Strong current pulse protection circuit and method

Abstract

The invention discloses a strong current pulse protection circuit which comprises an electromagnetic pulse source, a transient open circuit and a protected circuit. The input ends and the output ends of the transient circuit break circuit and the protected circuit are respectively connected with the positive electrode and the negative electrode of the electromagnetic pulse source; the transient circuit break circuit comprises a current monitoring module which outputs a first reference voltage to a control module when a current input by an electromagnetic pulse source is greater than a preset threshold current; the voltage monitoring module outputs a second reference voltage to the control module when the voltage input by the electromagnetic pulse source is greater than a preset threshold voltage; and the control module is used for disconnecting the electromagnetic pulse source from the protected circuit when receiving the first reference voltage or the second reference voltage, and driving the protected circuit by the reference voltage. According to the invention, under the strong electromagnetic pulse effect of the electromagnetic pulse source, the current passing through the protected circuit does not exceed the threshold current, the input voltage of the protected circuit does not exceed the threshold voltage, and the performance of each component can still be kept stable.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic pulse protection, and in particular relates to a strong electric pulse protection circuit and a strong electric pulse protection method. Background technique [0002] Today's electromagnetic environment has become more and more complex with the development of science and technology, and strong electromagnetic pulses have a major impact on daily life. The reason is that when a strong electromagnetic pulse comes, it will cause destructive damage to the device interface, resulting in a serious decline in the performance of the device or irreversible damage, which will cause the device to fail to work. The transient high voltage or high current is the main form of strong electromagnetic pulse. The function of the transient circuit breaker is to cut off the transient high voltage or high current in a very short time when the transient high voltage or high current comes, so that the input circui...

AI Technical Summary

Problems solved by technology

[0003] In related technologies, the threshold current of the circuit breaker is generally a fixed value, but different interfaces have different operating currents, which leads to the need to use different circuit breakers, resulting in increased circuit complexity, poor versatility, and high maintenance costs in the later period.

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