JPS5454008A - Recording and reproducing circuit - Google Patents

Recording and reproducing circuit

Info

Publication number
JPS5454008A
JPS5454008A JP12031077A JP12031077A JPS5454008A JP S5454008 A JPS5454008 A JP S5454008A JP 12031077 A JP12031077 A JP 12031077A JP 12031077 A JP12031077 A JP 12031077A JP S5454008 A JPS5454008 A JP S5454008A
Authority
JP
Japan
Prior art keywords
switch
contact
inverters
reproducing
signals
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
JP12031077A
Other languages
Japanese (ja)
Inventor
Kazuo Ito
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP12031077A priority Critical patent/JPS5454008A/en
Publication of JPS5454008A publication Critical patent/JPS5454008A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a small circuit having an increased number of mechnical switches by changing the modes with the use of an electronic switch which is made coactive with the mechanical switches.
CONSTITUTION: When a switch 21 is connected with a contact P, the power supply to a bias oscillator 22 is blocked, and a control potential is lowered so that MOS inverters 25 and 26 of complementary type constituting an electronic switch have their P channels rendered conductive and so that inverters 27 to 29 have their N channels rendered conductive. As a result, the reproducing signals through a head 31 are impressed upon a reproducing amplifier 33 thereby to effect a reproducing condition. When the switch 21 is interchanged to a contact R, simultaneously with the power supply to the oscillator 22 and the change in the conducting conditions of the inverters 25 to 29, the recording signals which are prepared by adding a bias current to the signals from a speaker 35 are impressed upon the head 31. As a result, it is possible to provide a miniature mode interchanging circuit which uses a miniature mechanical switch of two-contact interchanging type without the use of a number of mechanical switches
COPYRIGHT: (C)1979,JPO&Japio
JP12031077A 1977-10-06 1977-10-06 Recording and reproducing circuit Pending JPS5454008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12031077A JPS5454008A (en) 1977-10-06 1977-10-06 Recording and reproducing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12031077A JPS5454008A (en) 1977-10-06 1977-10-06 Recording and reproducing circuit

Publications (1)

Publication Number Publication Date
JPS5454008A true JPS5454008A (en) 1979-04-27

Family

ID=14783063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12031077A Pending JPS5454008A (en) 1977-10-06 1977-10-06 Recording and reproducing circuit

Country Status (1)

Country Link
JP (1) JPS5454008A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5674851A (en) * 1979-11-21 1981-06-20 Seiko Instr & Electronics Ltd Electronic switch of tape recorder
US4810790A (en) * 1986-10-09 1989-03-07 Daikin Industries Ltd. 5-fluorouracil derivatives useful as carcinostatic substances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5674851A (en) * 1979-11-21 1981-06-20 Seiko Instr & Electronics Ltd Electronic switch of tape recorder
US4810790A (en) * 1986-10-09 1989-03-07 Daikin Industries Ltd. 5-fluorouracil derivatives useful as carcinostatic substances

Similar Documents

Publication Publication Date Title
JPS5454008A (en) Recording and reproducing circuit
JPS53140553A (en) Switching circuit
JPS51140421A (en) Self-oscillation mixer circuit
JPS5360624A (en) Waveform signal generator
JPS52119366A (en) Alarm electronic watch
JPS5288008A (en) Magnetic recording and reproduction apparatus
JPS53149307A (en) Electronic switching circuit
JPS5257815A (en) Automatic rhythm performance device
JPS5287011A (en) Magnetic erase head
JPS53103338A (en) Large-scale integrated circuit
JPS5263056A (en) Output signal switching circuit
JPS5680731A (en) Key input circuit
JPS6481533A (en) Base band signal switching circuit
JPS5424039A (en) Electro thermo-recorder
JPS53145503A (en) Voltage switch circuit
JPS521286A (en) Input switch circuit
JPS52128122A (en) Ultrasonic oscillator
JPS5366352A (en) Hdb-3 type bipolar signal generating circuit
JPS5467409A (en) Electronic switch for tape pecorder
JPS5412663A (en) Function generator
JPS54967A (en) Output circuit
JPS52147922A (en) Head switching signal generator circuit
JPS52123207A (en) Recording mode changing mechanism for tape recorder
JPS5485069A (en) Electronic time striking circuit
JPS52127128A (en) Generating circuit of cursor control signal