CN205681383U - A kind of electricity adjusts gain control circuit - Google Patents

A kind of electricity adjusts gain control circuit Download PDF

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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
Application number
CN201620620437.XU
Other languages
Chinese (zh)
Inventor
谢勇
刘玉兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PCT BROADBAND COMMUNICATION (YANTAI) CO Ltd
Original Assignee
PCT BROADBAND COMMUNICATION (YANTAI) CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PCT BROADBAND COMMUNICATION (YANTAI) CO Ltd filed Critical PCT BROADBAND COMMUNICATION (YANTAI) CO Ltd
Priority to CN201620620437.XU priority Critical patent/CN205681383U/en
Application granted granted Critical
Publication of CN205681383U publication Critical patent/CN205681383U/en
Priority to PCT/CN2017/088431 priority patent/WO2017219908A1/en
Priority to TW106209028U priority patent/TWM561963U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/20Automatic 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

A kind of electricity adjusts gain control circuit
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.
CN201620620437.XU 2016-06-22 2016-06-22 A kind of electricity adjusts gain control circuit Expired - Fee Related CN205681383U (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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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