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The source of "B2-1" voltages was produced presumably since 1974. Due to the design and electrical parameters, the source of the filament voltage allows you to create any necessary power supply system for electronic devices and other devices with unregulated stabilized AC voltage. The output terminals of the B2-1 device are isolated from the case, which allows to expand the possibilities of its use. Overall dimensions of BP 435x130x235 mm. Weight 20 kg.