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- Infrared illuminator board plate for CCTV CCD security camera
- Great performance without much energy consume
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- Brand new and high quality
- Easy to clean and do not rust
- IR Wavelength: 850nm
- IR Distance: 80-110m
- Working Voltage: DC12V
- Working Consumption: 820ma
- Infrared Wick: 40μ / 14μ / 12μ
- Number of IR Lamp: 5 pcs Φ29 lamp cup+10 pcs Φ8+16 pcs Φ5
- Built-in auto protection circuit against damaging the illuminator board plate by high voltage
- With accurate design
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- 1 x CCTV Camera Illuminator Board Plate
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For customization, please consider carefully before ordering.Because we do not accept return and replacement.
|Unit Price||USD$ 26.26||USD$ 25.27||USD$ 24.28||USD$ 22.96|
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• If the order has not been shipped; please contact DinoDirect Live Support for order cancellation.You will get your refund within 24 hours.
• If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Please contact our Live Support to inform that.
• Please contact Live Chat or click here to learn more return policy.
- How Can I Measure LED Power Output?
The easiest way to measure total power output is to position the LED very near to a large photodetector. You should be able to get large area photodiodes from: Vactec, EG&G, Hammamatsu, IPI Centronic, Optodiode, Silonix, among others. The last one is a Canadian co. Solar cells OK, but you should probably do a rough calibration. Here's one way to do it: Noonday sun at your latitude irradiates the surface of the earth with about 800 Watts/sq-m. This is equivalent to 800/10,000 = 80mW/sq-cm. Since Si efficacy for sunlight is about 0.5Amps/Watt, you should get around 40milliAmps for each square cm of solar cell. Supposing that you get a smaller value, then you can assume that your particular solar cell is less sensitive than 0.5A/W and calculate a calibration value appropriately.
- Where Can I Find Really Powerful Green LEDs?
You are liable to be disappointed about green LED output power. Since the human visual system is so sensitive to green, high radiance green LEDs haven't been much of a priority. Of course, some are brighter than others. If you're trying to achieve high visual brightness, have a look at units from Stanley, Sharp, Toshiba, all of whom have 'extra super bright' greens in the 'true green' and 'yellow green' parts of the spectrum. If you're generating a beam to be detected by Si photodetector, you'll get better coupling with yellow-green types from Stanley and HP. In any case, choosing a part with a narrow coverage angle will give higher intensity by concentrating the power.
- How Hard Can I Drive LEDs?
If you actually need 50% duty factor, you will find yourself limited to just double the rated continuous current for the LED, usually about 50mA. For best results, get an AlGaAs IR LED with as much directionality (narrow beam) as you can tolerate. At 100mA, it will drop about 1.5Volts, so choose limiting resistance accordingly or use a current source (Voltage level drives NPN base, emitter resistor sets current).
Contrary to what others have said, you can easily get 50% df from a CMOS 555. Just connect timing capacitor from 2,6 to ground, and connect a timing resistor from 3 to 2,6. Use pin 7 (open drain FET) to drive the load. The C555 makes a Schmitt oscillator this way. Don't forget to use bypass capacitor across pins 1 and 8.
If you can operate with less than 50% DF, you can jack the peak current up proportional to reduction in DF, but don't try to go past about 2 Amps, since the wirebond in most IR LEDs can't handle more. In fact, some will fail at significantly lower currents. The most fragile LEDs tend to be the ultra efficient visible units. A few IR units are rugged enough to handle about 10Amps peak.