lamp's combination

PF (PowerFactor) power factor the ballast and lamp's combination to the mains input power's effective use, in some place also expression is Watt/VA or COSΦ.Mini Wireless Keyboard Generally speaking inductance ballast high pressure sodium lamp electron ballast's PF is 0.5, even if adjusts after the electric capacity also can only achieve about 0.8, but the electronic ballast usually can achieve 0.95~0.99, its significance lay in you to use fully each tile electricity which the power plant confessed that and has made the remarkable contribution to the environmental protection.

THD (TotalHarmonicDistortion) total harmonic distortion the ballast and the lamp works when the fixed supply voltage, after the lamp achieves the steady work condition, inputs in the supply current sum of the odd harmonic various components.

Is by a series of has according to the Bori leaf definition rectangular wave uses the time but frequency different sine wave superimposition to become together, then the harmonic content is bigger to the input sinusoidal waveform destroys is bigger. In use electron ballast many situations,Patch Cord Manufacturer if the THD value greatly will affect the three-phase AC input median line electric current, because the sine wave is destroyed, the median line electric current will be big, therefore generally we in large-scale use electron ballast time will choose THD to be more appropriate than in 15%-25% between performance prices.

CF (CrestFactor) wave ridge coefficient when fixed supply voltage, ballast and lamp necessary work, when after the lamp achieves the steady work condition. Winds through the tube the electric current condition output current electronic ballast peak value and root-mean-square value ratio CF=PK/rms. Popular speaks the CF value to be smaller,Cable Manufacturer winds through the tube the electric current to be stabler, the tube life is longer.

The IEC /GB's standard is CF≤1.7.
The equipment or the system in the electromagnetic environment can the normal work, and any thing constitution cannot withstand to this environment in electromagnetism harassment ability. Has differently in Europe and America carries out the standard. A.FCC (USAStandardClassA; ClassB) B.CISPR (international electrician committee CISPR15) C.EN55015 (European standard). China will defer to Europe's standard execution. works as the user when the use meet standards ballast, its peripheral electron equipment will not receive the disturbance,electric welding machine manufacturer like electronic accounting machine, radio telephone, and some specialized electronic installation

The electronic ballast may divide into 4 big series 15 varieties:as soon as 1, tows one, as soon as popular and the lamphouse special-purpose electron ballast divides into 20W, 30W, the 40W altogether 6 variety lead wire electron ballast 2, to tow two, popular and the lamphouse special-purpose electron ballast divides into 2 X 20W, 2 X 30W, 2 X 40W altogether 6 variety the 3, ring-like lamps to divide into 22W, 32W with the electronic ballast altogether 2 variety the 4, quartz sterilizing lamp ballast to be suitable for 35-60W altogether 1 variety the note: 20W, 40W aimed at T10, the T12 tube, 18W, 36W aimed at the T8 tube. Sometimes therefore we speak 20W, may also understand is 18W, simultaneously T8 tube's 36W we may also understand that is T10, T12 40W, because their ballast is general.

　The electronic ballast with the city electricity direct rectification, then carries on half bridge to invert, lightens the sunlight tube.哮喘 It does not isolate with the city electricity, is similar to television's hot ledger wall, on high frequency electronic ballast circuit wafer each place charged, the human body contact concentration line (grounding) has receives an electric shock the danger, when the overhaul wants the special attention personal safety. After adding the electricity, is sure not with the hand contact line board on any metal part, especially does not want both hands to take the circuit wafer.

When overhaul unloads the tube, covers from the lampstand two R plastics takes out two circuit wafer A, B, 1-4 welds the filament reed's four wiring, welds on turn the tube two filament pins, directs in the person termination in the city electricity switch SWi and the attaching plug. Joins 5w1 is very essential. When service discovered that does not meet SW1, in peg grafting adds in the electricity process, damages the electronic ballast many times, this is because in the peg grafting process, will often have the situation which will pass many times, breaks, like this will produce the very high peaked pulse voltage puncture vulnerable part.