Control devices for electronic products

Abstract

The invention discloses a control device for an electronic product, comprising a signal receiving circuit, a logarithmic differential feedback circuit and a comparative regulated output circuit, wherein the signal receiving circuit receives signals of an input end of a signal transmission channel in the control device of the electronic product; the logarithm differential feedback circuit is divided into two paths to receive the signals output by the signal receiving circuit, in which one path is input to the in-phase input terminal of an operational amplifier AR2 after being limited by a sliderheostat RW2, and the other circuit is processed by a logarithmic circuit composed of an operational amplifier AR4 and a triode Q1, and a transistor Q2 feeds back signals at the emitter, thereby obtaining the effects of adjusting signal amplitudes and feeding back stable signals. The comparative regulated output circuit receives output signals of the logarithmic differential feedback circuit, andoutputs the signals after designing that the LC circuit composed of an inductor L2 and a capacitor C1is filtered. That is, in the signal transmission channel in the control device of the input electronic product, the easily unstable signals in the signal transmission channel of the control device of the low-voltage electronic product are effectively stabilized, and the anti-interference performance of the signals is improved.

Description

technical field [0001] The invention relates to the technical field of electronic product control, in particular to a control device for electronic products. Background technique [0002] With the development of science and technology, various electronic products have developed, and electronic products have now become an indispensable part of people's lives, bringing great convenience to people's lives, and the control devices of electronic products are in the use of electronic products. The most important component is that the signal in the signal transmission channel of the control device of the low-voltage electronic product is easily unstable, and the electromagnetic interference of other similar electronic products can easily cause the variation of the signal amplitude, which will lead to the disorder of the signal, and even cause the electronic The wrong information generated by the product will not only affect the service life of low-voltage electronic products, but a...

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Problems solved by technology

[0002] With the development of science and technology, various electronic products have developed accordingly. Electronic products have now become an indispensable part of people's life, bringing great convenience to people's life. It is a relatively important component. Among them, the signal in the signal transmission channel of the control device of the low-voltage electronic product is prone to instability, and it is easily caused by electromagnetic interference from other similar electronic products, which can easily cause a change in the signal amplitude, which will lead to signal disorder, and even cause electronic interference. The product generates error information, which not only affects the service life of low-voltage electronic products, but also seriously affects the user experience

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