CN205681383U - A kind of electricity adjusts gain control circuit - Google Patents
A kind of electricity adjusts gain control circuit Download PDFInfo
- Publication number
- CN205681383U CN205681383U CN201620620437.XU CN201620620437U CN205681383U CN 205681383 U CN205681383 U CN 205681383U CN 201620620437 U CN201620620437 U CN 201620620437U CN 205681383 U CN205681383 U CN 205681383U
- Authority
- CN
- China
- Prior art keywords
- control circuit
- electric capacity
- circuit
- resistance
- contact
- 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.)
- Expired - Fee Related
Links
- 230000005611 electricity Effects 0.000 title claims abstract description 12
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
Landscapes
- Attenuators (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
A kind of electricity adjusts gain control circuit, including attenuator circuit, control circuit one, control circuit two, it is characterized in that described attenuator circuit includes signal input part Input and signal output part Output, described signal input part Input passes through electric capacity one C30, one parallel circuit and electric capacity two C31 connect with signal output part Output, described parallel circuit is by resistance one R11, series circuit and a diode group of electric capacity C36 and resistance two R12 composition are formed in parallel, contact one J1 between described resistance one R11 and electric capacity C36 passes through resistance three R17 ground connection, contact two J2 between described control circuit one with diode group and electric capacity two C31 couples, described control circuit two couples with contact one.
Description
Technical field
This utility model relates to a kind of attenuator, particularly relates to a kind of electricity and adjusts gain control circuit.
Background technology
In TV antenna booster, if realizing gain-adjusted, space is smaller, uses mechanical attenuator to put not
Under, by the way of voltage, controlling PIN pipe so using, changing its resistance and realizing gain-adjusted.
Summary of the invention
For solving the difference of prior art, the utility model proposes a kind of electricity and adjust gain control circuit, including attenuator circuit,
Control circuit one, control circuit two, it is characterised in that described attenuator circuit includes signal input part Input and signal output part
Output, described signal input part Input are by electric capacity one C30, a parallel circuit and electric capacity two C31 and signal output part
Output connects, and described parallel circuit is the series circuit and one or two poles being made up of resistance one R11, electric capacity C36 and resistance two R12
Pipe group is formed in parallel, and contact one J1 between described resistance one R11 and electric capacity C36 passes through resistance three R17 ground connection, described control electricity
Contact two J2 between Lu Yiyu diode group and electric capacity two C31 couples, and described control circuit two couples with contact one.
Further, described diode group by positive and negative electrodes in same to two diodes form, forward current from signal export
End is to signal input part.
Technology of the present utility model is a little to realize the linear change of its resistance by changing the bias current of PIN pipe
Change, thus realize signal attenuation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
It is specially a kind of electricity according to this utility model shown in Fig. 1 and adjusts gain control circuit, including attenuator circuit, control circuit
One, control circuit two, it is characterised in that described attenuator circuit includes signal input part Input and signal output part Output, institute
State signal input part Input to be connected with signal output part Output by electric capacity one C30, a parallel circuit and electric capacity two C31, institute
State parallel circuit and be the series circuit being made up of resistance one R11, electric capacity C36 and resistance two R12 and a diode group is formed in parallel,
Contact one J1 between described resistance one R11 and electric capacity C36 passes through resistance three R17 ground connection, described control circuit one and diode
Contact two J2 between group and electric capacity two C31 couples, and described control circuit two couples with contact one J1, and described diode group is by positive and negative
Pole two diodes composition in the same direction, forward current from signal output part to signal input part.
Control circuit two comprises power supply two VCC, and this power supply two VCC is through electric capacity C38 ground connection, by R18 respectively through resistance R19
With electric capacity C39 ground connection, coupled with attenuator circuit contact one J1 through diode D15 and diode D14 by R18.
Control circuit one comprises power supply one VCC, and this power supply one VCC is through the resistive element of potentiometer VR2 and resistance R8 ground connection, electricity
Resistance body brush through electric capacity C21 and resistance R3 ground connection, also couples with attenuator circuit contact two J2 through inductance L18 respectively.
Claims (2)
1. electricity adjusts a gain control circuit, including attenuator circuit, control circuit one, control circuit two, it is characterised in that described
Attenuator circuit includes signal input part (Input) and signal output part (Output), and described signal input part (Input) is by electricity
Holding one (C30), a parallel circuit and electric capacity two (C31) to connect with signal output part (Output), described parallel circuit is by electricity
Series circuit and a diode group that resistance one (R11), electric capacity (C36) and resistance two (R12) form are formed in parallel, described resistance one
(R11) contact one (J1) and between electric capacity (C36) passes through resistance three (R17) ground connection, described control circuit one and diode group
With the contact two (J2) between electric capacity two (C31) couples, described control circuit two couples with contact one.
