JPS5580126A - Constant-current circuit - Google Patents
Constant-current circuitInfo
- Publication number
- JPS5580126A JPS5580126A JP15450278A JP15450278A JPS5580126A JP S5580126 A JPS5580126 A JP S5580126A JP 15450278 A JP15450278 A JP 15450278A JP 15450278 A JP15450278 A JP 15450278A JP S5580126 A JPS5580126 A JP S5580126A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- lowering
- power
- power supply
- constant
- 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
Landscapes
- Control Of Electrical Variables (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE: To stabilize an oscillation frequency by lowering power consumption as much as possible without lowering a start voltage for oscillation, by inserting an oscillation circuit between the drain of a MOS transistor and a 2nd power voltage.
CONSTITUTION: Between the source of MOS transistor Tr and a 1st power supply, resistance 13 is interposed while its gate is connected direct to the 1st power supply, and between the drain and 2nd power supply VDD, oscillation circuit 11 is inserted. Consequently, its power consumption can be reduced as low as possible without lowering a start voltage for oscillation, and dependency upon the power voltage can also be minimized, so that an oscillation frequency can be improved in stability.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15450278A JPS5580126A (en) | 1978-12-12 | 1978-12-12 | Constant-current circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15450278A JPS5580126A (en) | 1978-12-12 | 1978-12-12 | Constant-current circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5580126A true JPS5580126A (en) | 1980-06-17 |
Family
ID=15585636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15450278A Pending JPS5580126A (en) | 1978-12-12 | 1978-12-12 | Constant-current circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5580126A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57501058A (en) * | 1980-07-14 | 1982-06-10 | ||
JP2006520146A (en) * | 2003-03-07 | 2006-08-31 | フリースケール セミコンダクター インコーポレイテッド | Amplitude level control circuit |
-
1978
- 1978-12-12 JP JP15450278A patent/JPS5580126A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57501058A (en) * | 1980-07-14 | 1982-06-10 | ||
JP2006520146A (en) * | 2003-03-07 | 2006-08-31 | フリースケール セミコンダクター インコーポレイテッド | Amplitude level control circuit |
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