JPS5662426A - Digital control circuit - Google Patents
Digital control circuitInfo
- Publication number
- JPS5662426A JPS5662426A JP13764079A JP13764079A JPS5662426A JP S5662426 A JPS5662426 A JP S5662426A JP 13764079 A JP13764079 A JP 13764079A JP 13764079 A JP13764079 A JP 13764079A JP S5662426 A JPS5662426 A JP S5662426A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- vdd
- misfftq1
- fed
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
Landscapes
- Engineering & Computer Science (AREA)
- Logic Circuits (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
Abstract
PURPOSE:To make stable the resonance frequency, by supplying the power supply voltage of a clock pulse generating circuit from a stabilized power supply circuit with voltage clamp. CONSTITUTION:A regulated power supply VDD' is formed by providing a depletion type MISFFTQ1 to clamp a power supply voltage VDD and a differential amplifier circuit 2 where a reference voltage Vref is fed to the noninverting input to be clamped and a power supply voltage VDD' is fed to the inverting input via the said MISFFTQ1. The differential amplifier 2 controls the impedance of the said MISFFTQ1 so that the voltage VDD' of the source side S of MISFFTQ1 can be equal to the reference voltage Vref. Voltage clamp is made for a high supply voltage VDD in excess of the reference voltage Vref to obtain stable power supply VDD', which is fed to a clock pulse generating circuit 3 and a logic circuit 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13764079A JPS5662426A (en) | 1979-10-26 | 1979-10-26 | Digital control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13764079A JPS5662426A (en) | 1979-10-26 | 1979-10-26 | Digital control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5662426A true JPS5662426A (en) | 1981-05-28 |
Family
ID=15203360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13764079A Pending JPS5662426A (en) | 1979-10-26 | 1979-10-26 | Digital control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5662426A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179288A (en) * | 1981-04-27 | 1982-11-04 | Nippon Oil Co Ltd | Raw material pitch for carbon fiber |
| EP0240618A2 (en) * | 1986-04-07 | 1987-10-14 | Tektronix, Inc. | Power buffer circuit |
| JPS63123220A (en) * | 1986-11-12 | 1988-05-27 | Nec Corp | Interface circuit |
-
1979
- 1979-10-26 JP JP13764079A patent/JPS5662426A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179288A (en) * | 1981-04-27 | 1982-11-04 | Nippon Oil Co Ltd | Raw material pitch for carbon fiber |
| JPH0144752B2 (en) * | 1981-04-27 | 1989-09-29 | Nippon Oil Co Ltd | |
| EP0240618A2 (en) * | 1986-04-07 | 1987-10-14 | Tektronix, Inc. | Power buffer circuit |
| JPS63123220A (en) * | 1986-11-12 | 1988-05-27 | Nec Corp | Interface circuit |
| JP2536311B2 (en) * | 1986-11-12 | 1996-09-18 | 日本電気株式会社 | Interface circuit |
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