Voltage converter 12/220 volts. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Voltage converters, rectifiers, inverters
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With this device, you can get an alternating voltage of 220 V from a 12-volt battery. His scheme was published in the Bulgarian magazine "Mlad Constructor". It is based on a multivibrator based on transistors VT3, VT4, operating at a frequency of 50 Hz. On transistors VT1, VT2 and VT5, VT6, powerful amplifiers are assembled, loaded on a matching transformer T1 with a power of 100 watts. Its secondary winding is designed for a voltage of 220 V and a current of 0,5 A, two primary windings - each for 10V and 10A.
The converter can power electric lamps, soldering irons, coffee makers and other electrical appliances for which the rectangular shape of the voltage does not matter. The device can serve as an emergency source of mains voltage.
The semiconductor devices indicated in the diagram can be replaced by domestic ones: VD1, VD2 - KD213, D232; VT1, VT6 - KT805, KT819M, VT2, VT5 - KT814, KT816, VT3, VT4 - KT315, KT312 with any letter indices.
Literature
- Modeller-Constructor No. 1-2, 1992
Publication: cxem.net
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