Protective circuit
A technology for protecting circuits and current limiting circuits, which is applied in the direction of amplifier protection circuit layout, etc., and can solve problems such as rising
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[0035] Please refer to figure 1 as shown, figure 1 It is an embodiment of the present invention applied to a protection circuit of an operational amplifier. Generally speaking, the internal circuit design of the operational amplifier can be roughly divided into three large blocks as the input stage circuit, the gain stage circuit and the output stage circuit. The exterior of the operational amplifier includes an output terminal Vo, a positive input terminal, and a negative input terminal. The input terminal, a positive voltage source +VDD and a negative voltage source -VDD, circuits at all levels are formed by coupling multiple transistors, and different types of operational amplifiers have different structures, since this part belongs to the present invention Those of ordinary skill in the art know that, therefore, in order to simplify the length, this description only describes the scope of application of the protection circuit when it is written, and does not describe the ...
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