That the common amplifier count rate is low , temperature voltage drift is very good , the machinery adjustment is rough and instability , in order to overcome these shortcomings ; we use digital potentiometer relay x9511 and precise operational amplifier op37 , the electric circuit structure become simple 为了克服一般放大器计数率低,温漂大,机械调节粗糙不够稳定等缺点,使用了非易失性数字电位器x9511和精密运放op37 ,使电路结构大大简化。
A 10 - bits system ( the result of the estimated speed is a 10 - bits digital ) and a 12 - bits one are presented and , their precisions and lc usages are compared , experimental results are given to show its effectiveness . max + plusii emulation assures the circuit structure 本文研制了10bit和12bit两种精度的基于模型参考自适应的速度估算ip核,并进行功能和时序验证,比较了它们所占用的芯片资源的大小, max + plus的仿真确定了实际的电路硬件结构。
Because of the reuse of some building blocks , such as adders and registers in fft processor , and the regularity of the circuit structure , the test scheme can be implemented at ? speed and in parallel without circuit performance degradation , and with minimal additional hardware and area overhead 由于处理器中一些加法器、寄存器的再利用,以及电路结构的规则性,因而只需最少的额外硬件、面积开销即可真速、并行地实施该测试方案而不会降低电路性能。
The circuit structure which can transfer one unregulated sinusoidal voltage with high thd into another regulated constant frequency sinusoidal voltage with low thd is constituted of input cycloconverter , high frequency storage transformer , output cycloconverter , input and output filter 该电路结构由输入周波变换器、高频储能式变压器、输出周波变换器以及输入、输出滤波器构成能够将一种不稳定劣质的正弦交流电变换成另一种同频率稳定的优质正弦交流电压。
In terms of the regularity and peculiar feature of a pla ' s circuit structure , the paper proposes a converse testable design scheme , where outputs of the pla ' s circuit are converted into inputs , and or array into and array by an available method , and at column the test results are observed 摘要根据pla电路结构的规整性和独特性,提出了一种逆向思维的可测性设计方案,即通过适当的方法把输出端进行输入端化,把或阵列转变成与阵列,并采用了纵向观测技术。