(1) The application of TVs tube in TN power supply system the overvoltage caused by lightning overvoltage wave, load switch and other operation errors is easy to invade the interior of electrical and electronic equipment through the power supply line, causing electrical and electronic equipment failure, misoperation, and even permanent damage to the equipment, causing serious economic losses. By installing surge absorbing devices MOV and TVs on the power line, two-level protection is implemented, and common mode and differential mode protection are carried out for L and N lines. The specific method is to install mov at the front end of the line as the first level SPD protection to discharge most of the lightning current, and install high-power TVs tube at the end of the line (front end of the equipment) as the second level SPD protection to further weaken the overvoltage amplitude value and reduce the grid voltage to within the e/i safe withstand voltage range. It should be noted that MOV and TVs should achieve the coordination and coordination of voltage and energy, and the line length between ab should not be less than 5 m, otherwise the line length should be increased or decoupling devices should be installed.
(2) Application of TVs tube in network signal line TVs tube can be used not only for surge protection of power supply system, but also for surge protection of signal line. Gas discharge tube GDT and TVs tube are used to form signal surge protector, which is characterized by fast response, small leakage, almost no loss of signal, and can provide safe and reliable protection for high-speed network line.
(3) Application of TVs tube in DC power supply system the power supply circuit of an ordinary PC computer, the mains AC 220 V is reduced to AC 20 V through a transformer, and then the DC 10 V DC power is output through a modulation and rectification circuit and connected to the load. By installing a bidirectional transient voltage suppressor tvs1 at the output end of the transformer to absorb the instantaneous impulse current of L and N lines and clamp the circuit voltage at a safe voltage level, tvs1 can protect the rectifier at the back end of the transformer and other circuit components. A one-way transient voltage suppressor tvs2 is installed at the output end of the DC power supply behind the rectifier to protect the DC load from the impact of overvoltage and current.
(4) Application of TVs transistor in transistor circuit as a current control device, crystal triode is an important part of electronic integrated circuit. It can be divided into NPN tube and PNP tube, which are used in switching circuit, amplification circuit and voltage stabilizing circuit. In order to protect the transistor circuit from esd/eft (electrostatic discharge / electric fast transient pulse group) and other surge voltages, tvs1 and tvs2 are added at the input and output ends of the circuit respectively for protection.
