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CV271 fluorescent indicator

Size This indicator measures 48x17mm overall and has a B7G base.


Internal view

This is an argon filled fluorescent indicator tube with a willemite coating.

Information on what this is designed to indicate is needed. However the test data says a modulated RF voltage of 27V peak value at 45MHz, modulated to 100% at 50Hz is applied to the anode from a 150 ohm line loosely coupled to the source of power, and the filament voltage is adjusted until a glow occurs.


Filament voltage 1.3V
Filament current 163mA


Pin Function
1 Filament
2 Anode
3 n/c
4 Anode
5 n/c
6 Anode
7 Filament

This file was last modified 23:10:24, Wednesday February 23, 2022