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From Galil Motion Control
Traditionally, power amplifiers for servo motors have been designed with continuous components. Such amplifiers, also known as drivers, achieve fast response and excellent performance. In recent years, we have seen the growth of digital amplifiers. These devices include a microprocessor that performs such functions as closing the current loop, closing the velocity loop as necessary, performing commutation, changing the amplifier parameters, and performing diagnostics. The main benefits of the digital drive include Products & Services
Operational transconductance amplifiers (OTA) are devices that convert an input voltage to an output current. They are primarily voltage-to-current amplifiers.
Isolation amplifiers electrically isolate input and output signals, often by inductive couplings. Isolation amplifiers, or iso-amps as they are sometimes called, may be used to protect components from potentially dangerous voltages or to amplify low-level analog signals in applications with multiple channels.
Power amplifiers deliver a specific amount of AC power to a load. They are used in audio frequency and radio frequency applications.
Instrumentation amplifiers are differential amplifiers that have been optimized for use with DC signals. They are characterized by high gain, high common mode rejection ratio (CMRR), and high input impedance.
RF waveguide amplifiers accept a varying input signal and produce an output signal that varies in the same way, but with a larger amplitude.
Product Announcements
Topics of Interest
Operational amplifiers (op amps) are as prolific in analog circuits as salt and pepper is on food. They are sprinkled throughout the sensor data acquisition system, performing a variety of functions.
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M.S. Kennedy has an extensive line of standard product amplifiers as well as many industry replacement amplifiers. We offer a wide variety of amplifiers for use in many different applications. Our...
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Detector log video amplifiers (DLVA) are used to amplify or measure signals with a wide dynamic range and wide broadband. These signals cannot be handled with linear amplifiers without adding...
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One of the first things we have to know is that electronics can be broadly classified into two groups, viz. analog electronics and digital electronics. Analog electronics deals with things that are...
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The current thinking in motion control these days is "digital". Computer generated movement routines, encoder feedback, PWM amplifiers, stepper motors, etc. Digital technology has brought...
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Technical Articles
When Choosing Between Analog or Digital Amplifiers, Consider a Hybrid (.pdf)
- Machine and Motion Controllers
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