论文部分内容阅读
当主人不在时来了电话无人接往往误事。按附图制作,再配上两只廉价低档录音机即可构成无人自动电话。当电话铃响后约4～10秒(可调)仍无人接时,电路自动接通电话,并开启2号放音机放音,预先录好的磁带就放音,如:“我是×××(单位或个人)的电话,号码××××××,现在没人,我是自动录音电话,现在录音机对您说话,等一会我不说时请您讲话,先报您姓名电话号码,有什么事,我只能录三分钟,如讲不完可再打一次电话,还可录三分钟……”反复播送。约播1～1.5分钟(可调)后,放音延时电路断,录音延时电路通,电话自动录音。录音时间3分钟(可调),已足够一般电话内容了。
When the owner is away when no one answered the phone went wrong. Press the photo production, coupled with two cheap low-end voice recorder can be composed of unattended phone. When the phone rang about 4 ~ 10 seconds (adjustable) is still no answer, the circuit automatically connected to the phone, and open the playback of the second player, pre-recorded tape to play, such as: “I am XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Phone number, what’s the matter, I can only record three minutes, if you can not finish a call again, but also recorded for three minutes ... ... ”Repeatedly broadcast. About 1 to 1.5 minutes broadcast (adjustable), playback delay circuit off, delay circuit recording, telephone automatic recording. Recording time of 3 minutes (adjustable), enough of the general telephone content.