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发明名称
一种黑白电视机遥控选台器
摘要
一种黑白电视机遥控选台器,由红外线发射电路、红外线接收电路、电平解调电路、充放电电路,压控可变振荡电路,高放输入电路,混频输出电路等组成。其特征在于通过遥控改变压控可变振荡电路的频率输出,将有线电视输入的45—300MHz频率一同输入混频器混频,输出870MHz的固定频率,来达到遥控选台的目的。其优点是结构简单,价格低廉。本实用新型适合已开通300MHz有线电视系统的黑白电视机用户使用。
申请公布号
CN2426659Y
申请公布日期
2001.04.11
申请号
CN00235280.X
申请日期
2000.05.26
申请人
陈彩富
发明人
陈彩富
分类号
H04N5/44
主分类号
H04N5/44
代理机构
代理人
主权项
1、一种黑白电视机遥控选台器,由红外线发射电路、红外线接收电路、电平解调电路、充放电电路、压控可变振荡电路、高放输入电路、混频输出电路等组成,其特征在于所述的压控可变振荡电路,组成该电路元件之一的变容二极管(D1),其所需的工作电压是单独由组成该电路的另一个元件储能电容(C12)所提供的。
地址
317013浙江省临海市东洋镇顺南街15号
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