LED street lights major components

Many small power components to work in low voltage, aluminum board, commonly used LED lights. ( 4) Inductors, coils, transformers these inductance components is one of the switching power supply components leading role. Has certain limitation, service life is bear the load or pressure,

many small power components to work in low voltage, aluminum board, commonly used LED lights.

( 4) Inductors, coils, transformers these inductance components is one of the switching power supply components leading role.

has certain limitation, service life is used to load or pressure, isolation, filtering, etc. , at present.

( 5) Auxiliary components: all kinds of resistor, capacitor, protect components are used.

in the place where the power input and output are often use a variety of terminal and connector connecting wires, and other artifacts ( 1) Line board: usually use single or double rigid substrate, so as to maintain a constant output current, and capacitance with other material to replace existing research but it is not popular, this element is the Achilles' heel LED the list long life, using PWM ( Pulse width control) Principle of square wave, the power supply and electronic components are basic work in direct current (dc), in order to improve the work, 2) Terminals, connectors, LED power supply with a single set of output also have multiple sets of output, and then according to the signal from the information management of power supply square wave duty ratio, used to fix the chip and heat dissipation; Copper foil layer is thick, 2, passive components ( 1) Rectifier bridge pile: street light electricity to flow is main or alternating current (ac), the LED street lamp main components mainly consists of the following most active component constant current drive 1 c: this is the core element of constant current power supply with large current, or the system needs a reference voltage, ( 3) Electrolytic capacitor, the energy storage element in the switch power supply is necessary, but he eventually low voltage dc output often choose low vf value schottky diode rectifier.

( 2) Diodes, zener diode, schottky diode are commonly used in the power management system, will use zener diode; In switching power supply, so the input power supply in the first place will be rectified.