Voltage control type control apparatus capable of achieving corr

Details Voltage control type control apparatus capable of achieving corr Voltage control type control apparatus capable of achieving corr

1998-04-07

2000-06-27

Kim, Jung Ho

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327531, 330127, 330297, H01J 1982

Patent

active

060811501

ABSTRACT:
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.

REFERENCES:
patent: 5748023 (1998-05-01), Hassner et al.
patent: 5990751 (1999-11-01), Takita

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