Common power diode _ technetium technology to the quality of survival (certified) _ commonly diode

TVS for AC circuits, AC circuits for this type of bi-directional TVS is very convenient. It can protect all circuit after transformer components. Because plus TVS1, circuit fuse capacity is increased. TVS2 is a bidirectional TVS tube, which can be implemented to protect against over-voltage bridge rectifier and subsequent circuit elements. Vb its value and VC value should the transformer secondary output voltage to adapt. TVS3 is a unidirectional TVS tube, on top of it because of the additional voltage is a DC voltage is rectified, TVS3 load overvoltage protection only impact common diode, the circuit can be used in a three TVS tube as needed or a few. Technetium Guangdong Electronic Technology Co., Ltd. professional production and sales of various types of diodes twenty years, TVS tube is divided 400W, 600W, 1500W, 3000W speaker common diodes, 5000W, can produce different voltage points according to customer requirements, and can be divided into one-way or bidirectional. Trigger diode free diac forward and reverse voltage characteristics almost perfectly symmetrical. When the applied voltage across the device U lower than the forward breakover voltage V (B0) when used appliance Appliances diode, the device showed a high impedance state. When U> V (B0), the tube breakdown turned into the negative resistance area. Also when U is greater than the reverse breakover voltage V (BR), the tube can also enter negative resistance area. Breakover voltage symmetry with △ V (B) represented. △ V (B) = V (B0) -V (BR). General △ V (B) should be less than 2 volts. Bidirectional trigger diode forward breakover voltage values ??are generally three levels: 20-60V, 100-150V, 200-250V. Since the transition voltage greater than 20V, you can use a multimeter to measure forward and reverse power block of bidirectional diodes, hands should not move (RX10k), but still not completely sure it is good. Detect it good or bad, and can provide more than a DC voltage of 250V power supply MID common diode, detecting not big so 5mA current through the tube. Transistor voltage tester detects very convenient. If not, use megger measured in Figure 6 (positive and negative each time), the voltage of a large V (BR). For example: measuring a diode DB3, first of 27.5V, reverse and then measured as 28V, the △ V (B) = V (B0) -V (BR) = 28V-27.5V = 0.5V <2V indicating that the tube symmetry is very good. DIAC by adjusting potentiometer R2, you can change the triac conduction angle, thereby changing the continuous dimming bulb current (average) by. If you change the light bulb iron, electric mattress can achieve continuous thermostat. The circuit at the triac plus radiator, the controllable load power up to 500W. Technetium Guangdong Electronic Technology Co., Ltd. professional production and sales trigger diode twenty years, DB3 glass package body painted blue coating, sealing more effective protection products. Products are mainly used in the lighting industry, now and in many famous lighting manufacturers to maintain good relations of cooperation. Common power diode _ technetium technology to the quality of survival (certified) _ commonly diode provided by the Guangdong Electronic Technology Co. technetium. Technetium Guangdong Electronic Technology Co., Ltd. (www.goodark.asia) is Dongguan, diode leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the solid technetium technology leaders with the staff warmly welcome all inquiries negotiations to create technetium Technology better future.