LXXI. A resistance comparator

Chopper Stabilized Low Resistance Comparator

The paper describes an improvement of the chopper method for elimination of parasitic voltages in a low resistance comparison and measurement procedure. The basic circuit diagram along with a short description of the working principle are presented and the appropriate low resistance comparator prototype was designed and realized. Preliminary examinations confirm the possibility of measuring ext...

An Automatic Dc Current Comparator Resistance Bridge

The principle of the Direct Current Comparator has been around for some 30 years, however, very little work has been done towards automation. This paper describes a bridge for measuring resistance ratios in the range of 0.001 ohms to 10,000 ohms using a microprocessor controlled automated DC Current Comparator with IEEE-488 to an uncertainty of better than 0.1 ppm from 1 ohm to 1000 ohms and 0....

AccuBridgeTM A SELF CALIBRATING DC CUREENT COMPARATOR RESISTANCE BRIDGE

An optimized room temperature resistance bridge (AccuBridgeTM), modeled after the cryogenic current comparator, has been developed to determine current ratio’s with the highest accuracy. The direct current comparator has been optimized to reduce the leakage effects of the comparator. In addition, new self calibrating direct current sources have been fabricated and tested. AccuBridgeTM relies on...

Lxxi. Experiments on Respiration

A New Design of Fault Tolerant Comparator

In this paper we have presented a new design of fault tolerant comparator with a fault free hot spare. The aim of this design is to achieve a low overhead of time and area in fault tolerant comparators. We have used hot standby technique to normal operation of the system without interrupting and dynamic recovery method in fault detection and correction. The circuit is divided to smaller modules...