I have a strong LED flashlight, LED Bags Lights a finger that kind of big, not bright, open to see, the current flows from the positive, through the inductor coil, after the transistor, out of 2, parallel to a crystal diode and a Do not know what components, circuit merging, LED Bags Lights and then through the LED lights, composed of loops.
LED light flashlight are generally rechargeable, light source for the LED light-emitting diodes, the circuit generally by the current limiting capacitor, LED Bags Lights rectifier diodes, charging indicator light charging circuit, current limiting capacitor used to limit the charging current, usually 1 microfarads, 400V , LED Bags Lights The charging current is generally about 100mA. Battery is generally 4V, 1AH lead-acid batteries, lamp beads by the LED light-emitting diodes, switches and current limiting resistor components. LED for the light source, the general working voltage of 3V, 30mA, current limiting resistor each LED one, and LED in series, used to limit the LED current, LED Bags Lights so that the maximum LED current of 30mA, the switch is generally third gear, the first file Stop, LED Bags Lights the second gear light on the general light, the third gear for the whole light.
LED is a new type of flashlight, since the advent of white LED, it has been introduced, LED Bags Lights but the initial time due to low brightness white LED, high cost, it can be said that such products have been in the "laboratory stage", the price of ordinary people no one Dare to ask, some military products have a small amount of promotion. With the increase in brightness of white LED, cost reduction, LED Bags Lights and gradually go out as the ranks of the public. The increase in brightness is mainly due to the emergence of ITO, the brightness almost doubled, LED Bags Lights and the price, due to the improvement of production technology, from the first four dollars down to the current 4 cents a cheap 1 cents below Many. Now the popular flashlight on the market with 9 or 12 diameter 5mm LED, the connection is parallel, 3 7 batteries. Or a 1W or 3W or 5W high power LED. 1W high power LED single device prices ranging from 15-35, LED Bags Lights the initial launch of lumileds 1W high power LED seems to sell 4-5 dollars.
Semiconductor lighting is known as the fourth generation of lighting, can be said to be a replacement product,LED Bags Lights cost much higher than ordinary light bulbs, but long life In terms of energy saving, ordinary light bulbs do not know how much, with LED flashlight about 1W-5W range, LED Bags Lights on the advantages of energy-saving, then put aside the flashlight, LED current market-oriented products in terms of energy consumption between incandescent and fluorescent lamps. But absolutely environmentally friendly, LED Bags Lights non-polluting. Long life, is recognized by the advantages of LED, but the market can be said that the flashlight with LED can be said to be good and bad.
LED flashlight another fatal shortcomings (ordinary people are not easy to find the shortcomings), color rendering low! In the LED display under the color of the incandescent lamp is not true, which from the spectral distribution of the analysis, are technical issues, without repeat. There is a drawback, LED Bags Lights the spot, due to the white LED manufacturing process defects with the reflective cup or lens with the error, likely to cause "yellow circle" problem. Some manufacturers do not consider the quality of the device and with the problem, LED Bags Lights completely copy the other manufacturers of products, LED Bags Lights the poor quality of the LED flashlight flooding the market, seriously damaged the reputation of LED.