Tester of electronic tubes "L3-3".
Instruments for adjusting and controlling the PTA.The electronic tube tester "L3-3" has been produced since 1970. It is designed to check the suitability and control the parameters of receiving-amplifying and low-power generator (with a dissipation power at the anode up to 25 W) lamps, kenotrons, diodes and zener diodes. The type of the tested device is set by installing the corresponding cardboard card from the set on the dial-up field of the device, where the pin switching of the voltage lamps and indication circuits connected to the electrodes takes place. The device could be used in warehouses and bases of consumers of electronic tubes, in repair shops, laboratories, as well as at enterprises that develop and produce radio equipment.
