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Window Comparator Circuits
 

Last Updated: June 02, 2021 01:44 PM

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2 buttons provide safe start -  07/06/00 EDN Design Ideas:  The circuit in Figure 1 provide as a safety interlock that checks the actuation of two pushbuttons before enabling a relay.  When you push both buttons, the circuit actuates the relay.  At that point, you can release one of the switches without the relay' Design by Vincent Himpe, Alcatel Microelectronics, Desselgem, Belgium

Absolute-value comparator touts accuracy, size -  03/07/02  EDN Design Ideas:  A typical window comparator uses two comparators and a single op amp to determine whether a voltage is inside or outside a boundary region.  Figure 1 shows a typical implementation.  IC 1 is an inverting op amp with a gain of –1.  VREF and –VREF create the wi Design by Teno Cipri, Engineering Expressions Consulting, Sunnyvale, CA

2 buttons provide safe start -  07/06/00 EDN Design Ideas:  The circuit in Figure 1 provide as a safety interlock that checks the actuation of two pushbuttons before enabling a relay.  When you push both buttons, the circuit actuates the relay.  At that point, you can release one of the switches without the relay' Design by Vincent Himpe, Alcatel Microelectronics, Desselgem, Belgium

Absolute-value comparator touts accuracy, size -  03/07/02  EDN Design Ideas:  A typical window comparator uses two comparators and a single op amp to determine whether a voltage is inside or outside a boundary region.  Figure 1 shows a typical implementation.  IC 1 is an inverting op amp with a gain of –1.  VREF and –VREF create the wi Design by Teno Cipri, Engineering Expressions Consulting, Sunnyvale, CA

Design low-duty-cycle timers -  08/22/02 EDN Design Ideas:  Designing astable circuits using the industry-standard 555 timer is a straightforward process when duty cycles are 50% or greater.  However, you must overcome the many pitfalls of low-duty-cycle circuits to arrive at a desired result.  Using only ideal components eases the design, but the components themselves are hard to obtain Design by Phil Rogers, Texas Instruments Inc, Rockwall, TX

Electronic fuse emulates fast- or slow-blow fuses -  11/09/00 EDN Design Ideas:  The electronic-fuse circuit in Figure 1 combines the properties of a current transducer and a solid-state relay to disconnect low power at preset levels.   Using this circuit lets.   PDF contains multiple circuits, scroll to find the one of interest Design by John A Hasse, Colorado State University, Fort Collins, CO

Expanded-scale indicator revisited -  08/08/02 EDN Design Ideas:  The visualization aid that a previous Design ideas describes allows only the expansion of the upper end of the scale (Reference 1].  But what can you do if, according to your project requirements, you need to expand the middle region of the scale? Figure 1a illustrates the challenge.  A voltmeter comprises a 100-µA dc meter and a series resistor Design by Abel Raynus, Armatron International Inc, Melrose, MA

Missing-codes tester checks 16-bit ADC in 7 sec -  06/10/99 EDN Design Ideas:  As the resolution of ADCs increases from 12 to 16 bits and higher, the difficulty in testing the"nomissing-codes"specification grows proportionately.  To fully guarantee no missing codes for a 16-bit ADC requires testing all 2 16-1 possible output Design by Mark A Shill, Burr-Brown Corp, Tucson, AZ

Two buttons provide safe start -  07/06/00 EDN Design Ideas:  The circuit in Figure 1 provide as a safety interlock that checks the actuation of two pushbuttons before enabling a relay.  When you push both buttons, the circuit actuates the relay.  At that point, you can release one of the switches without the relay' Design by Vincent Himpe, Alcatel Microelectronics, Desselgem, Belgium




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