The role of ESD protection elements is to transfer ESD stress from the sensitive element, so that the current flows through the protection element rather than the sensitive element, while maintaining a low voltage on the sensitive element; ESD protection components should also have low leakage and low capacitance characteristics that will not reduce circuit function; Not at high speed

(4) However, because the switching circuit does not add a special control circuit, it will produce RF interference and pollute the grid with high order harmonics or spikes, which is special for this purpose. What that means is, when a control signal is added,

Multi-type buy resistors locally helps new energy to achieve a closed loop, and fuses occupy 30%+ market share. The circuit guarantee is usually completed by the circuit control device and the circuit protection device.

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The protective device must act quickly to control the current and voltage in the circuit. TVS semiconductors respond very quickly to control amplitude. The reason is that they are solid-state diodes that absorb the sudden or instantaneous effects of overvoltage by adjusting the amplitude and bringing it to the level. They provide a wide range of protection within the operating area to provide rapid protection against excessive voltages and currents. These diodes are an important part of basic semiconductor element protection devices to limit amplitude and protect circuits.

Color TV generally uses switching power supply, there is a relatively perfect protection circuit. When the fuse is burned, the rectifier filter circuit and degaussing circuit before the protection circuit should be checked first. The most common causes are the internal breakdown of the rectifier diode or the rectifier full bridge, the breakdown of the filter capacitor, the breakdown of the power switch tube or the internal breakdown of the power integration block, and the short circuit of the demagnetization resistance. In general, the use of resistance measurement can quickly find the fault component.

In general, when the circuit contains only one dynamic component, the linear resistance circuit other than the dynamic component can be replaced by a series combination of voltage source and resistance, or a parallel combination of current source and resistance, for such a circuit, the circuit equation established will be a first-order linear ordinary differential equation, and the corresponding circuit is called a first-order circuit. When the circuit contains two or n dynamic elements, the equation established is a second-order differential equation or a nth-order differential equation.

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