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Unlimited Voltage Potential Generator Circuit

IP.com Disclosure Number: IPCOM000076925D
Original Publication Date: 1972-May-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Lee, JM: AUTHOR

Abstract

This is a voltage building circuit for increasing output voltages, particularly in field-effect transistor (FET) devices.

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Unlimited Voltage Potential Generator Circuit

This is a voltage building circuit for increasing output voltages, particularly in field-effect transistor (FET) devices.

When node A is down, node B is charged to one threshold level below +V through Q1. When node A rises, node B follows the rise due to coupling capacitor C1. While node A is up, node C is down allowing node D to be charged by C1 through device Q2. This charging process continues until C2 is fully charged and device Q2 ceases to conduct. This steady state is achieved after a number of cycles. A rising node C will then render an output potential at node D much higher than the supply voltage (+V). An indefinite number of modular voltage building blocks can be connected in series to provide an unlimited voltage potential output. Negative voltages can also be generated by this circuit by using a negative supply voltage.

This circuit also operates in bipolar technology by using bipolar diodes instead of FET devices. However, application in bipolar technology is limited, because of the fact that the circuit is not capable of delivering DC current as most bipolar applications require.

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