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我用一块CD4017集成块做了一个彩电频道遥控器。由于发射机只有一个按键,每按键一次,接收器CD 4017的Q_0～Q_9依次出现高电位,所以只能做到顺序选台,在使用中颇感不方便。为此,我对电路作了一些小改进,只增加了几个元件,就实现了随意选台的要求。经过半年的使用,工作性能极好,克服了一般有编码又有译码电路的遥控器线路复杂、成本高、不利于业余制作的缺点。电路如图所示。
I used a CD4017 integrated block to do a TV remote control. Since the transmitter has only one button, each time the button is pressed, the Q_0 ~ Q_9 of the receiver CD 4017 turn on a high potential in turn so that only the sequence selection can be performed, which is inconvenient in use. To this end, I made some minor improvements to the circuit, adding only a few components, to achieve the optional station requirements. After six months of use, the work performance is excellent, overcoming the general coding and decoding circuit remote control circuit complexity, high cost, is not conducive to the shortcomings of amateur production. Circuit as shown.