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电视丰富了人们的业余文化生活,人们的日常生活已经离不开电视,已经与电视紧紧地联系在一起。人们在看电视的时候,尤其在夜深人静,即使将电视机的音量开小,也会影响家人的休息,特别对患有失眠症的家人影响更大。本文针对这种情况,为电视机加装了无线耳机,使得电视机的喇叭不再需要发出声音,使用者只要使用调频收音机接收电视伴音信号,并用调频收音机的耳机收听声音,这样既不影响家人休息,又能正常收看电视。无线耳机电路如图1所示,F02为采用软封包装的微型调频发射集成电路,主要参数如下:工作电压
TV enriched people’s amateur cultural life, people’s daily life has been inseparable from the television, has been closely linked with the television. People watching television, especially in the dead of night, even if the volume of the television set is small, it will also affect the family’s rest, especially for insomnia families have a greater impact. In this case, the TV is equipped with a wireless headset, so that the television speaker no longer needs to make a sound. The user only needs to use the FM radio to receive the TV sound signal and listen to the sound with the FM radio’s earphone, so as not to affect the family Rest, but also normal watching TV. Wireless headphone circuit shown in Figure 1, F02 for the use of soft encapsulated miniature FM transmitter IC, the main parameters are as follows: Operating voltage