. Connection to the network is better at producing machine is switched off.

All wires should be at the output of copper (preferably stranded, as they bend better and easier to work with them), not less than 1.5 mm in diameter and insulation designed for voltage 10KV area. Perfect wire, sold in stores to connect the transformer to the neon signs / advertising - they are designed for voltage 20KV. Low-voltage cables must have a minimum diameter of 2-3mm and included in the network, using only the euro and euro-plug socket (they can withstand high current without heating and arcing contacts).

It is also useful to check the connection wiring in the apartment - if a thin wire, it can not sustain the current surge that occurs when you turn on this circuit and arc occurs at the output. Well course "plug" in the shield should be rated at at least 2 times higher than it consumes circuit (ie in the vicinity of 20 amperes).

I repeat once again - when you turn on this power supply is a strong jump in power consumption. Sometimes, it fuses off right during startup circuit (those 10 amperes) - in which case they should be replaced by more powerful, at 13-15 amps each. If this does not work - will increase the resistance of the resistor to each 30-35K. Do not try to reduce the resistance of the resistor and increase the capacity of the fuse - you can damage the wiring (and thus cause a fire) and transformers.

When two transformers (described above scheme below Smile happy ), Fuse, of course, need to double capacity, ie to 2KW. But still be switched off when trying to get an arc output. Conclusion - the need to put the ballast. The ballast may consist, for example, a heating device (eg, a stove or kettle capacity 2KW). I have done experiments with electric hotplates. I'm so very not like ballast. It is not convenient - tiles large, the efficiency is very low (most of the energy goes into heat), and the arc at the outlet for some reason, very short. With the resistors will be about the same (I wonder where you can find resistor power 2KW?) ... It remains a capacitor. Enough in series with the load capacitor (HV at yield), and most of the problems solved. Condenser small, it is not heated, the efficiency is very high, the arc length (up to 18 cm!). The question remains. What is the use of a capacitor? My first thought - from there, from the microwave oven. Look. Capacity in 1mkf area - perfect. Voltage. 2100V. Poor - after series-connected transformers is given in 2 times more, ie 4,2KV. Again we think. Maybe try to include a capacitor in the abnormal mode (that is, use overvoltage)? Others maintained (film). No, better not - the case is very strong, and if the capacitor breaks - the oil inside will evaporate almost instantly and will be a strong explosion. Therefore, you need to do MMC of these capacitors. Take 2 of the capacitor and connect them in series - get just the right tension. But it is better to combine them in a slightly different pattern. And there is a problem - as is well known, the capacitance of capacitors connected in series is equal to 1 / C = 1 / C1 + 1 / C2. We think. It is known that the capacitance of the capacitor is 1,1mkf. We get the capacity of two series-connected capacitors of about 0,5mkf. This is very little. You can certainly create a real MMC and add more such capacitors in parallel by connecting the chain - but it's too expensive (the only one capacitor is in the region of $ 10). There is another way - to add a little resistance in the circuit, and to limit their consumption of power transformers. You say - I wrote - "I wonder where you can find resistor power 2KW?". But power is already limited by capacitors and a resistor to stand out quite a bit of heat (in the region of 100-200W).

Further, the number of series-connected transformers can be increased to 4 pieces, and all of the transformers will be placed in a container with insulating oil - to prevent heating and winding interturn breakdown. But personally, I still have enough power and 2KW. But if it turns a little - what to do next is already known Smile happy .

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Publication date 20.09.2003gg