JPS54152951A - Detection circuit - Google Patents
Detection circuitInfo
- Publication number
- JPS54152951A JPS54152951A JP6109178A JP6109178A JPS54152951A JP S54152951 A JPS54152951 A JP S54152951A JP 6109178 A JP6109178 A JP 6109178A JP 6109178 A JP6109178 A JP 6109178A JP S54152951 A JPS54152951 A JP S54152951A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- diode
- zener
- resistance
- trq
- 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 obtain a detection circuit with a low distortion rate, by providing a unidirectional element which makes use of Zener characteristics at pn junction, and a biasing method for this element in addition to a time-constant circuit at the output side of this element.
CONSTITUTION: As a unidirectional element, Zener diode DZ1 is used and at its output side, the time-constant circuit of resistance R1 and capacitor C1 connected in parallel is provided as a smoothing circuit so as to constitute the detection circuit. At the input side, the emitter follower circuit is provided which consists of transistor TrQ and resistance R5. To the base of TrQ, input signal (ein) to be detected is applied via capacitor C2. The voltage divider circuit is provided which consists of resistances R2 to R4 for developing the bias voltage of diode DZ1 and resistance R4 is adjusted so that the base coltage of TrQ will become equal to the constant base-emitter voltage of Zener voltage VZ1+Q of diode DZ1. Since operation impedance characteristics of the Zener diode are excellently linear as shown in the figure, output distortion lessens and the distortion ratio never lowers even if a smallamplitude input is supplied.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6109178A JPS54152951A (en) | 1978-05-24 | 1978-05-24 | Detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6109178A JPS54152951A (en) | 1978-05-24 | 1978-05-24 | Detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54152951A true JPS54152951A (en) | 1979-12-01 |
Family
ID=13161056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6109178A Pending JPS54152951A (en) | 1978-05-24 | 1978-05-24 | Detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54152951A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207609A (en) * | 1990-11-30 | 1992-07-29 | Nec Corp | Detection circuit |
-
1978
- 1978-05-24 JP JP6109178A patent/JPS54152951A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207609A (en) * | 1990-11-30 | 1992-07-29 | Nec Corp | Detection circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5515512A (en) | Constant voltage output circuit | |
JPS54152951A (en) | Detection circuit | |
JPS5643808A (en) | Signal converting circuit | |
JPS555552A (en) | Dc reproducing circuit | |
JPS5739424A (en) | Reference voltage source | |
JPS5753108A (en) | Amplifying circuit | |
JPS54125049A (en) | Transistor circuit | |
JPS5654117A (en) | Schmitt circuit | |
JPS5497465A (en) | Current detecting circuit | |
JPS56168243A (en) | Constant-voltage circuit | |
JPS55163461A (en) | Absolute value detection circuit | |
JPS5515511A (en) | Constant current circuit | |
JPS5660357A (en) | Voltage detecting circuit | |
JPS55131822A (en) | Constant-voltage circuit | |
JPS5543643A (en) | Constant voltage circuit | |
JPS5597723A (en) | Impedance converting circuit | |
JPS5580127A (en) | Constant-voltage circuit | |
JPS54125081A (en) | Voltage-current converter | |
JPS5698914A (en) | Amplifier of low distortion factor | |
JPS55137716A (en) | Level shift circuit | |
JPS54143850A (en) | Stabilizing power source circuit | |
JPS5721109A (en) | Amplifier | |
JPS5567660A (en) | Power maker circuit | |
JPS5593376A (en) | White clip circuit | |
JPS56168417A (en) | Amplifier |