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[2013-03-04]
Electronic ballasts protection circuit when the lamp end of life. It is enclosed in the first comparator, the second comparator and for lamp automatically restart the MOS transistor, said first comparator is the positive terminal of sampling the negative half cycle of the lamp voltage, and its negative terminal as a reference point...
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[2013-03-04]
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[2013-03-04]
Intelligent dimmable electronic ballasts includes a control circuit, the control circuit input terminal and connected to an external circuit, the output terminal of the control circuit via the RC oscillator circuit with the half-bridge inverter drive control circuit is connected to the input terminal of the AC power supply through the power supply circuit andthe half-bridge inverter drive control circuit is connected to the input terminal of the half-bridge inverter output terminal of the drive control circuit and the high-pressure gas discharge lamp HID-linked, high-pressure gas discharge lamp HID connected to the amplifying circuit and control circuit through the acquisition....
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[2013-03-03]
Sodium lamps ignitor automatic protection function. The original ignitor pulse to continue to impact the high pressure sodium lamp damaged ballast and trigger, 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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[2013-03-03]
The intelligent dimming high pressure sodium electronic ballasts, mainly by the housing and electrical components. The electrical component is included in the setting and control circuit of the ballast circuit and dimming. Mainly provided with the dimming setting and control circuit, central controller CPU, Zener diode, protection diodes, voltage dividing resistors, and the output control transistor. The central controller CPU has a pre-set time and output control transistor work in normal working condition...
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[2013-03-03]
Energy saving high pressure sodium electronic ballasts are a ballast electronic products. By EMI filter circuit, the rectifier filter circuit, drive circuit, power correction circuit, soft-start circuit, over-current protection circuit, trigger circuit is composed of seven parts. The model is: constant power output, energy-saving features; greatly improve the power factor above 0.99, the utilization of electrical energy; using a soft-start circuit to avoid high-pressure sodium lamps start flashing instant, high pressure sodium life....
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[2013-03-02]
The timing inductor-capacitor energy saving ballasts, including capacitors, magneticballast working voltage drop to meet the following relationship; buck ≤ 13% ≤ the (ballast buck - lights buck) / lights175%, said capacitor consists of at least two capacitors (C), (C1) parallel composition....
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[2013-03-02]
The Capacitive high pressure sodium ballasts,means a power conservation. Main hps ballast capacitor, pulse transformer, trigger circuit constituted. Ballast capacitor, pulse transformer coil connected to a 220V AC power supply, sodium lamp series, trigger circuit to pulse to pulse transformer coil current, coil induction high voltage set to sodium lamp starter after starter ballast capacitor stable sodium lamp operating current. The high pressure sodium ballast device is a capacitive load, to improve power factor compensation, and their power consumption is very small, with power-saving features....
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[2013-03-01]
Preheating the cathode HID ballasts, primarily by a laminated core, the winding in the laminated core of the insulating frame inductance coil, placed on the side of the laminated core, and with the one end of the inductance coilthe capacitance of the cable connection, placed on the other side of the laminated core non-contact starter and flame retardant plastic cover. As a result of the novel structure of the L-C oscillator circuit and non-contact starter...
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[2013-03-01]
Anti-fire ballasts, including ballast core, said ballast surface of the core coated with fireproof layer, the ballast core lead sealing piercing fire outer layer. Said fire protection layer for a sealed casing, and connected with said lead terminals in the housing peripheral. Said fire protection layer made of a flame-retardant insulation material. The new fire layer can be completely cut off from the ballast core (inductance coils or electronic devices) contact with the outside world, not only to prevent internal open flame caused by external fire, and also prevent the high temperature of the outside of the internal components, greatly improving the fire safety reliability....
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