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Since 1987, the universal power source has been manufactured by the Minsk Caliber plant. The source is intended for use by radio amateurs in the manufacture, configuration and operation of various radio amateur designs on semiconductor devices and chips. Technical parameters of the ICS: Output voltage, V / load current max, A: stabilized, adjustable 3 ... 30 / 1.5. Unstabilized variable (corresponding) 6.3 / 3; 12.6 / 3; 36 / 1.5. Maximum load current, A: stabilized voltage 1.5, unstabilized voltages (respectively) - 3; 1.5. The ripple voltage of the output stabilized voltage, not more than, mV - 20. Instability for the output stabilized voltage when the mains voltage changes by 10% from the nominal 220 V, not more than,% ± 0.5. AC power supply, V / Hz 220/50. Power consumption, not more than, V * A 35. Overall dimensions, mm 310x120x240. Unit weight, not more than, kg 6.5.