What are the common driving power of led industrial and mining lamps?
A IC or IC is used to distribute voltage, the electronic component is few, the power factor and the efficiency of the power supply are very high, the electrolytic capacitor is not needed, the service life is long, and the cost is low. The disadvantage is that the output of high voltage non isolation, there are stroboscopic, requiring the shell to do an electric shock isolation protection. The market claims that no (go) electrolytic capacitors, ultra long life, are using linear IC power supply. IC power supply has the advantages of high reliability, high efficiency and low cost. It is the ideal LED power supply in the future.
The transformer is used to change the high voltage to low voltage, and the rectifier and filter are used to output the stable low-voltage direct current. The switch constant current source is divided into isolated power supply and non isolated power supply. Isolation is the separation of high and low voltage output, and the safety is very high, so the insulation requirement of the shell is not high.
By using a capacitor through the charge discharge to drive current, simple circuit, low cost, but the performance is poor, poor stability, voltage fluctuation and easy to burn LED, while the output voltage of non isolation insulation protective shell. Low power factor, short life, generally only suitable for economical small power products (less than 5W).
