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[2013-05-30]
Fluorescent starter,Currently a mechanical starter fluorescent lamp, in use for some time, the tube ends blackening phenomenon appears to affect lamp life. The electronic starter for fluorescent lamp starter circuit is determined by the rectifier regulator circuit, self-protection circuit , a timing circuit and starter circuit components. After power on, when the starter circuit received from the timing circuit working after a signal lamp is lit. The utility model, compared with the prior art, with a low failure rate, wide operating voltage range, so that the lamp and long service life.
High-performance electronic starter, fast starter big, small diameter fluorescent lamps, with starter performance, non-contact, long life, fast starter, a characteristic that the light is a kind of practical value new electronic quick starter....
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[2013-05-29]
Fluorescent starter for a variety of fluorescent lamps. Its usefulness is to help light up. Here is the fluorescent lamp voltage is applied after what happened:
1) Fluorescent starter (that is a timed switch) allows current through the end of the filament lamp.
2)The current causes the starter contacts heated and open, thus interrupting current flow. Lamp light.
3) Because glowing fluorescent tubes resistance is very low, so now the use of ballast as a current limiter....
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[2013-05-27]
Core Ballast is making silicon enameled wire wrapped around a core made of such a coil with a core, the instantaneous power failure, it will produce high inductance, added to both ends of the fluorescent tube electrode (filament ) on.
Class B2 fluorescent ballasts:
Power: 18/20W, 36/40W, 58/65W
Voltage: 220V-240V
Frequency: 50/60Hz...
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[2013-05-26]
Electronic fluorescent ballasts can be divided into four major series 15 varieties:
Firstly, one ballast drive a lamp,ordinary type with box-type-specific electronic ballasts into 20W, 30W, 40W total of six varieties, Secondly,one for two, ordinary type with box-type-specific electronic ballast is divided into 2 X 20W, 2 X 30W, 2 X 40W total of six varieties, Third,ring lights with electronic ballasts into 22W, 32W total of two varieties, 4, quartz germicidal lamp ballast for 35-60W of a breed Note: 20W, 40W for T10, T12 tube, it's, 18W, 36W for T8 lamps for the. So sometimes we talk about 20W, can be understood as 18W, 36W tube T8 while we can be understood as T10, T12 of 40W, ballast as they are generic.
The performance and process electronic ballasts:
1, high power factor, power factor> 0.9 ,
2.Lumen factor> 95% ,
3, Working temperature -15 ℃ - +50 ℃
4, the highest temperature 15 ℃
5, the operating voltage range 160VAC-240VAC...
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[2013-05-26]
HPS ballast characteristic curve:
When the high pressure sodium lamp at a constant input voltage continuous operation, the lamp voltage and lamp power change will follow the ballast characteristic curve. Two typical ballast characteristic curve. The curve by measuring the number of characteristic curves with different light lamp voltage and lamp power to obtain, or through an external approach with a lamp, the discharge tube to the cold end temperature change lamp voltage and lamp power to get. When the power supply voltage changes, the characteristic curve is obtained a ballast. At rated supply voltage increases or decreases the impact on the electronic ballasts characteristic curve....
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[2013-05-26]
HPS ballast manufacturing is not complicated, but often because of design, process and selection of materials, the differences in the same specifications from different manufacturers equipped with high pressure sodium lamp ballast, the ballast showing characteristic curves of different shapes ,Poor quality ballasts will cause the lamp during use ultra-load operation, or job instability....
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[2013-05-25]
Electronic ballasts overhaul Step 1. Fluorescent lamps up to failure is not lit, turn on the lights without any reaction. First, measure R0 is blown. RO itself from the insurance role, once the overcurrent will be blown, in order to avoid damage to more components. RO Department received some ballast is 0. 5A fuse. If the RO blown, there must be an overcurrent fault. Replace R05 inch at a place off (see photo), measured with a multimeter Rx10k block resistance across the mains lead should 2Mf above (R1 + R2 series value); swap table pen test, it should be the same. If the two, with a diode rectifier bridge blown; if more than 2Md2, then C1, C2 leakage; if this resistance value in accordance with that request, which can be electrically measuring a, b two points should be a DC voltage of about 300V. But sometimes a power-on blown RO, this is a short-circuit bridge rectifier diode, should be by the side of the amount of D1-D4 positive and negative resistance....
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[2013-05-25]
Fluorescent lamp 20W and 40W aging, the electrician replaced all magnetic ballast to electronic ballasts. But a small part of the electronic ballast arise after installing a different fault, mostly burned component failure, the electronic ballast board burned beyond recognition.
Magnetic ballast is relatively large size and weight, their power consumption, noise. The electronic ballast with low voltage starter, no flicker, no noise, energy efficient, bright lights instantly advantages, electronic ballasts have a broader space for development.
This circuit rectifier filter circuit, a power switch and the drive circuit, the ballast circuit with the filament load of three parts. Composed of various elements of the circuit functions as follows:
① rectifier diode VD1 ~ VD4 and filter capacitor C1, C2 in series form a bridge rectifier and filter circuit, the function is to be filtered by the rectifier 220V AC in C1, C2 ends get unloaded 310V DC voltage, high frequency inverters for the back circuit to provide operating power.
② power transistor VT1, VT2, used as a switch, working in saturation and cut-off state, the switch faster....
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[2013-05-24]
Electronic ballasts have been successfully used with fluorescent lighting systems for many years, largely because of their improved energy performance and dimming capabilities. Electronic ballasts for HID lighting systems have become available only more recently. Initially, electronic HID ballasts were primarily for use with lamps of 175 W or less. But reliable electronic ballasts are now becoming available for use with higher wattages of 150, 250, 400 and even up to 1000 for metal halide and high-pressure sodium HID lighting systems.
Noise. Magnetic ballast produce noise because the metal laminations within them vibrate as the magnetic field changes at the line frequency of 60 times per second. Electronic ballast products are available that operate at both high and low frequencies, but operation is silent because the ballasts don’t have laminations to vibrate. This quality is important in areas such as libraries, concert halls, and retail shops....
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[2013-05-24]
High Intensity Lamps such as the Sodium and Metal Halide lamps that are used in grow lights need a ballast to regulate the power supplied to them. Without a ballast to control the power to the lamp, it would simply draw massive amounts of power and instantly fail. This is why you need to match your 600 Watt Lamp with a 600 Watt HPS Ballast – so that the right level of power is supplied to the lamp and that the lamp itself is not damaged.
high-intensity discharge (HPS) high pressure sodium lamps require a ballast to limit current to the electrodes. Ballasts also provide the correct voltage for starting and restarting, and they adjust current to maintain light color and intensity over time. All ballasts suffer internal losses—typically 5 to 30 percent of the lamp wattage—that should be included in any calculation of potential savings, especially when switching from nonballasted sources such as incandescent lamps. Two main types of ballasts are now available: the newer electronic ballasts and the more common magnetic ballast....