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开方组件是由一个他激式调幅调宽乘法器电路组成,原理图见图1。它的运算公式为设K→∞,H=10(三角波幅值)则 V_0=(HV_i)~(1/2)=(10V_i)~(1/2) (2) 首先把V_2输入比较器(图2),比较器将V_2与三角波进行比较,得到的波形(图3)作为调制信号送入调制器,根据相似三角形原理可知该调制信号与V_2成一定比例关系:t_1=(V_2/H)T,式中T是三角波的振荡周期。再将V_0也送入调制器后,得到一个幅值为V_ω宽度为t_1的矩形波。该波形经过滤波器成为直流信号V_2V_0/H,送到差动积分器反相端;V_1经过跟随器,再由电阻9.1kΩ及电位器W_1组成的分压器分压,得到直流信号V_1/H,该信号送到差动积分器正相端,H一般为10V。那么运算关系式为
The prescribing component consists of a stimulating amplitude modulation wide multiplier circuit, the schematic diagram shown in Figure 1. Its operation formula is set to K → ∞, H = 10 (triangle wave amplitude) Then V_0 = (HV_i) ~ (1/2) = (10V_i) ~ (1/2) Figure 2). The comparator compares V_2 with the triangular wave. The resulting waveform (Figure 3) is fed to the modulator as a modulated signal. According to the principle of the similar triangle, the modulated signal is proportional to V_2: t_1 = (V_2 / H) T, where T is the triangular wave oscillation period. Then V_0 also sent to the modulator, get a width of V_ω width t_1 rectangular wave. The waveform through the filter into a DC signal V_2V_0 / H, sent to the differential integrator inverting terminal; V_1 through the follower, and then by the resistor 9.1kΩ potentiometer W_1 composed of the voltage divider to obtain the DC signal V_1 / H , The signal sent to the positive phase differential integrator, H is generally 10V. Then the computing relationship is