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In addition to ServoTrends (Galil's quarterly news letter), Galil also provides What's New At Galil. This informational letter will keep you up to date on everything Galil on a monthly basis! It will contain information about our new and exciting products, enhancements to existing products, training announcements, and technical motion control articles. If you are already registered for the ServoTrends news letter you will be receiving the What's New At Galil news letter as well. If not register now to receive your free copy via email!

[White Paper] Transconductance vs Voltage Amplifiers

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      The purpose of an amplifier in a motion control system is to provide a controlled amount of current or voltage to a motor based on a command signal from the motion controller. This is done by a current (transconductance) or voltage amplifier. Each of these two type of amplifiers has benefits and drawbacks which must be considered in order to choose the correct structure for a given motion control application. This paper will examine the similarities and differences between the two main types of switching amplifiers by addressing three key areas: performance, safety, and efficiency.


Figure 1: Typical H-Bridge Circuit of Switching Amplifier