Can someone explain how this transistor comparator works?
2015年4月10日 · It is virtually identical to the proposed circuit - a RC network is inserted in each base input line to provide filtering and the ability to handle an input level range of +/- 200 VAC. It worked. There are several ways to look at the circuit.
Comparators are used to differentiate between two different signal levels. For example, a comparator may differentiate between an over temperature and normal temperature condition. Noise or signal variation at the comparison threshold will cause multiple transitions.
#412 BJT Comparator - LEAP
#412 BJT Comparator. Investigating and testing a comparator design with discrete components. Notes. Comparators are used to compare two voltages, with a binary output (high or low). These days, it is common to see OpAmps used as general purpose comparators.
Comparator dc specifications are similar to those of op amps: input offset voltage, input bias current, offset and drift, common-mode input range, gain, CMR, and PSR. Standard logic-related dc, timing, and interface specs are associated with the comparator outputs.
Simple discrete comparator for relatively low speeds.
2008年1月5日 · I would like to build a simple comparator out of discrete components. The purpose is to compare a voltage of 0-5v on it's one input, to a voltage of 0-5v on it's other input and produce a zero or one at the output (0/5v). I prefer an open collector output, with an emitter connected to the ground. Single VCC of 5v.
•BJT (bipolar junction transistor): Current-driven amplifier •Two types: NPN and PNP •Base controls current from emitter to collector NPN and PNP BJTs NPN I-V characteristics
Help understanding BJT voltage comparator - Electrical …
The Q5/Q6 circuit is called a current mirror; Q5 will gobble up all the current it's offered and Q6 will be willing to gobble up either as much current as is flowing into Q5, or as much current as is necessary to pull its collector to ground.
To survey the transistor level comparator topology, the sub circuit designed for usage in high speed and low power analog to digital converters. As the 130 nM technology allows, the decision time of the comparator appears 140 pico Seconds on …
BJT Schmitt Trigger - ElectroSchematics.com
2023年6月29日 · A Schmitt trigger is a comparator circuit with hysteresis. Its output swings high when the input rises above an upper threshold, and swings low when the input falls below a lower threshold. The ensuing hysteresis negates the impact …
BJT Comparator - EveryCircuit
EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia.
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