To protect tungsten wire from surge damage through circuits, the following measures can be taken:
- Use surge protectors
Surge protectors are devices specifically used to prevent surge currents and surge voltages from damaging circuits and equipment. When a surge signal is detected in the circuit, it can quickly direct the surge energy into the ground, thereby protecting the safety of the circuit and equipment. For tungsten wires, surge protectors can be connected in series or in parallel in their power supply circuits to effectively prevent surge currents from impacting tungsten wires.
- Use voltage transient and surge protection devices
In the circuit, voltage transient and surge protection devices such as varistors (MOVs), gas discharge tubes, TVS tubes, etc. can be used. These devices have the characteristics of rapid response to voltage transients or surges, and can bypass surge voltages to the ground, thereby reducing the surge amplitude entering the circuit. For tungsten wires, these protection devices can be connected in series or in parallel in their power supply lines to protect the tungsten wires from damage by surge voltages.
- Design multi-level protection circuits
In order to further improve the surge protection capability of the circuit, a multi-level protection circuit can be designed. The multi-level protection circuit is composed of multiple voltage transient and surge protection devices, which can form layers of protection and effectively absorb and disperse surge energy. For tungsten wires, a multi-level protection circuit can be designed in its power supply circuit to ensure that when a surge occurs, the surge energy can be quickly dispersed to each protection device, thereby protecting the safety of the tungsten wire.
- Strengthen the protection of power lines
The power line is one of the main ways for surge current and surge voltage to enter the circuit. Therefore, strengthening the protection of the power line is also an important measure to protect the tungsten wire from surge damage. A power line with a shielding layer can be used to reduce the impact of external electromagnetic interference on the circuit. At the same time, varistor-type limiting components can be installed between phases and lines of the power line to limit the amplitude of the surge overvoltage.
- Reasonable selection and setting of circuit parameters
In circuit design, reasonable selection and setting of circuit parameters are also the key to protecting the tungsten wire from surge damage. For example, capacitors and inductors with larger capacity can be selected to smooth the fluctuation of the power supply voltage and reduce the impact of surge current. At the same time, parameters such as the gain and bandwidth of the circuit can be adjusted according to actual needs to reduce the sensitivity of the circuit to surge signals.
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