KR960026201U - Low voltage drop DC constant voltage circuit of video door phone - Google Patents

Low voltage drop DC constant voltage circuit of video door phone

Info

Publication number
KR960026201U
KR960026201U KR2019940039399U KR19940039399U KR960026201U KR 960026201 U KR960026201 U KR 960026201U KR 2019940039399 U KR2019940039399 U KR 2019940039399U KR 19940039399 U KR19940039399 U KR 19940039399U KR 960026201 U KR960026201 U KR 960026201U
Authority
KR
South Korea
Prior art keywords
door phone
video door
low voltage
voltage drop
constant voltage
Prior art date
Application number
KR2019940039399U
Other languages
Korean (ko)
Other versions
KR0120298Y1 (en
Inventor
박찬덕
Original Assignee
주식회사 씨.티.아이
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 주식회사 씨.티.아이 filed Critical 주식회사 씨.티.아이
Priority to KR2019940039399U priority Critical patent/KR0120298Y1/en
Publication of KR960026201U publication Critical patent/KR960026201U/en
Application granted granted Critical
Publication of KR0120298Y1 publication Critical patent/KR0120298Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H04N7/186—Video door telephones
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/234—Indexing scheme relating to amplifiers the input amplifying stage being one or more operational amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
KR2019940039399U 1994-12-31 1994-12-31 Low voltage down direct static voltage circuit of video doorphone KR0120298Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019940039399U KR0120298Y1 (en) 1994-12-31 1994-12-31 Low voltage down direct static voltage circuit of video doorphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019940039399U KR0120298Y1 (en) 1994-12-31 1994-12-31 Low voltage down direct static voltage circuit of video doorphone

Publications (2)

Publication Number Publication Date
KR960026201U true KR960026201U (en) 1996-07-22
KR0120298Y1 KR0120298Y1 (en) 1998-07-15

Family

ID=19405515

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019940039399U KR0120298Y1 (en) 1994-12-31 1994-12-31 Low voltage down direct static voltage circuit of video doorphone

Country Status (1)

Country Link
KR (1) KR0120298Y1 (en)

Also Published As

Publication number Publication date
KR0120298Y1 (en) 1998-07-15

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee