Topic
Comparator applications
About: Comparator applications is a research topic. Over the lifetime, 2518 publications have been published within this topic receiving 26639 citations.
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Patent•
31 Jul 1975
TL;DR: In this article, a phase comparator is used to control the phase or frequency output of a voltage controlled oscillator connected with a phase lock loop, this loop being also provided with a branch circuit including a high pass filter or appropriate characteristics.
Abstract: A device for controlling, by means of a phase comparator which receives annput signal, the phase or frequency output of a voltage controlled oscillator connected with the phase comparator in a phase locked loop, this loop being also provided with a branch circuit including a high pass filter or appropriate characteristics.
9 citations
TL;DR: In this article, a double-bridge-type multiplier with two multijunction thermal converters that contain two heaters was used for audio-frequency measurements, and the comparator ensured a high-precision power standard with an AC/DC transfer error of less than 15 p.p.m. in the audio frequency range.
Abstract: A thermal power comparator for audio-frequency measurements is presented. It is essentially a double-bridge-type multiplier that consists of two multijunction thermal converters that contain two heaters. Together with a precision inductive voltage divider and current transformer for extending the voltage and current range, the comparator ensured a high-precision power standard with an AC/DC transfer error of less than 15 p.p.m. in the audio-frequency range. >
9 citations
Patent•
26 Jun 2012TL;DR: In this paper, a power amplifier includes a variable passive element and a comparator, which is connected directly or indirectly to the first terminal of a switch element and serves to increase or reduce a resonant frequency of the amplifier.
Abstract: According to one embodiment, a power amplifier includes a variable passive element and a comparator. The variable passive element is connected directly or indirectly to a first terminal of a switch element and serves to increase or reduce a resonant frequency of the amplifier. The comparator compares a voltage of interest with a reference voltage and outputs a control voltage for the variable passive element based on a difference between the voltage of interest and the reference voltage.
9 citations
Patent•
22 Mar 2010TL;DR: In this article, a discrete-time operational transconductance amplifier (OTA) with large gain and large output signal swing is described, which includes a clocked comparator and an output circuit.
Abstract: A discrete-time operational transconductance amplifier (OTA) with large gain and large output signal swing is described. In an exemplary design, the discrete-time OTA includes a clocked comparator and an output circuit. The clocked comparator receives an input voltage and provides a digital comparator output. The output circuit receives the digital comparator output and provides current pulses. The output circuit detects for changes in the sign of the input voltage based on the digital comparator output and reduces the amplitude of the current pulses when a change in the sign of the input voltage is detected. The output circuit also generates the current pulses to have a polarity that is opposite of the polarity of the input voltage. The discrete-time OTA may be used for switched-capacitor circuits and other applications.
9 citations
Patent•
06 Apr 1988TL;DR: In this article, a power shutdown circuit includes an electronic latch circuit connected in series with a monitored power supply and comparator input and power terminals, and when a monitored signal magnitude crosses a threshold, the comparator provides a control signal which renders the latch nonconductive.
Abstract: A power shutdown circuit includes an electronic latch circuit connected in series with a monitored power supply and comparator input and power terminals. The output terminal of the comparator is coupled to the control terminal of the latch. When a monitored signal magnitude crosses a threshold, the comparator provides a control signal which renders the latch nonconductive. A main switch device also connected to an output of the latch responds to the nonconductive state thereof to remove power from an electrical load.
9 citations