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
    • 1. 发明授权
    • Self-oscillating power supply
    • 自振电源
    • US4471327A
    • 1984-09-11
    • US379850
    • 1982-05-20
    • Timothy B. Moss
    • Timothy B. Moss
    • H03K3/014H03K3/28H03K4/62
    • H03K4/62H03K3/014H03K3/28
    • A self-oscillating circuit particularly adapted for driving the deflection yoke of a cathode ray tube (CRT) or a high voltage pulse transformer is disclosed. The circuit includes an NPN transistor, to the collector of which is coupled a direct voltage source and a first inductance and to the base of which is coupled a second, grounded inductance. Following transistor turn-on, the collector current ramps up in storing energy in the first inductance. With the transistor base drive removed, a voltage spike appears on the transistor's collector to which is coupled a grounded capacitor. The LC network comprised of the first inductance and the grounded capacitance attempts to resonate, with the collector voltage clamped by the transistor collector-base junction. The energy stored in the first inductance flows via the grounded voltage source and the collector-base junction of the forward biased transistor into the second inductance until the energy stored in the first inductance has been reduced to the point where the transistor's collector-base junction is no longer forward biased. Continued current flow through the second inductance to the transistor's base turns the transistor on, causing current to be reversed in the first inductance in repeating the cycle as energy is again stored therein. Transistor base drive stops when the energy in the second inductance is depleted. The values of a resistance in series with the second inductance and the aforementioned capacitance determine the circuit's oscillatory period.
    • 公开了一种特别适用于驱动阴极射线管(CRT)或高压脉冲变压器的偏转线圈的自振荡电路。 电路包括NPN晶体管,其集电极耦合有直流电压源和第一电感,并且其基极与第二接地电感耦合。 在晶体管导通之后,集电极电流在存储第一电感中的能量时上升。 在去除了晶体管基极驱动器的情况下,晶体管集电极上出现电压尖峰,并将接地的电容器耦合到其上。 由第一电感和接地电容构成的LC网络试图谐振,由集电极电压钳位在晶体管集电极 - 基极结上。 存储在第一电感中的能量经由接地电压源和正向偏置晶体管的集电极 - 基极结到第二电感中,直到存储在第一电感中的能量已经减小到晶体管的集电极 - 基极结 不再向前偏见。 导通晶体管基极的持续电流通过第二电感使晶体管导通,当再次存储能量时,重复该周期,使第一电感中的电流反转。 当第二电感中的能量耗尽时,晶体管基极驱动停止。 与第二电感串联的电阻值和上述电容确定电路的振荡周期。