The utility model relates to a signal conversion interface circuit, which belongs to the technical field of signal processing circuit. The utility model includes power VCC2, capacitance C, resistance R1, R2, R3, R4, voltage stabilized diode Dw, triode Q, in which the voltage regulator diode Dw is used for screening signals. The resistance R3 is the circuit resistance, making the voltage stable diode Dw working normally. The resistance R4 is a voltage divider. The capacitance C is a filter capacitor, which filters the peak in the input signal and reduces the high frequency interference. The utility model solves the problem that the post level circuit can't effectively detect and process signals under the condition of double power supply or multiple power supply, which does not match the level of the former circuit and the back level circuit. The circuit not only has fewer components and works reliably, but also can be used in the circuit of power supply voltage change, making signal detection and processing convenient and effective, and has a certain ability of eliminating interference. It is a kind of signal conversion interface circuit with small limitation and strong adaptability and practicability.
【技术实现步骤摘要】
一种信号转换接口电路
本技术涉及一种信号转换接口电路,属于信号处理电路
技术介绍
电子电路中存在许多装置需要双电源或多电源供电。由于供电电源的不同,从而对电路中信号产生影响。信号的幅值随零参考点的变化而变化,使得前级电路与后级电路电平不匹配,后级电路无法有效检测处理信号,影响装置的正常运行。虽然目前已有芯片可以实现电平转换,但是其仅仅针对某些特定的标准数字芯片和特定的电压值,在电源电压不属于标准范围的情况下无法正常工作。为消除不同电源对信号的影响,一种信号转换接口电路被提出。
技术实现思路
本技术要解决的技术问题是:本技术提供一种信号转换接口电路,用于解决双电源或多电源供电对信号影响,从而造成前级电路与后级电路电平不匹配的问题。前级电路信号通过信号转换接口电路后改变信号幅值,使其与后级电路电平相匹配,可以被有效的检测处理。信号转换接口电路的输出信号与输入信号频率保持一致,成反向关系。本技术技术方案是:一种信号转换接口电路,包括电源VCC2、电容C、电阻R1、电阻R2、电阻R3、电阻R4、稳压二极管Dw、三极管Q;前级电路信号Ui输入稳压二极管Dw阴极,稳压二极管阳极接电阻R4一端,电阻R4的另一端分别与三极管Q的基极、电容C的一端和电阻R3的一端相连,电容C的另一端和电阻R3的另一端连入三极管Q的发射极,三极管Q的发射极接地,电源VCC2经过电阻R2同时连入三极管Q的集电极和电阻R1的一端,电阻R1的另一端为输出端Uo。本技术的有益效果是:本技术提供一种信号转换接口电路,解决了在双电源或多电源供电情况下,前级电路与后级电路电平不匹配导致后级电路无法有 ...
【技术保护点】
一种信号转换接口电路,其特征在于:包括电源VCC2、电容C、电阻R1、电阻R2、电阻R3、电阻R4、稳压二极管Dw、三极管Q;前级电路信号Ui输入稳压二极管Dw阴极,稳压二极管阳极接电阻R4一端,电阻R4的另一端分别与三极管Q的基极、电容C的一端和电阻R3的一端相连,电容C的另一端和电阻R3的另一端连入三极管Q的发射极,三极管Q的发射极接地,电源VCC2经过电阻R2同时连入三极管Q的集电极和电阻R1的一端,电阻R1的另一端为输出端Uo。
【技术特征摘要】
1.一种信号转换接口电路,其特征在于:包括电源VCC2、电容C、电阻R1、电阻R2、电阻R3、电阻R4、稳压二极管Dw、三极管Q;前级电路信号Ui输入稳压二极管Dw阴极,稳压二极管阳极接电阻R4一端,电阻R4的另一端分别与三极管Q的基极、电容C的一端和电阻R3的一端相连,电容C的另一端和电阻...
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