Short-circuit protection circuit

Abstract

The invention discloses a short-circuit protection circuit. The short-circuit protection circuit comprises a first voltage input end which is grounded with a second divider resistor through a first divider resistor, the connecting end of the first divider resistor connecting with the second divider resistor is connected to the base electrode of a triode through a third resistor, the collecting electrode of the triode is connected to the input end of a second voltage through a first resistor, the emitting electrode of the triode is grounded, the triode is led out from the connecting end of the first resistor to serve as a voltage output end, and an LED is arranged between the collecting electrode and the emitting electrode of the triode in a bridging manner. The short-circuit protection circuit uses fewer circuit components, and has a simple structure, stable properties, and popularization and use values.

Description

technical field [0001] The invention relates to a protection circuit, in particular to a short circuit protection circuit. Background technique [0002] As we all know, a short circuit will bring unnecessary harm. In the light case, the circuit will be burned, and in severe cases, it may cause a fire. In order to avoid the occurrence of the above situation, various short circuit protection circuits have appeared in the prior art, but most of them have complicated structures. There are more functional modules, and the price is more expensive. On the one hand, this increases the cost of input, and at the same time, the complexity of the structure also increases the instability of product quality. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a short-circuit protection circuit with simple circuit structure and stable and reliable performance. [0004] In order to achieve the above...

AI Technical Summary

Problems solved by technology

[0002] As we all know, a short circuit will bring unnecessary harm. In the light case, the circuit will be burned, and in severe cases, it may cause a fire. In order to avoid the occurrence of the above situation, various short circuit protection circuits have appeared in the prior art, but most of them have complicated structures. There are more functional modules, and the price is more expensive. On the one hand, this increases the cost of input, and at the same time, the complexity of the structure also increases the instability of product quality.

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