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The aim of isolators in electrical engineering is to protect end users and expensive electronic systems and components from high voltages by galvanic isolation.
It is to ensure that subsystems with large differences in ground potential can communicate effectively and sensitive signals are protected from corruption by electrical interference (noise).
Isolators allow a control or data signal to be coupled across an isolation barrier without current flowing through it.
Signals are transmitted, but interference is blocked.

An optocoupler / a Solid State Relay (SSR) is an electronic device which is used to transmit a signal between two isolated circuits.
Optocouplers / SSRs consist of an optical transmitter, typically an infrared light emitting diode (IR-LED), and an optical receiver, for example a phototransistor / MOSFET / triac, which are both separated in a housing through a transparent insulating material.
Depending on the type you are used for digital or analog signal transmission.

Isolation amplifiers have one or more isolated signal path(s) for amplification or conversion of analogue current and voltage signals and, when equipped with their own power supply, also supply paths for the input and output circuits, at least one of which is also isolated.

Digital isolators are integrated devices used to isolate digital signals and transfer digital communication across an isolation barrier.

Cosmo Electronics Corporation was established in 1981 in Taipei, Taiwan. Through its relentless devotion to research and development, Cosmo has expanded its product lines to include Solid State Relays (SSR), PhotoMOS Relays and Photo Couplers. These products are used in a variety field of applications. Cosmo has its own in-house R&D team capable of designing relay or photo coupler products in conformity with customer's specifications.
CT Micro International Corporation is a Customer Oriented and Technology Driven Company. It is dedicated to the design, marketing and sales of Optoelectronics and Discrete MOSFET products. With more than 15 years of products knowledge, CT Micro can help to realize any design right from component selection up to actual finished product implementation with minimum effort and time.
Excel Cell Electronic Co. Ltd. (ECE) engages in the design, manufacture, and sale of electromechanical components. The company was founded in 1981 and is based in Taichung, Taiwan.
ECE mainly offers various switches, optical relays like PhotoMOS relays & solid state relays, reed relays, mechanical relays and connectors.
MORNSUN Guangzhou Science & Technology Co., Ltd., a national high-tech enterprise headquartered in China, has grown into a leading vertical industrial power supply manufacturer.
keeping the spirit of being forerunner, MORNSUN specializes in magnetic isolation technology and product research and application, and manufactures high-quality products include AC/DC converter, DC/DC converter, adapter, isolation transmitter, IGBT driver and LED driver , etc. most of which got UL, CE, CSA, CB and DoE Level VI certification.
As an IPR Demonstration Enterprises in Guangdong, MORNSUN is one of few power supply manufactures that have its own independent Intellectual Property Rights of integrated circuit, innovative transformer structure, assembly system and appearance design. Over the past 20 years, MORNSUN applied 300+ patents for inventions. Guided by the service principle of “trust worthy”, MORNSUN established its subsidiaries in America and Germany, expanded its distribution network in 40+ countries and operated sample inventory in Germany, North America, India, Japan and others to offer the best service to local clients in those locations.
As part of society, MORNSUN focuses on teamwork and persistent hard work, and it’s deeply devoted to her role as a responsible corporate citizen around the world. Based on it, MORNSUN holds the core value of “creating value" for all clients and developing our business to repay the society” and takes it as her mission to make contribution to the development of society and progress of the humankind by pursuing excellence unremittingly.
MORNSUN is marching a new silk road like a camel without any stop to realize new brilliant.

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Mike Kiraly
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