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[2013-03-01]
Self-excited electrodeless fluorescent high frequency electronic ballasts Having a trigger circuit, the power amplification circuit, the oscillation and the output circuit, the feedback transformer, the trigger circuit having a power supply input, trigger circuit control terminal, and the trigger circuit output terminal, said power amplifier circuit having a power amplification circuit input terminal and the power amplification circuit the output terminal....
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[2013-03-01]
Self-oscillating electronicballasts fluorescent lamp preheat-start circuit, including fluorescent tubes, half-bridge driver circuit, in series in the fluorescent light tubes and ballast inductance between the half-bridge driver circuit and parallel in the fluorescent tubes at both ends of the filamentresonant capacitor, the resonant capacitor are connected in series by one end of the filament of the fluorescent lamp the ballast inductor...
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[2013-03-01]
Magnetic Ballast easy starter (start) lights, fluorescent tubes easily shorten the life of aging. Ballast inductance is too small, the current is too large by both ends of the fluorescent tube voltage is too high. The ballast power than fluorescent tube power is too small, the starter the starter is difficult or impossible. Because of the ballast inductance is too large, too small by the current, both ends of the low voltage fluorescent tubes. Ballast lamp power than is short than good current life....
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[2013-02-28]
Fluorescent lamp ballasts, the ballast coil windings, relays, current limiting resistor and starter relay winding and starter series circuit with fluorescent tubes and relays normally closed contacts in series circuit in parallel,the parallel circuit of the ballast primary coil winding is connected to the power supply, the secondary coil winding and current limiting resistor in series, normally open relay contacts in series circuit with the primary coil windings and fluorescent series circuit in parallel. Generated in the secondary coil windings high voltage is applied to the tube ends, directly stimulate lamp strike and light-emitting, still lit the lamp filament has broken, so to extend the life of the lamp, and a simple structure, reliable performance ....
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[2013-02-28]
Capacitive fluorescent ballasts:Including resistors, capacitors, diodes and relays, 220 VAC input termination, then and then after a resistor and a capacitor in series a diode across the relay normally closed contact with the current zero line and relay the input of the phase, out of the relay terminal and the diode other end connected to fluorescent lamps. The utility model has a few parts of the circuit constituting more than 30% energy saving, high power factor, to facilitate the work, you can work at low voltage, high reliability, long lamp life, good benefits, etc.....
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[2013-02-28]
The electronic ballast, which is on the basis of the original circuit additional to reduce the harmonic distortion circuit and an abnormal state of the protection circuit, the former is implemented by a capacitor, resistor, diode network composed of the latter advantage in the resonant circuit chokeinduction coil coupled circle on the abnormal state signal feedback composed mainly by the switching transistor and double contact relay circuit; addition to use of the induction coil by 555 integrated circuit and relay networka preheat circuit, so that the electronic ballasts model has a reasonable structure, safe and reliable, high power factor, fluorescent lamp life can be extended....
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[2013-02-28]
The cold cathode fluorescent lamp was pressurized high frequency electronic ballasts, which is characterized by the AC rectifier circuit, a high frequency inverter circuit, and the booster circuit cascade boost circuit so that the ballast has a starting voltage and operating voltage of the higher outputmatch and output impedance is adjustable with cold cathode fluorescent lamp. The present invention can promote long life, high reliability, and practical application of high-power cold cathode fluorescent lamp....
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[2013-02-27]
Several energy-saving lighting fixtures white color dysprosium lamp overcome low mercury lighting efficiency, sodium lamp color rendering index a daylight color light source, the color rendering index of 80 or more, more than 75 lm / W luminous efficiency, color temperature of 6000K. Advantages of long life, high luminous efficiency, close Daylight saving effect is obvious, is the fourth-generation light source of the world today. High pressure sodium lighting fixtures efficiency up to 90-100 lm / W, respectively, 2.5 and 7 times higher than the mercury lamp and incandescent light efficiency....
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[2013-02-27]
fluorescent magnetic ballasts operating frequency 50HZ, operating frequency electronic ballasts, fluorescent 30-50HZ practicecase proved fluorescent work at this frequency, brightness than the work in 50HZ increased about 14%, i.e. to achieve the same light output of the fluorescent lamp, the electronic ballast may be a smaller power output to the fluorescent. ② traditional inductive ballast electronic ballast itself consumes power....
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[2013-02-27]
High pressure sodium floodlights characteristics:
The lamp body is molded from aluminum high pressure die casting, lightweight structure firmly corrosion of high purity aluminum reflector, symmetrical or asymmetrical light distribution system.
2 high-strength tempered glass, high temperature of 250 degrees or more, high transmittance, impact resistance.
3. Novel aluminum buckle, installation and easy maintenance, protection class higher.
Applicable to a variety of architectural exterior lighting, small and medium-sized playground and other appropriate lighting places.
5. Protection: IP65...
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