Is the switch power supply for industrial instrument power good or transformer good?
Switching power supply, the reasons are as follows: 1. switching power supply has EMI circuit, so that the instrument can not be affected by the power grid harmonic, the output is more accurate. 2. switch power supply has lightning protection circuit, can minimize the damage of thunderstorm to instrument. 3. the output voltage of the switching power supply is more stable, and the transformer has no voltage stabilizing function. Please adopt!
I said this does not mean that the switching power supply transformer is good, but each has advantages and disadvantages, for the general instrument, I suggest using the switching power supply of genuine, if is very sensitive to the instrument, or the transformer circuit, otherwise you will find interference.
The guy upstairs wrong, 1: switching power supply unless the resonant switching power supply is more expensive, otherwise it's interference than the general circuit transformer is composed of the bigger, you go to see the high-end audio switching power supply (why not have a dedicated, open loop resonator) 2: the so-called "lightning protection switching power supply the) is only one or two varistor in parallel with the input end of the lightning lightning to see what kind of way, limited function, little difference between this and the transformer, the transformer and the posterior pole voltage stabilizing circuit. The output voltage of the transformer is AC 3, want to get stable DC voltage output circuit must be added, so the voltage is more stable that depends on your components and circuits, switching power supply transformer must be better than not good.
Switch power supply for industrial instrument power supply is good or transformer is good. It needs to be determined according to the use.Switching power supply and transformer power supply have their respective advantages and advantages. In the power supply fluctuations or industrial instrumentation is long-term needs of the power for 24 hours, using a transformer power supply is reliable, because it is very durable, not easy to damage. The switching power supply is cheap, low cost, high power efficiency relative to the transformer power supply. It is not the industrial instrument that needs to work online for a long time, but naturally it is better to use switching power supply.
