[Quartz Lamp Electronic Transformer]What is Quartz Lamp Electronic Transformer Quartz Lamp Electronic Transformer Principle
What is Quartz Lamp Electronic Transformer
Quartz lamp electronic transformer is a kind of lamp transformer circuit developed on the basis of high frequency electronic ballast circuit. Electronic transformers are switching regulated power supplies. It is actually an inverter. It is mainly composed of protection circuit, bridge rectifier circuit, oscillation circuit and isolated output circuit. It first converts alternating current into direct current. Then it uses electronic components to form an oscillator to convert direct current into high-frequency alternating current. The required voltage is output through the switching transformer and then rectified twice for electrical appliances.
Principle of quartz lamp electronic transformer
The working principle of quartz lamp electronic transformer is similar to that of switching power supply. Direct current, a high-frequency oscillation circuit composed of oscillating transformer t1, triodes vt1 and vt2, converts pulsating DC into high-frequency current, and then ferrite output transformer t2 steps down the high-frequency high-voltage pulse to obtain the required voltage and power . r1 is the current limiting resistor. Resistor r2, capacitor c1 and bidirectional trigger diode vd5 constitute a startup trigger circuit. Transistor vt1, vt2 select s13005, its b is 15 ~ 20 times. High-power triodes with buceo>=35ov such as c3093 can also be used. Trigger diode vd5 selects db3 or vr60 of about 32v. The oscillating transformer can be made by yourself, wound on a h7 x 10 x 6 magnetic ring with audio wire. tia, t1b around 3 turns, tc around 1 turn. The ferrite output transformer t2 also needs to be self-made, and the magnetic core is made of ei-type ferrite with a side length of 27mm, a width of 20mm and a thickness of 10mm. t2a is wound with 100 turns of high-strength enameled wire with a diameter of 0.45mm, and t2b is wound with 8 turns of high-strength enameled wire with a diameter of 1.25mm. Diodes vd1-vd4 use in4007 type, bidirectional trigger diodes use db3 type, capacitors c1-c3 use polypropylene polyester polyester capacitors, with a withstand voltage of 250v. When the circuit is working, the working voltage of point a is about 12v; point b is about 25v; point c is about 105v; point d is about 10v. If the voltage does not meet the above values, or the circuit does not oscillate, check the circuit for wrong soldering, missing soldering or virtual soldering. Then check whether vt1 and vt2 are good, and whether the phases of t1a and t1b are correct. After the whole circuit is successfully installed and adjusted, it can be put into a small box made of metal material to facilitate shielding and heat dissipation, but attention must be paid to the insulation of the circuit and the casing. Externally, changing the number of turns of the two coils of t2 a and b can change the output high-frequency voltage.
Characteristics of electronic transformers for quartz lamps
1. Adopt the most advanced energy-saving circuit
2. Long service life
3. Beautiful appearance
4. Stable performance
5. Small size
6. Easy to install
Applications of electronic transformers for quartz lamps
1. Applicable products
Mirror headlights, spotlights, track lights, ceiling lights, low-voltage lights, modern lights, modern Crystal lamps, wall lamps and other products
2. Applicable places
Hotels, guesthouses, restaurants, shopping malls, showcases, exhibitions, showrooms, home places, etc.
