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Introduction to Magnetic Amplifiers

by:Catech      2023-04-17


A magnetic amplifier is an electrical appliance that uses a ferromagnetic material with nonlinear characteristics to make an iron core, and magnetizes it with DC and AC currents for power conversion. Magnetic amplifiers are mainly used in electrical automatic control systems, such as motor speed regulation, voltage regulation, etc.

●Core composition

The magnetic amplifier enables accurate control of the switching power supply, thereby improving its stability. The magnetic amplifier core can be made of permalloy, ferrite or amorphous or nanocrystalline (also known as ultrafine crystal) materials.

●Advantages of core parts

Amorphous and nanocrystalline soft magnetic materials have high magnetic permeability, high square ratio and ideal high temperature stability, and they are applied to magnetic amplifiers, which can provide unparalleled output regulation accuracy and achieve higher work efficiency , and is therefore favored. In addition to the above characteristics, amorphous and nanocrystalline magnetic cores also have the following advantages:

1) Low saturation permeability; 2) Low coercive force; 3) Small recovery current; 4) Less core loss;

●Working characteristics

Current amplification factor = magnetic amplifier output current/input current; power amplification factor = output load power/input control power. The output current of a simple magnetic amplifier is independent of the polarity of the input current. When the input control current is zero, the output current is not equal to zero, but there is a no-load current lo.

are an important part of the society and they come in handy in any place where there are high current common mode choke in need of nanocrystalline cores for current transformers.
China Amorphous Technology Co., Ltd works hard to enhance continuously our reputation for accessibility, professionalism, performance, and the depth and quality of our long-term consultative relationships with clients.
To properly understand what customers want, when, why and how they want it, China Amorphous Technology Co., Ltd needs to pivot toward sentiment analysis, a burgeoning technology that taps into consumer demand based on natural language processing.
When selecting the best products for customers, we considered not only the amorphous metal ribbon, but also the common mode choke core.
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