Browse Prior Art Database

Three Level Inverter

IP.com Disclosure Number: IPCOM000097046D
Original Publication Date: 1962-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Trampel, KM: AUTHOR

Abstract

This inverter provides a signal that resides in three different voltage levels, as opposed to a signal which varies between two voltage levels. The three-voltage level signal is employed in asynchronous computer operation.

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Three Level Inverter

This inverter provides a signal that resides in three different voltage levels, as opposed to a signal which varies between two voltage levels. The three- voltage level signal is employed in asynchronous computer operation.

Resistors 27, 28, 34 and 36 have values such that transistors 20 and 21 conduct when a 1 is applied to the input. When a 0 is applied, however, transistors 20 and 21 do not conduct. When the input voltage resides at a voltage between the 1 and 0 levels, the N level, transistor 21 conducts, while transistor 20 does not conduct.

At this time, Zener diode 13 sets the output level at a voltage equal to the N voltage level above the collector 31 voltage, which approaches the voltage of ground 11.

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