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    • 1. 发明授权
    • Voltage control type control apparatus capable of achieving correct
control characteristic without increasing interface line number
    • 电压控制型控制装置能够在不增加接口线数的情况下实现正确的控制特性
    • US6081150A
    • 2000-06-27
    • US55766
    • 1998-04-07
    • Tomoya YamauraNobuhiko Watanabe
    • Tomoya YamauraNobuhiko Watanabe
    • H03G3/02H03G1/00H01J19/82
    • H03G1/0088
    • In a control voltage producing apparatus, either a pulse-duration modulation signal or a pulse-width modulation signal, which are generated in response to a digital control signal, is from a first buffer circuit to an averaging circuit so as to be averaged. A power supply voltage is supplied from a first voltage source to this first buffer circuit. Then, the averaged signal is supplied to a control voltage producing circuit for producing a target control voltage. When a control voltage is produced, the same output voltage as that of the first buffer circuit is generated by a second buffer circuit, and then is supplied to the control voltage generating circuit and an operation control circuit. In response to the output voltage derived from the second buffer circuit, the operation control circuit applies the power supply voltage to the control voltage producing circuit so as to cause this control voltage producing circuit to be operable. Also, the control voltage producing circuit uses the output voltage derived from the second buffer circuit as the reference voltage so as to regulate the control voltage. As a consequence, in response to one of the output voltages derived from the second buffer circuit, turning ON/OFF of the control voltage producing circuit can be controlled, and further the reference voltage used to regulate the control voltage can be applied.
    • 在控制电压产生装置中,响应于数字控制信号而产生的脉冲持续时间调制信号或脉冲宽度调制信号从第一缓冲电路到平均电路被平均化。 电源电压从第一电压源提供给该第一缓冲电路。 然后,平均信号被提供给用于产生目标控制电压的控制电压产生电路。 当产生控制电压时,通过第二缓冲电路产生与第一缓冲电路相同的输出电压,然后提供给控制电压产生电路和操作控制电路。 响应于从第二缓冲电路导出的输出电压,操作控制电路将电源电压施加到控制电压产生电路,以使该控制电压产生电路可操作。 此外,控制电压产生电路使用从第二缓冲电路导出的输出电压作为参考电压,以便调节控制电压。 结果,响应于从第二缓冲电路导出的一个输出电压,可以控制控制电压产生电路的接通/断开,并且还可以应用用于调节控制电压的参考电压。