Fluorescent character display tube control circuit

Abstract

Abstract PURPOSE:To improve the service life of the titled tube by applying power to a fluorescent character display tube only at the display period and avoiding application in other periods to decrease the display tube power application time. CONSTITUTION:In operating an input means 8 such as a keyboard or a card reader, an operation start detecting means 6 turns on a relay drive means 5, actuates a relay 4, a voltage from a transformer 3 is applied to a filament 2 of the fluorescent character display tube 1, which is energized for lighting display. On the other hand, when the display is finished, an OFF command is outputted from an operation end detecting means 7 to the means 5 to stop power application to the filament 2.

Inventors

• 👤 Keiichi Okamoto
• 👤 岡本　敬一
• 👤 Makoto Watanabe
• 👤 真 渡辺

Bibliographic Details