Control device for electronic product

A technology for control devices and electronic products, which is applied in the directions of amplified control, electrical components, limiting amplitude, etc., and can solve problems such as affecting the service life of low-voltage electronic products, signal disturbance, and electronic product error messages.

CN108449062AActive Publication Date: 2018-08-24SHENZHEN DOGCARE INNOVATION & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-08-24

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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.
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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 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 wrong information generated by the product not only affects the service life of low-voltage electronic products, but also seriously affects the user experienc...

Examples

Embodiment 1

[0013] Embodiment 1, the control device of the electronic product includes a signal receiving circuit, a logarithmic differential feedback circuit and a comparative voltage stabilization output circuit, the signal receiving circuit receives the signal at the input end of the signal transmission channel in the control device of the electronic product, and the logarithmic The differential feedback circuit is divided into two ways to receive the signal output from the receiving circuit, one way is limited by the sliding rheostat RW2 and then input to the non-inverting input terminal of the operational amplifier AR2, and at the same time, the power supply +10V provides the base potential for the non-inverting input terminal of the operational amplifier AR2. The other path is processed by the logarithmic circuit composed of the operational amplifier AR4 and the transistor Q1. The signals output by the logarithmic circuit are respectively the base potential of the inverting input term...

Embodiment 2

[0015] Embodiment 2, on the basis of Embodiment 1, the signal receiving circuit receives the signal at the input end of the signal transmission channel in the control device of the electronic product, the regulator tube D1 has the effect of stabilizing the voltage, the inductor L1 filters, and one end of the inductor L1 Connect to the anodes of diode D3 and diode D2, the other end of inductor L1 is connected to the signal output port and the negative pole of regulator D1, and the anode of regulator D1 is grounded.

[0016]Implementation 3, on the basis of Embodiment 1, the comparison voltage stabilizing output circuit receives the output signal of the logarithmic differential feedback circuit, and the comparator AR3 compares the signals, and a voltage stabilizing circuit composed of the triode Q3 and the voltage stabilizing tube D7 is designed to stabilize the voltage , to further stabilize the signal, and design an LC circuit composed of inductance L2 and capacitor C1 in paral...