Circuit Diagram of SL322-Type Flexible and Light-Spot Displaying Level Indicator

Published:2011/7/2 0:04:00 Author:Vicky | Keyword: Flexible and Light-Spot Displaying , Level Indicator | From:SeekIC

The circuit is made of luminous display driver SL322, luminous diodes from D1 to D5, transistor from BG1 to BG5 etc. When K is closed, all the triodes’ emitters are in ground connection state. When the level rises to make luminous diode D2 give out light, electrical potential of B rises, BG1 is conducted, and then the luminous diode D3 goes out. When the electrical potential rises to make the D3 luminous, then electrical potential of C rises, BG2 is conducted, and thereby D2 goes out. In the context, due to the unchanged electrical potential of B, BG1 is still off, and D1 is still lightless. Ultimately, when the electrical potential rises to make D5 give out light, transistors form BG1 to BG4 are conducted, and luminous from D1 to D4 all die out, which formulates light-spot displaying. When the switch K is disconnected, all triodes stop working, and the light-spot displaying ends.



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