2. a kind of electricity as claimed in claim 1 adjusts gain control circuit, it is characterised in that described diode group is by positive and negative electrodes in same
To two diodes composition, forward current from signal output part to signal input part.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620620437.XU CN205681383U (en) | 2016-06-22 | 2016-06-22 | A kind of electricity adjusts gain control circuit |
PCT/CN2017/088431 WO2017219908A1 (en) | 2016-06-22 | 2017-06-15 | Electrically regulated gain control circuit |
TW106209028U TWM561963U (en) | 2016-06-22 | 2017-06-22 | Electrocircuit comprising means for gain controlled by voltage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620620437.XU CN205681383U (en) | 2016-06-22 | 2016-06-22 | A kind of electricity adjusts gain control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN205681383U true CN205681383U (en) | 2016-11-09 |
Family
ID=57431633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201620620437.XU Expired - Fee Related CN205681383U (en) | 2016-06-22 | 2016-06-22 | A kind of electricity adjusts gain control circuit |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN205681383U (en) |
TW (1) | TWM561963U (en) |
WO (1) | WO2017219908A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107137938A (en) * | 2017-06-07 | 2017-09-08 | 唐玉乐 | A kind of speech control system of toy car |
WO2017219908A1 (en) * | 2016-06-22 | 2017-12-28 | 贝思特宽带通讯(烟台)有限公司 | Electrically regulated gain control circuit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100480071B1 (en) * | 2002-11-12 | 2005-03-31 | 엘지전자 주식회사 | Variable attenuator |
CN2927336Y (en) * | 2006-02-28 | 2007-07-25 | 武汉丰天信息网络有限公司 | Interference circuit for radio-frequency amplifier |
CN205320044U (en) * | 2016-01-04 | 2016-06-15 | 安徽四创电子股份有限公司 | Programmable attenuator |
CN205681383U (en) * | 2016-06-22 | 2016-11-09 | 贝思特宽带通讯(烟台)有限公司 | A kind of electricity adjusts gain control circuit |
-
2016
- 2016-06-22 CN CN201620620437.XU patent/CN205681383U/en not_active Expired - Fee Related
-
2017
- 2017-06-15 WO PCT/CN2017/088431 patent/WO2017219908A1/en active Application Filing
- 2017-06-22 TW TW106209028U patent/TWM561963U/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017219908A1 (en) * | 2016-06-22 | 2017-12-28 | 贝思特宽带通讯(烟台)有限公司 | Electrically regulated gain control circuit |
CN107137938A (en) * | 2017-06-07 | 2017-09-08 | 唐玉乐 | A kind of speech control system of toy car |
Also Published As
Publication number | Publication date |
---|---|
WO2017219908A1 (en) | 2017-12-28 |
TWM561963U (en) | 2018-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205681383U (en) | A kind of electricity adjusts gain control circuit | |
CN101072013A (en) | Linear amplifier and its high power pulse power source | |
CN109104074A (en) | Switching Power Supply frequency conversion control circuit and its design method applied to new-energy automobile | |
CN103677050A (en) | Voltage-controlled constant flow source circuit | |
CN202083932U (en) | Multipath digital quantity input circuit based on Darlington transistor array | |
CN202550983U (en) | Monostable trigger capable of long-time delay | |
CN204462921U (en) | Improve the zero-temperature coefficient mu balanced circuit exporting load capacity | |
CN204859023U (en) | Low pressure automatic switching circuit | |
CN202353462U (en) | Voltage conversion circuit | |
CN206036345U (en) | Electromagnetic valve drive circuit | |
CN206574645U (en) | Unicoil magnetic latching relay and its drive circuit | |
CN204696381U (en) | A kind of electronic socket | |
CN204761772U (en) | High -efficient LED | |
CN204993059U (en) | Constant voltage power supply's output current control output voltage's circuit | |
CN202889316U (en) | Circuit for switch sensor | |
CN204516684U (en) | A kind of low-power relay holding circuit | |
CN204741304U (en) | Battery charging/ discharging management circuit and electric motor car | |
CN204203701U (en) | For the induction type light controlling device of novel optoelectronic materials research | |
CN204808094U (en) | Utilize stabilivolt generate current's electric current source | |
CN202363953U (en) | Constant current control circuit | |
CN206442555U (en) | Power LED street lamp power supply drops in Intelligent fixed time | |
CN205283463U (en) | Portable solar charging device | |
CN208539556U (en) | A kind of overload protecting circuit | |
CN201039092Y (en) | A linear amplifier and its power impulse power | |
CN207234412U (en) | Intelligent low-pressure combination switch |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PP01 | Preservation of patent right |
Effective date of registration: 20191018 Granted publication date: 20161109 |
|
PP01 | Preservation of patent right | ||
PD01 | Discharge of preservation of patent |
Date of cancellation: 20221018 Granted publication date: 20161109 |
|
PD01 | Discharge of preservation of patent | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 |
|
CF01 | Termination of patent right due to non-payment of annual fee |