FIELD: electrical engineering.
SUBSTANCE: invention relates to can be used as a source of AC welding arc power supply in various branches of national economy. Accumulator power supply of the welding machine contains a monitor unit, a control unit, a power unit, and an energy source placed in the housing. Energy source is made in the form of an accumulator module; at that, the power source also contains a charging unit. Power unit comprises a power cascade made on MOSFET transistors connected in a double-arm circuit and operating in a key mode, wherein the output of the power board is connected to a choke. Power supply also contains fans for separate cooling of the accumulator module and the power unit.
EFFECT: high energy efficiency of the power supply.
1 cl, 2 dwg
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