This paper describes the single-limit voltage comparator,Schmitt trigger and window voltage comparator each of which incorporates only a second-generation current conveyor (CCII).

To accomplish a voltage comparator with very low threshold and high precision that is quite complex in the integrated circuit of single power supply,a new comparator with extraordinary low threshold is designed.

It introduces a method of constructing high precision voltage comparator with 312 bit A/D converter IC7107, to the effect and the V\%\-\{in\} comparing precision can reach to 0.

The discriminator circuit is mainly composed of an integrated voltage comparator, MAX921, and owns the characters of very low power and low operating voltage.

Based on the analysis of some phenomena observed when applying integrated circuit operational amplifier as voltage comparators, this paper tries to present some causes and find out a solution by further analysing the observed deviations from theories; thus to strengthen the relationship between theory and experiment and to improve students expereimental capabilitie

A novel current-limited comparator for switching power supply;

The control circuit contain current-limited comparator, current-limtied state machine, voltage reference, digital control, sequence detect and main control gate.