Changchun city street lamp1

Unlike general street lamp, solar street lamps it only use solar battery as power source, because the current solar cell components of capital also compare high, so in order to drop system capital, it is necessary to apply efficient light source. LED is a kind of power can be

is different from general street lamp, solar street lamps it chooses the solar battery as the only source of power, because the current solar cell components of capital also compare high, so in order to drop system capital, it is necessary to apply efficient light source. LED is a semiconductor light-emitting devices of electric energy can be transformed to visible light, LED skills in recent years there has been a crucial break, its price performance ratio also have great progress, with the traditional street lamp light compare with the LED light source with high luminous efficiency, near twice the incandescent lamp, long life, can reach more than 105 h; Traditional light compare with big power consumption, and most of the work under high pressure, using the booster inverter link and power utilization, and LED to choose low voltage dc power supply, safe and low light source control, regulate light and shade, frequently switch is possible.

system are generally small photovoltaic system, solar street lamps, the world bank's standard photovoltaic system control device from the power flow is small than the current 1% extra homework, paints and manipulation of the detector circuit with low power consumption equipment selection is very important. In use in the solar street light is composed of integrated operational voltage compared as control circuit, the circuit is composed of hardware of the control system, and briefly firmly, convenience, low capital and protecting circuit itself is also very low power consumption, matching is a very good circuit.

the key is on the battery charge and discharge characteristics of the circuit depicted a match good voltage with poor, equipment selection to secure, together, coupled with the charge and discharge status indicator circuit, composed of light emitting diode, has become a practical function of the control circuit and a battery over discharge, prevention of charging function. System with direct coupling method of charging and discharging control circuit, based on features of LED with battery matching, can achieve adaptive power, in a few months of solar irradiation for battery charging condition generally lower, the battery discharge voltage too low, which is less homework load current, small power, system can work a long time. Conversely when solar irradiation compared enough, load current is bigger, big power, also will be more bright.