JPS5737807A - Protecting circuit for plunger - Google Patents

Protecting circuit for plunger

Info

Publication number
JPS5737807A
JPS5737807A JP11366680A JP11366680A JPS5737807A JP S5737807 A JPS5737807 A JP S5737807A JP 11366680 A JP11366680 A JP 11366680A JP 11366680 A JP11366680 A JP 11366680A JP S5737807 A JPS5737807 A JP S5737807A
Authority
JP
Japan
Prior art keywords
plunger
circuit
power source
electric power
voltage electric
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.)
Granted
Application number
JP11366680A
Other languages
Japanese (ja)
Other versions
JPS6217842B2 (en
Inventor
Hideaki Furuya
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.)
Akai Electric Co Ltd
Original Assignee
Akai Electric Co 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 Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Priority to JP11366680A priority Critical patent/JPS5737807A/en
Publication of JPS5737807A publication Critical patent/JPS5737807A/en
Publication of JPS6217842B2 publication Critical patent/JPS6217842B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/10—Manually-operated control; Solenoid-operated control

Abstract

PURPOSE:To obtain a protecting circuit for plunger having high reliability at low cost by a method wherein a high voltage electric power source is used when the movable part of plunger is made to be transferred in the prescribed direction by excitation, the power source is changed over to a low voltage electric power source to hold the plunger at that position after transference, and moreover a circuit to detect this operating condition is provided. CONSTITUTION:A tape running control part 11 is conected to an operating part 5 of a tape recorder having plural operating buttons 6-10, and an output signal sent out from this part is applied to a plunger driving circuit 12 to drive the plunger 3. The high voltage electric power source +B1 to make the movable part of the plunger 3 to tranfer in the prescribed direction and the low voltage electric power source +B2 to hold the movable part of plunger at than position after transference, a capacitor C1, transistors TR1-TR3, etc., are provided in this circuit 12. The detecting circuit part 13 consisted of a capacitor C2 having a different time constant and a transistor TR4 is connected to the circuit 12, change-over of applying voltage to the movable part of plunger is detected, and when the prescribed change-over is not perfomed, the circuit is made to have the stop mode.
JP11366680A 1980-08-18 1980-08-18 Protecting circuit for plunger Granted JPS5737807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11366680A JPS5737807A (en) 1980-08-18 1980-08-18 Protecting circuit for plunger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11366680A JPS5737807A (en) 1980-08-18 1980-08-18 Protecting circuit for plunger

Publications (2)

Publication Number Publication Date
JPS5737807A true JPS5737807A (en) 1982-03-02
JPS6217842B2 JPS6217842B2 (en) 1987-04-20

Family

ID=14618076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11366680A Granted JPS5737807A (en) 1980-08-18 1980-08-18 Protecting circuit for plunger

Country Status (1)

Country Link
JP (1) JPS5737807A (en)

Also Published As

Publication number Publication date
JPS6217842B2 (en) 1987-04-20

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