JPS54128250A - Current shunt circuit and fm detection circuit using it - Google Patents
Current shunt circuit and fm detection circuit using itInfo
- Publication number
- JPS54128250A JPS54128250A JP3554278A JP3554278A JPS54128250A JP S54128250 A JPS54128250 A JP S54128250A JP 3554278 A JP3554278 A JP 3554278A JP 3554278 A JP3554278 A JP 3554278A JP S54128250 A JPS54128250 A JP S54128250A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- circuit
- detection
- base
- collector
- 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
- Amplifiers (AREA)
Abstract
PURPOSE: To ensure the shunt function with reduced noise as well as to utilize the function to the FM detection to enhance the detection characteristics by securing the common connection for the base and then obtaining the output caused by the load resistance of the collector side when the bias voltage is varied.
CONSTITUTION: Signal input transistor Q1 generates the collector current in accordance with input signal SG. The shunt transistor shares the base, and the emitter is shared by resistance R1 and R2. Accordingly, the signals corresponding to the resistance value and the shunted current emerge at collector load resistance R3 and R4 by varying base bias voltage E1. And thus, the output signals free from the mutual interference can be obtained at resistance R3 and R4. This circuit is suited to the quadrature circuit which is used for the FM signal detection requiring to reduce the mutual phase fluctuation for the two signals.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3554278A JPS54128250A (en) | 1978-03-29 | 1978-03-29 | Current shunt circuit and fm detection circuit using it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3554278A JPS54128250A (en) | 1978-03-29 | 1978-03-29 | Current shunt circuit and fm detection circuit using it |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54128250A true JPS54128250A (en) | 1979-10-04 |
Family
ID=12444609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3554278A Pending JPS54128250A (en) | 1978-03-29 | 1978-03-29 | Current shunt circuit and fm detection circuit using it |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54128250A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0470102A (en) * | 1990-07-10 | 1992-03-05 | Toshiba Corp | Fm demodulation circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104852A (en) * | 1974-01-19 | 1975-08-19 |
-
1978
- 1978-03-29 JP JP3554278A patent/JPS54128250A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104852A (en) * | 1974-01-19 | 1975-08-19 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0470102A (en) * | 1990-07-10 | 1992-03-05 | Toshiba Corp | Fm demodulation circuit |
JP2507681B2 (en) * | 1990-07-10 | 1996-06-12 | 株式会社東芝 | FM demodulation circuit |
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