Small-sized universal lamp tester "MILU-1" (L3-3).

Instruments for adjusting and controlling the PTA.The small-sized universal lamp tester "MILU-1" has been produced since 1961. Since 1970, the device has been produced under the name "L1-3". The device is designed to measure the main parameters of electronic tubes and to take their characteristics. It measures the parameters of receiving-amplifying and low-power oscillator lamps with a dissipation power at the anode of up to 25 W, as well as kenotrons, diodes and zener diodes. The device was used in warehouses of electronic tubes, in radio equipment repair shops, laboratories and at enterprises that develop and produce radio equipment. Power supply from an alternating current with a frequency of 50 Hz with a voltage of 127 or 220 V or from an alternating current of 400 Hz with a voltage of 115 V. The dimensions of the device are 515x 320x230 mm. Weight 22 kg.