会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • TV Tuner oscillator with feedback for more low frequency power
    • 电视调谐器振荡器,具有更多低频功率的反馈
    • US4564822A
    • 1986-01-14
    • US541440
    • 1983-10-13
    • Takeshi SaitohHiroshi Hatashita
    • Takeshi SaitohHiroshi Hatashita
    • H04B1/26H03B1/00H03B5/12H03C3/20H03H5/12H03J3/20
    • H03B5/1231H03B5/1203H03B5/1243H03B2200/0006H03B2200/004H03B2200/0042H03B2201/0208H03B2201/033
    • An oscillator circuit suitable for use in a local oscillator of a tuner of a television receiver set. A feedback circuit comprised of a feedback capacitor (17) is connected between a junction of a tuning diode (10) and a correcting capacitor (11) connected in series therewith and the emitter of an oscillation transistor (1). Oscillation voltage developing across the correcting capacitor is fedback to the emitter of the oscillation transistor through the feedback capacitor. When the tuning diode is conditioned to have a large capacitance value, a large oscillation voltage is fedback to the transistor through the feedback capacitor whereas when the tuning diode is conditioned to have a small capacitance value, a small oscillation voltage is fedback to the transistor through the feedback capacitor. The oscillator circuit continues to oscillate stably over a wide frequency range whenever the tuning diode changes from the small capacitance value to the large capacitance value or vice versa.
    • 一种适用于电视接收机的调谐器的本地振荡器的振荡器电路。 包括反馈电容器(17)的反馈电路连接在调谐二极管(10)和与其串联的校正电容器(11)的结和振荡晶体管(1)的发射极之间。 在校正电容器两端产生的振荡电压通过反馈电容反馈到振荡晶体管的发射极。 当调谐二极管被调节为具有大的电容值时,通过反馈电容将大的振荡电压反馈到晶体管,而当调谐二极管调节为具有小的电容值时,将小的振荡电压反馈到晶体管 反馈电容。 只要调谐二极管从小电容值变化到大的电容值,反之亦然,振荡器电路在宽频率范围内稳定地振荡。