Choose any delivered 380V to 9V power adapter and transfer wiring, on the one hand, there must be 380V power socket on the spot, the application is not convenient; In addition, the quality of the switching power supply and the reliability of the connection are very critical, and you can see that each 9V adapter connection may be unreliable. Electrical symbol for signal isolators.

For such products as signal converters, we generally choose the power supply working voltage is 20~35VDC, so that we can use the power transformer in the control box to supply power smoothly. In addition, the signal isolator uses screws to tighten the connection to ensure the reliability of the power supply connection.

2. Internal warming

This product is purchased, the internal ironing device 78L05 temperature rises 65℃ when everything is working normally at normal temperature. If installed in the cabinet body with poor heat discharge, it may be destroyed within a year of application, which has a very big hidden danger to the reliability and sustainability of production.

A key effect of the signal isolator is to continuously optimize the software interference signal problem, in order to ensure the long-term smooth operation, so the signal isolator can be long-term reliable work is also necessary to take into account, we will generally choose the use of load allocation, power consumption, ultra-low temperature rise technology products.

The signal isolator produced by a good manufacturer can be controlled within 20 ° C for a large temperature rise, and the stable work of the internal components and the entire equipment for ten years is not a dream. Electrical symbol for signal isolators.

3. Preventive awareness work ability

In addition to the signal isolator to suppress the electromagnetic interference in the data signal loop, its own anti-interference is also necessary to consider, the idea of the signal isolator itself in the interference signal can not all work normally, how to give the loop to show excellent impact suppression maintenance? Therefore, we can see whether the signal isolator inside the port number is a surge, electrostatic induction, transmission and other EMC maintenance devices.

For example, when the TVS diode of the port number can withstand the impact of the instantaneous efficiency energy on both sides, it changes the characteristic impedance value between the two sides from a high characteristic impedance to a low characteristic impedance at a ps level rate, so as to digest and absorb a instantaneous large current flow, and clamp its two DC voltages on a predetermined standard value. Thus, the high-precision components behind the maintenance will not be affected by the transient high-pressure peak single pulse. Take a good look at the product you bought in the input, output and switching power port number is not TVS maintenance, in the case of large power machine equipment start and stop caused by the pulse current is likely to break it.

4. Warranty period

The warranty period is the quality assurance of the product, but also the service ability of the manufacturer to reflect, generally dare to publicize and plan the long warranty period of the manufacturer, all have key technologies and colorful on-the-spot work experience, in the product design scheme, testing, production and manufacturing, pre-sales service, after-sales service and other levels of overall strength is strong, we can give priority to take into account the product of this manufacturer. Electrical symbol for signal isolators.