Home » » Simple Positive And Negative Voltage Power Supply Circuit Diagram

Simple Positive And Negative Voltage Power Supply Circuit Diagram

Written By buang hary on Jumat, 23 Agustus 2013 | 04.26

This Simple Positive And Negative Voltage Power Supply Circuit Diagram provides a precision voltage source that can be adjusted through zero to positive and negative voltages, which eliminates reversing connections on the power supply. Also, it is possible to get exactly 0 V, without some offset. As to how this circuit works, first consider the -1 V/V to +1 V/V linear gain-control amp (see the figure). A Burr-Brown INA105 difference amp is used in a unity-gain inverting amp configuration. 

 Positive And Negative Voltage Power Supply Circuit Diagram

Simple Positive And Negative Voltage Power Supply Circuit Diagram


A potentiometer is connected between the input and ground. The pot`s slider is connected to the noninverting input of the unity-gain amp; this input is typically connected to ground. With the slider at the bottom of the pot, the circuit is a normal-precision unity-gain inverting amp with a gain of -1.0 V/V ± 0.01% maximum. 

With the slider at the top of the pot, the circuit is a normal-precision voltage follower with a gain of ± 1.0 V/V ± 0.001% maximum. With the slider in the center, there`s equal positive and negative gain for a net gain of 0 V/V. The accuracy between the top and the bottom will usually be limited by the accuracy of the pot.

Source Simple Positive And Negative Voltage Power Supply Circuit Diagram
Share this article :

0 komentar:

Posting Komentar

Entri Populer

 
Support : Your Link | Your Link | Your Link
Copyright © 2013. CIRCUIT DIAGRAMS FREE - All Rights Reserved
Template Created by Creating Website Published by Mas Template
Proudly powered by Blogger