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转钟仪是保证天文望远镜自动跟踪所观察的天体的一种仪器。它采用石英晶体振荡器作为频率基准。附图示出了一种为望远镜配套的转钟仪电原理图。 该转钟仪电路采用4块CMOS数字集成电路。IC1是有多种输出端的分频电路,IC2是由4个二输入端“与非”门电路组成的转速控制电路,由K2控制转钟仪的同步电动机的正常转动、快速调整和停止转动三种状态。分频器IC1的⑾脚输出较
Rotary clock is to ensure that astronomical telescopes automatically observe the observed object of an instrument. It uses a quartz crystal oscillator as the frequency reference. The figure shows an electrical diagram of the clock for the telescope. The clock instrument circuit using four CMOS digital integrated circuits. IC1 is a frequency divider circuit with a variety of output, IC2 is a speed control circuit composed of four two-input NAND gate circuit, the normal rotation of the synchronous motor controlled by the K2 clock, quickly adjust and stop the rotation of three Kind of status Divider IC1 pinout more