-40%

100 pcs/pack Vintage indication neon light bulbs tubes INS-1 rare NOS

$ 13.2

  • Model: INS-1
  • Type: NOS Tube

Description

Lot is for 100 pcs tubes INS-1 in a box/pack. The INS-1 voltage indicator light is miniature with a lens dome, flexible unidirectional current inputs, cold cathode and neon filling. Designed to indicate voltage in DC and AC circuits with a frequency of 50 Hz. The INS-1 voltage indicator is for use in computing, automation and other radio engineering devices of stationary and mobile equipment of wide application. It is produced in a miniature glass design. Overall dimensions of the INS-1 voltage indicator: — length no more than 30 mm; — diameter no more than 7.2 mm. Base type: without base with flexible leads. Lamp weight no more than 1 g. Durability not less than 5000 h. Main characteristics of INS-1: Ignition voltage, no more than: 65-95V* Discharge maintenance voltage: <55V Nominal current: 0.5mA Allowable current: 0.2-1.0mA Brightness, no less than: 2.5 cd/m2 Mean time between failures, no less than: 2000 h** Dimensions (max.): Ø6.8x30mm Lead length (min.): 30mm Operating temperature: -60..+85°С INS-1 indicators must be connected via ballast resistance, which is calculated using the formula: Rbal = (Usource.p.-Usupport.r)/Iwork. In particular, for a ~220V network, the resistance should be about 330 kOhm.