JPS5550727A - Control circuit for tuning meter - Google Patents

Control circuit for tuning meter

Info

Publication number
JPS5550727A
JPS5550727A JP12428078A JP12428078A JPS5550727A JP S5550727 A JPS5550727 A JP S5550727A JP 12428078 A JP12428078 A JP 12428078A JP 12428078 A JP12428078 A JP 12428078A JP S5550727 A JPS5550727 A JP S5550727A
Authority
JP
Japan
Prior art keywords
trq
meter
tuning
control circuit
constitution
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
JP12428078A
Other languages
Japanese (ja)
Inventor
Shigeo Yamashita
Tatsuo Numata
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 JP12428078A priority Critical patent/JPS5550727A/en
Publication of JPS5550727A publication Critical patent/JPS5550727A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To let the tuning meter to indicate the center of scale other than FM reception, by the constitution that the tuning drive circuit is made inactive at AM reception.
CONSTITUTION: When the switch 8 is selected from FM∼AM band, the divided voltage in breeder ratio by resistors R10 and R11 is fed to the base of the transistor TrQ8 of the detection circuit 7 to turn on TrQ8. Accordingly, the control signal of high level is outputted to the collector to turn off the switch 4, and as a result, TrQ4, Q5 are both turned off and the current Miller circuit consisisting of TrQ1∼ Q3 is made inactive. Thus, TrQ1∼Q3, Q6, Q7 of the meter drive circuit 2 are all turned off, the impedance between the points A and B is infinite, no current flows to the meter 3, and the indication is at the center of scale.
COPYRIGHT: (C)1980,JPO&Japio
JP12428078A 1978-10-09 1978-10-09 Control circuit for tuning meter Pending JPS5550727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12428078A JPS5550727A (en) 1978-10-09 1978-10-09 Control circuit for tuning meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12428078A JPS5550727A (en) 1978-10-09 1978-10-09 Control circuit for tuning meter

Publications (1)

Publication Number Publication Date
JPS5550727A true JPS5550727A (en) 1980-04-12

Family

ID=14881423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12428078A Pending JPS5550727A (en) 1978-10-09 1978-10-09 Control circuit for tuning meter

Country Status (1)

Country Link
JP (1) JPS5550727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0332833U (en) * 1990-08-17 1991-03-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0332833U (en) * 1990-08-17 1991-03-29

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