JPS55140185A - Voltage controlling circuit of electronic clock - Google Patents
Voltage controlling circuit of electronic clockInfo
- Publication number
- JPS55140185A JPS55140185A JP4806979A JP4806979A JPS55140185A JP S55140185 A JPS55140185 A JP S55140185A JP 4806979 A JP4806979 A JP 4806979A JP 4806979 A JP4806979 A JP 4806979A JP S55140185 A JPS55140185 A JP S55140185A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power source
- characteristic
- mos type
- free
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain a stable power source voltage free of the temperature charactericstic and reducing the power by controlling the voltage on the basis of the dynamic characteristic of an MOS type FET.
CONSTITUTION: The drain current of MOS type FET increases when the temperature increases in a case where a voltage between the gate and source is less than a predetermined voltage, and conversely reduces when it exceeds the predetermined voltage. Accordingly in a ring oscillator 20 constituted by an FET having this characteristic is used, a stable frequency free of the temperature characteristic is obtained when the power source voltage is sustained at a specific value, and conversely when the oscillated frequency of the oscillator 20 is sustained at a specific value, a voltage free of the temperature characteristic is obtained, As a consequence, when a voltage higher than the predetermined control voltage is applied on a circuit block 5 at the time of connecting the power source, and the output period of the ring oscillator is shortened, a charge pump circuit 18 within the control means 19 is caused to discharge a capacity 17 thereby to lower the voltage between the gate and source of the MOS type FET 16. As a consequence, a stable power source voltage can be obtained, and, at the same time, the power can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4806979A JPS55140185A (en) | 1979-04-20 | 1979-04-20 | Voltage controlling circuit of electronic clock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4806979A JPS55140185A (en) | 1979-04-20 | 1979-04-20 | Voltage controlling circuit of electronic clock |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55140185A true JPS55140185A (en) | 1980-11-01 |
JPS6235127B2 JPS6235127B2 (en) | 1987-07-30 |
Family
ID=12793052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4806979A Granted JPS55140185A (en) | 1979-04-20 | 1979-04-20 | Voltage controlling circuit of electronic clock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55140185A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100387266B1 (en) * | 1999-12-28 | 2003-06-11 | 주식회사 하이닉스반도체 | Voltage control circuit |
-
1979
- 1979-04-20 JP JP4806979A patent/JPS55140185A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100387266B1 (en) * | 1999-12-28 | 2003-06-11 | 주식회사 하이닉스반도체 | Voltage control circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6235127B2 (en) | 1987-07-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55149871A (en) | Line voltage detector | |
JPS5292321A (en) | Power supply circuit | |
JPS5513566A (en) | Mis field effect semiconductor circuit device | |
JPS5529234A (en) | Power supply device | |
JPS52147753A (en) | Switching type dc stabilized power supply | |
JPS55140185A (en) | Voltage controlling circuit of electronic clock | |
JPS54113051A (en) | Integrating circuit of time-limit relay | |
JPS54152848A (en) | Crystal oscillator circuit of low power consumption | |
JPS55115730A (en) | Switching circuit | |
JPS54130872A (en) | Bistable relay driving circuit | |
GB2008879A (en) | Relaxation oscillator | |
JPS53125784A (en) | Semiconductor device | |
JPS57112135A (en) | Mos type analogue switch integrated circuit | |
JPS5583340A (en) | Buffer circuit | |
JPS547149A (en) | Constant current circuit | |
JPS5258450A (en) | Transistor output circuit | |
JPS56168184A (en) | Electronic timepiece | |
JPS547147A (en) | Constant voltage circuit | |
JPS5297681A (en) | Semiconductor power circuit | |
JPS54112680A (en) | Electronic watch | |
JPS5310046A (en) | Electronic circuit | |
JPS56159891A (en) | Semiconductor integrated circuit device | |
JPS51118059A (en) | Switching mode regulator circuit | |
JPS5592005A (en) | Electronic circuit | |
JPS5627685A (en) | Voltage controller for electronic timepiece |