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[2013-03-10]
Electronic ballasts with overload protection, power part series thermistors have a positive temperature system, high voltage network and other causes electronic ballast working current increases when the load overload, overload operation, a positive temperature coefficient of thermalsensitive resistor temperature increases, the resistance increases, circuit breaker protection. Its protective reliable, simple structure, low cost, easy to universal application....
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[2013-03-10]
Automatic control, sound lamp holders increase in ordinary people electric light bulbs, lamp Central only one time base of integrated circuits and other components of the sound and light detection limit circuit components board off automatically in order to achieve during the day and at night by the sound of footsteps, hit applause or speak the sound automatically open, lit a few seconds and then turn off automatically purposes....
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[2013-03-10]
The high-pressure discharge lamp electronic ballasts, including the resistance to electromagnetic interference filter circuit, the bridge rectifier circuit, the active power correction circuit, the ignition circuit, the lamp current, the voltage detection circuit, and the temperature and the failure detection circuit, by the micro-processing controller and DC/ DC regulator circuit consisting of power and current pulse width modulation controller, and by a micro controller and the low-frequency square wave converter circuit consisting of the low-frequency square wave full bridge converter....
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[2013-03-09]
The magnetic ballasts into a dedicated electronic ballasts system components. The kind of the magnetic ballast system converts the dedicated components of the electronic ballast system can be directly inserted in the T8 ~ T12 straight tube lamps G8 lampholder, wherein said specialized components by the fixed bracket, placed special electronic ballasts, mounting bracket installed on the conversion interface of the two ends of the mounting bracket, aluminum reflectors pass mask, and the conversion interface G8 plug from lateral and medial composition of G5 lampholders...
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[2013-03-09]
The dimming ballasts, there are at least two of the iron core of the magnetic circuit on the main magnetic flux path is wound on the primary winding, on the side of the iron core of the magnetic circuit on the regulating winding around the regulating winding and is connected to the control circuit, the control circuitcontrolling the phase of the regulating winding and the induced current, which is characterized by: the edge of the magnetic flux of the magnetic circuit is less than the magnetic flux of the main magnetic flux path....
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[2013-03-09]
Low frequency AC main power supply to control the brightness of the fluorescent lamp, wherein the lamp has a related, provide better high-frequency power source, the electronic ballasts, the ballast includes a microprocessor, the microprocessor control is supplied to the lamp through the ballast electricitythe frequency of the periodic variation of the frequency of the supply to the lamp by starting and the end of the cycle changes, so that the frequency of the electric power when the desired luminance is reached in accordance with the expectations of the operator changes....
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[2013-03-09]
Electronic ballasts common inductor, belonging to an electronic component, and applied to the electronic ballast, especially an adjustable inductance, the inductor common to the various power fluorescent lamp. The common inductor of the electronic ballast of the present invention, by a magnetic core and a coil wound on the core composition, wherein the coil has two or more tap points, a different tap point produce different inductance with the corresponding fluorescent characteristics match....
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[2013-03-08]
High pressure sodium lamp electronic ballasts and metal halidelamp electronic ballasts, which comprises a half-bridge inverter circuit, the bi-directional self-auxiliary power supply circuit, the power output circuit, further comprising a full bridge rectifier circuit and the high-frequency filter circuit, a power factor correction circuit, abnormal protectioncircuit, pulse trigger circuit. The entire circuit to achieve low power instead of high-power, low-cost instead of high-priced....
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[2013-03-08]
Electronic ballasts, including successively connected filter circuit, the bridge rectifier circuit, the power factor correction circuit, the high frequency conversion circuit, and a starting circuit, further comprising a low-voltage DC power supply and pulse generating and drive circuit; said pulse generating anddrive circuit have full-bridge drive as well as four switch accelerator T11-T14; switch accelerator T11-T14 the input end of each connection consisting of resistor and capacitor in parallel current limiting acceleration circuit, each limited flow acceleration circuit with full bridge driver is the corresponding signalThe output end of the connection....
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[2013-03-08]
High pressure Sodium lamps ignitors automatic protection function. The hps ignitor pulse to continue to impact the high pressure sodium lamp damaged hps ballast and ignitor, the trigger soon damage. The utility model overcome this drawback, the effective protection of the trigger when the open circuit of the high pressure sodium ballasts...
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