JPS5567207A - Potential adjusting circuit of circuit connection point - Google Patents

Potential adjusting circuit of circuit connection point

Info

Publication number
JPS5567207A
JPS5567207A JP14147178A JP14147178A JPS5567207A JP S5567207 A JPS5567207 A JP S5567207A JP 14147178 A JP14147178 A JP 14147178A JP 14147178 A JP14147178 A JP 14147178A JP S5567207 A JPS5567207 A JP S5567207A
Authority
JP
Japan
Prior art keywords
potential
output
circuit
amplifier
scr
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
JP14147178A
Other languages
Japanese (ja)
Inventor
Hiroo Adachi
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP14147178A priority Critical patent/JPS5567207A/en
Publication of JPS5567207A publication Critical patent/JPS5567207A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To reduce the number of processes required for adjustment by automatizing adjustment of the output potential of a direct-coupled amplifier such as an OCL amplifier. CONSTITUTION:The output of direct-coupled OCL amplifier 1 drives speaker 2 as it is. When the potential of this output point B is shifted for a prescribed potential, a voltage proportional to the shift quantity is generated in output potential detection circuit 3. Output voltage C of this circuit 3 is inputted to time constant circuit 4 consisting of resistance R20 and capacitor C1 to operate a prescribed power source disconnection circuit. Output voltage C is applied to another time constant circuit 5 also, and the output is applied to SCR 7 and SCR 8. In case that the output potential of amplifier 1 is shifted from the ground potential to generate a DC voltage, SCR 6 is conductive first to connect resistance R5 in parallel to resistance R17, and therefore, the emitter potential of transistor Q4 is changed to change the potential of input A of amplifier 1.
JP14147178A 1978-11-16 1978-11-16 Potential adjusting circuit of circuit connection point Pending JPS5567207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14147178A JPS5567207A (en) 1978-11-16 1978-11-16 Potential adjusting circuit of circuit connection point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14147178A JPS5567207A (en) 1978-11-16 1978-11-16 Potential adjusting circuit of circuit connection point

Publications (1)

Publication Number Publication Date
JPS5567207A true JPS5567207A (en) 1980-05-21

Family

ID=15292648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14147178A Pending JPS5567207A (en) 1978-11-16 1978-11-16 Potential adjusting circuit of circuit connection point

Country Status (1)

Country Link
JP (1) JPS5567207A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2178184A1 (en) * 2008-01-15 2010-04-21 Shenzhen Skyworth-RGB Electronic Co., Ltd. Protection device for supply circuit with positive and negative double power

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2178184A1 (en) * 2008-01-15 2010-04-21 Shenzhen Skyworth-RGB Electronic Co., Ltd. Protection device for supply circuit with positive and negative double power
EP2178184A4 (en) * 2008-01-15 2011-06-29 Shenzhen Skyworth Rgb Elect Co Protection device for supply circuit with positive and negative double power

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