JPS5487154A - Impedance conversion circuit - Google Patents

Impedance conversion circuit

Info

Publication number
JPS5487154A
JPS5487154A JP15448377A JP15448377A JPS5487154A JP S5487154 A JPS5487154 A JP S5487154A JP 15448377 A JP15448377 A JP 15448377A JP 15448377 A JP15448377 A JP 15448377A JP S5487154 A JPS5487154 A JP S5487154A
Authority
JP
Japan
Prior art keywords
base
output
input
collector
trq1
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
Application number
JP15448377A
Other languages
Japanese (ja)
Inventor
Hitomi Tojiki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15448377A priority Critical patent/JPS5487154A/en
Publication of JPS5487154A publication Critical patent/JPS5487154A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/28—Impedance matching networks

Landscapes

  • Networks Using Active Elements (AREA)

Abstract

PURPOSE:To reduce the level difference between input and output at the impedance conversion circuit, by inputting to the base of one transistor of the differential amplifying circuit and outputting after taking common the base and collector of another transistor. CONSTITUTION:The base of TrQ1 of the differential amplifying circuit consisting of NPN transistors TrQ1,Q2 is taken as input and the base and collector of another TrQ2 are taken as output after being in common. To lower the output impedance and match the input and output level, the base and the collector of TrQ2 are connected and negative feedback is given. Further, to make complete this matching, TrQ1,Q2 are made to the same size, keeping equal to the base to emitter voltage characteristics, and the collector current is kept the same by making the same size for the constant current load PNP TrQ3 and Q4. Thus, the level difference between the input and output signals can be reduced.
JP15448377A 1977-12-23 1977-12-23 Impedance conversion circuit Pending JPS5487154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15448377A JPS5487154A (en) 1977-12-23 1977-12-23 Impedance conversion circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15448377A JPS5487154A (en) 1977-12-23 1977-12-23 Impedance conversion circuit

Publications (1)

Publication Number Publication Date
JPS5487154A true JPS5487154A (en) 1979-07-11

Family

ID=15585222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15448377A Pending JPS5487154A (en) 1977-12-23 1977-12-23 Impedance conversion circuit

Country Status (1)

Country Link
JP (1) JPS5487154A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109596874A (en) * 2018-10-31 2019-04-09 电子科技大学 A kind of impedance inverter circuit of driving capability enhancing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109596874A (en) * 2018-10-31 2019-04-09 电子科技大学 A kind of impedance inverter circuit of driving capability enhancing
CN109596874B (en) * 2018-10-31 2020-10-16 电子科技大学 Impedance transformation circuit with enhanced driving capability

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