JPS5587959A - Signal level detection circuit - Google Patents
Signal level detection circuitInfo
- Publication number
- JPS5587959A JPS5587959A JP16573578A JP16573578A JPS5587959A JP S5587959 A JPS5587959 A JP S5587959A JP 16573578 A JP16573578 A JP 16573578A JP 16573578 A JP16573578 A JP 16573578A JP S5587959 A JPS5587959 A JP S5587959A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- level
- detection circuit
- signal level
- level detection
- 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
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To accurately detect the level of an input signal, by obtaining a stable level output which correlates to the level of the input signal and is not affected by temperature.
CONSTITUTION: Although the emitter voltage of a transistor 26 depends on temperatures 16, 17 and 14, 15 are not unbalanced to each other. Since the forward voltage of a diode 34 has a negative temperature coefficient, the base bias of transistors 10, 11 decreases with the rise in the temperature and increases with the fall in the temperature. Thus, the collector current of the differential amplifiers increases and the collector current of transistors 15, 17 decreases according as the temperature rises. As a result, a level output can be kept constant at a prescribed input level regardless of the temperature.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16573578A JPS5587959A (en) | 1978-12-26 | 1978-12-26 | Signal level detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16573578A JPS5587959A (en) | 1978-12-26 | 1978-12-26 | Signal level detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5587959A true JPS5587959A (en) | 1980-07-03 |
JPS6150260B2 JPS6150260B2 (en) | 1986-11-04 |
Family
ID=15818072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16573578A Granted JPS5587959A (en) | 1978-12-26 | 1978-12-26 | Signal level detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5587959A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6273270U (en) * | 1985-10-25 | 1987-05-11 |
-
1978
- 1978-12-26 JP JP16573578A patent/JPS5587959A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6273270U (en) * | 1985-10-25 | 1987-05-11 |
Also Published As
Publication number | Publication date |
---|---|
JPS6150260B2 (en) | 1986-11-04 |
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