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A circuit in which magnitude and polarity of the output voltage depend on how an input signal differs from a standard or from another signal.



a device that transforms a change in a control parameter of an electrical signal (at the input) into a change in the voltage (at the output).

In a discriminator the values of a parameter (amplitude, duration, polarity, frequency, and phase) of an input signal are compared to a selected (nominal) value of the parameter of a separate (reference) signal source. As a result of the comparison, a difference (misalignment) voltage arises at the output of the discriminator. Its amplitude and polarity are determined by the degree and sign of deviation of the value of the given parameter of the input signal from the nominal signal.

Discriminators are classified according to the signal parameters being compared. A pulse-height discriminator has a set triggering level and passes only signals with an amplitude higher (lower) than the nominal value. When the input and reference impulse signals coincide in time, the signal appears at the output of a time discriminator constructed as a coincidence circuit and disappears at the output of a discriminator constructed as an anticoincidence circuit. In frequency and phase detection the variations of high-frequency frequency- and phase-modulated oscillations are transformed by the discriminator into amplitude-modulated oscillations, which in most cases are then delivered to a detector. In this case, a reference signal with a fixed initial phase is used in the phase discriminator. Discriminators are used in systems for automatic control of automation and remote-control devices, in frequency and phase detectors of radio receivers, in devices in nuclear physics, and in measurement technology.


Radiopriemnye ustroistva, part 2. Moscow, 1963.
Frolkin, V. T. Impul’snye ustroistva, 2nd ed. Moscow, 1966.
Gonorovskii, I. S. Radiotekhnicheskie tsepi i signaly, part 2. Moscow, 1967.


References in periodicals archive ?
14,15] Two schools of thought had emerged among leaders around the most effective balance between using a clinical discriminators-based, more time-efficient triage tool as opposed to a combination of clinical discriminators and vital signs that takes a little longer.
According to Boeing, the KC-767 obtained 24 positive discriminators in the critical survivability category, including 11 described as "major", outranking the KC-30 which reportedly scored five, none of which were major.
Metaphorical extensions of senses are also more visible here than in the other two dictionaries, because the PWNO sense discriminators can be read as mini-definitions.
In Tables 3 through 6, for each device, all discriminators which had standardized canonical coefficients (beta weights) greater than .
But discriminators are not just "added up" -- they vary greatly in significance.
Proposition 209 does not prevent victims of racial discrimination from obtaining legitimate compensation, nor does it prohibit legitimate punishment of racial discriminators.
One of the major competitive discriminators between Pharma R&D pipelines will be the speed and effectiveness by which they integrate both external and internal data, as well as software tools, within and across domains.
The evaluators found the KC-767 tanker had almost five times as many survivability discriminators as its competitor.
9 percent of all true SVT episodes were shocked, which can be attributed to the programming of SVT discriminators and the accuracy of Medtronic's Enhanced PR LogicTM detection algorithm.
Neurogen's Accelerated Intelligent Drug Discovery (AIDD(TM)) process and its expertise in cellular functional assays are key discriminators in the Company's ability to rapidly and cost effectively screen for active compounds during the drug discovery process.
Filters, Sensors, Chip Multilayer and Chip Dielectric Antennas, RF Diode Switches, Baluns, Isolators, Coaxial Connectors, DC - DC Converters, Traps, Discriminators, Ceramic Capacitors, EMI Filters, Inductors, Piezoelectric Alarms, Ceramic Resonators, Trimming Potentiometers, Trimming Capacitors and Thermistors.
has received an award from the ITT Industries/Northrop Grumman Team to provide Digital Frequency Discriminators and Digital RF Memories in support of the AN/ALQ-165 Airborne Self-Protection Jammer (ASPJ) program.