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Compensated Voltage Regulator

IP.com Disclosure Number: IPCOM000077689D
Original Publication Date: 1972-Sep-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Ainsworth, R: AUTHOR [+2]

Abstract

The present compensated voltage regulators provide very tight voltage regulations in circuits, which are incapable of being referenced to ground. In addition, the present voltage regulators are capable of utilizing a voltage standard, which is referenced to a voltage supply which may be poorly regulated.

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Compensated Voltage Regulator

The present compensated voltage regulators provide very tight voltage regulations in circuits, which are incapable of being referenced to ground. In addition, the present voltage regulators are capable of utilizing a voltage standard, which is referenced to a voltage supply which may be poorly regulated.

The compensated voltage regulator circuits are shown in Figs. 1 and 2. The only difference between the circuits is that the signal leads to the operational amplifier 10 are reversed, in order to reverse the polarity of the output signal.

The voltage regulators utilize an operational amplifier and have built-in reference voltages. The regulators have a minimum voltage requirement for operation and establish the reference relative to the negative supply input. With the circuit shown, even in the case where the operational voltage is provided by the combination of a plurality of supplies rather than a single supply, the internal reference still may be maintained even though the input supply (negative) varies.

In effect, the circuit utilizes the operational amplifier as an adder/subtractor. The negative voltage supply (V-) is applied to one of the inputs to operational amplifier 10, and the reference voltage (V PEF) is applied to the other input to the operational amplifier. With equal resistor dividers on both inputs, the output voltage is independent of any variation in the V- voltage supply.

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