Switching Amplifiers

Class D amplifiers use a switching process that adds fast-rising edges at the switching frequency to the audio output signal, presenting a difficult signal for audio analysis. The solution is to precondition the signal before presentation to the analyzer using a low-pass filter that reduces the out-of-band switching components (the fast edges) ...more

Unique all-analog front-end emitting no digital switching noise fiber coupled to DSP instrument console. Voltage and current sensitive, 2 nV max sens, 0.5 Hz-150 kHz, 100dB reserve, Spectral Display, Dual Reference, Dual Harmonic, Tandem Demodulation,, manual and computer control, line power. ...more

IGBT technology amplifier module for the HPA-K, SPA-K and DPA-K amplifiers that power LDS electrodynamic shakers. ...more

The Architect Model 961 sixteen channel amplifier offers discrete zone equalization controls plus an optional Ethernet port that allows designer/installers to monitor the status of various channels and perform channel switching and muting. In addition the Model 961 produces 60 watts per channel into all 16 channels, simultaneously, making this ...more

HSA series is a power amplifier which has high speed, broad band (DC to max.10MHz) , and the capability of supplying high voltage and high power. DC+ / DC- signal is variable continuously with wide output range of maximum 300Vp-p without switching. Furthermore, as Four-quadrant output is possible, source mode(providing a power to load from a p ...more

An inductive proximity sensor comprises an LC oscillating circuit, a signal evaluator, and a switching amplifier. High switching frequencies and high continuous currents characterize many SICK inductive sensors. They are available as DC 2-wire conductors, DC 3-wire conductors, DC 4-wire conductors, AC/DC 2-wire conductors, AC 2-wire conductors and ...more

Designed for use with water-cooled electrodynamic shakers, DPA-K amplifiers offer a maximum power output of 280kVA and provide optimum performance for your vibration test system ...more

SPA-K amplifiers, available for LDS air-cooled vibration test systems from the V830 to the V8, have integral field power and blower power supplies. Featuring an economy mode and low harmonic distortion, they utilise the latest high frequency switching module from LDS. SPA-K amplifiers can be controlled either locally from a control panel with L ...more

The DCX-127 Multifunction Module provides Audio Precision's PC-controlled audio analyzers with an interface toolkit of non-audio functions and interface capabilities that are often required in typical audio test applications. The module contains a 4-1/2 digit DC voltmeter-ohmmeter, two 20-bit programmable DC voltage sources, 21 bits of digital ...more

Behlman's BL-PLUS Series High Power AC Source/ Frequency Converter provides the performance of a linear with all the benefits of a switching amplifier. Instead of relying on large, noisy motor generators for AC power, today's testing facilities are switching to quiet, compact Behlman AC Power frequency converters.  ...more

The Trig-Tek, Inc. Model 216DC Four-Channel Charge Amplifier, is designed to be used where rugged instrumentation is required, such as airborne or field measurements of vibration, shock or acoustics in extreme environments. The unit is comprised of four charge converter channels, with the provision to convert the output of any of the four chan ...more

The Trig-Tek, Inc. Model 41P Portable Calibrator is a highly accurate hand held signal generator designed for remote calibration of vibration instrumentation. Primarily used in Environmental Test Laboratories and Engine Test Cells, the 41P is ideal as a vibration sensor simulator. An extremely stable sinewave oscillator provides the fo ...more

The 60-510 is a high density 1-pole 56 x 33 matrix module controlled via LXI. It has excellent thermal stability and substantially reduced thermal EMF figures when compared to a conventional switching matrix. Typical applications include signal routing in ATE, selecting thermocouple inputs, switching amplifier gain circuits and high accuracy D ...more

The Model 880B is an amplifier which provides a current gain of 10 for use in high current calibration applications. It can be used as a stand alone amplifier to boost current from 1 to 10 ampere sources to the 10 to 100 ampere level. High, two-volt compliance allows for voltage losses in switches and connections, as well as in the ultimate loads, ...more

Mini optical sensors / with separate Amplifier / reflective sensors / diffuse. These reflective light sensors are equiped with powerful optics. This allows switching distances only otherwise possible with considerably larger devices. ...more

3 memories. Able to store voltage, frequency and current high limit setting. Utilize PWM technology with switching amplifier design, the efficiency up to at least 80%. Compact in size and light weight. As small as 2U(8.9cm) height for capacity for 500~2000VA ...more

Now in its third generation, the APTS three-phase protection relay test set is the flagship multipurpose relay test set manufactured by RES. The APTS utilises the latest digital signal processing based waveform synthesis techniques coupled with advanced low-noise switching amplifier technology. ...more

Mini-Optosensors.  6 mm x 6 mm x 46 mm; 50 mm switching distance - infrared or red ...more

Utilize PWM technology with switching amplifier design. 4 groups of digital LED displays - Frequency, Voltage, Current and Power or Power Factor. Programmable high/low limit settings on voltage, frequency, current, power and power factor.  ...more

Mini optical sensors w/ integrated Amplifier retro reflective. M12x1,0mm x 48mm ; 600mm switching distance - red.  ...more

Mini-Optosensors. Ø 5 mm x 45 mm, 50 mm switching distance - infrared or red  ...more

Mini-Optosensors. Ø 5 mm x 45 mm, 50 mm switching distance - infrared or red  ...more

The Model 10ST1G18 is a self contained, forced air cooled, broadband hybrid solid state and traveling wave tube (TWT) microwave amplifier designed for applications where low harmonic content is required in sub-band ranges and where high gain and moderate power output are required. A reliable amplifier system provides a conservative 10 watts mi ...more

C.T. operated meter testing only requires a lightweight phantom load with a maximum output of 10A. There are 4 versions of the Model 462. The Model 462B is the lightest and lowest cost type with 1.0 and 0.5PF switching. The 462E can inject currents in 30º steps from 60º lead to 90º lag. This model can also be fitted, as an option, with 3 digita ...more

Unholtz-Dickie offers a full line of high performance Class D switching power amplifiers. These amplifiers used in UD's new shaker systems, are offered as replacements for older, water-cooled vacuum tube amplifiers or bipolar transistor amplifiers. Many vibration test systems purchased over the past 30+ years include low efficiency, water cool ...more