intelligent preheat start ptc thermistor for electronic ballast and energy-九游会下载

intelligent preheat start ptc thermistor for electronic ballast and energy-saving lamp mz12 series

(combination of ptc thermistor and varistor,no temperature-increasing or power-consuming after preheating) 

ptc thermistor brief introduction:

mz12 series ptc thermistor is a new energy-saving and intelligent preheat starting ptc thermistor for electronic 

ballast and energy-saving lamp without temperature-increasing or power-consuming after preheating,which can prolong 

the on-off time and life of lamps greatly.meanwhile,it overcomes the shortcoming of temperature rising and power 

consumption which happen after preheat starting of the electronic ballast and energy saving lamp.it increases 

luminous flux and lighting efficiency.all of these prove that it can be called another breakthrough revolution in 

the field of green lumination appliance!

working principle of ptc thermistor:

when the high frequency shaking circuit loop has been put through, because ptc is in a cold state and rt is in a 

low state of resistance, its resistance value is far lower than that of c2, and the light pressure is smaller than 

that of starting it. then current through c1, rt forms the loop circuit-preheating filament. meanwhile, ptc thermistor 

is heated to above the curie temperature, rt heating temperature exceeding the switch temperature tsw and leaping to the state of high resistance too. its resistance value is far higher than that of c2, and the current goes through c1, c2, forming the return circuit and causing lc resonance and producing high pressure and lighting the tube. 

to a certain electronic ballast,energy saving lights,higher ptc thermistor resistance,smaller ptc ceramic body dimension,lower switch temperature,will lead to its lower power consumption,shorter preheating time,conversly,larger power consumption,longer preheating time.generally speaking, to delay the preheating time, we should select the relatively lower resistance, taller tc point and bigger ptc thermistor.

filament material will be sputtered seriously if the filament of energy-saving lamps starting with high voltage without preheating anymore,cause lamp tubes black and scrap in advance! use ptc thermistors mz12 type, the filament will be preheated around 1 second in starting, and then add high voltage to lit the lamp, can prevent black of the tube ends effectively,can also prevent components of lamps and lanterns lines such as audion from impact of starting instant large current and high back voltage,can prolong lamp life 10 times more.

ptc thermistor advantages:

1.soft preheating start component can greatly increase the switch times and service life,and quality is reliable;

2.no temperature-increasing or power-consuming after preheating;

3.can prolong lamp life 10 times more;

4.ptc thermistor switching life can pass over 100,000 times;

5.resistance of ptc thermistor doesn't drift in normal temperature;

6.rohs-compatible 

choose guidelines of intelligent ptc thermistor for electronic ballast and energy-saving lamp:

1.ptc thermistor curie temperature can not be too low that above 100℃ is advisable because high temperature of the energy-saving lamp in the work.

otherwise time delay of start will be too short that could not rise to preheating effect;

2.when single capacitor in the start line,ptc thermistor is required to withstand high voltage,usually above 800 v;

3.ptc thermistor with resistance of high rate can get a huge increase in reliability,which should be chosen preferentially in the meet 

under the premise of startup behavior;

4.must consider in low-temperature start, at low temperatures, the ptc thermistor heat balance resistance relatively low, may cause tubes don't start;

5.ptc thermistor switch life over 100000 times is much better;

6.preheat time can't less than 0.4 seconds;

7.the power consumption of ptc thermistor need conform to the relevant provisions.

ptc thermistor marking of model number:

1.ptc thermistor                                                                                                                                                                 

2.series: intelligent preheat starting ptc thermistor for electronic ballasts and energy-saving lamps                                                                                         

3.varistor chip size：05-φ5mm                                                                          

4.varistor voltage:151-150 /-10v

5.thermistor chip size: 3-φ3mm

6.ptcr curie temperature:f-55℃       h-75℃         n-105℃

7.ptcr resistance101-100ω、332-3300ω

1.the model marked as " *  " also suitable for tube t5,t8;

2.except for models shown as above,we can also design and produce other intelligent ptc thermistor according to customer's required specification .