JPS58179643U

JPS58179643U - Tape recorder reel motor drive circuit

Info

Publication number: JPS58179643U
Application number: JP7585082U
Authority: JP
Inventors: 賢司城下
Original assignee: 三菱電機株式会社
Priority date: 1982-05-21
Filing date: 1982-05-21
Publication date: 1983-12-01

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は電動機を用いたテープレコーダρ側面図、第２
図は捉来の電動機の駆動回路図、第３図は第２図で用い
る電動機の特性曲線を示す図、第４図はこの考案の一実
施例による駆動回路図、第５−図はりｉルの巻き径比と
巻き取りトルクの特性図、第６図は第４図により得られ
た送り出し制御の特性図である。゛　　　　　　　　　
　　　　　　　−１はテープカセット、２は磁気テープ
、３けＴＵリール、４はＴＵ’リールディスク、５はＴ
Ｕモ　　。 −タ、６はｓｐリール、７はｓｐリールディスク、８は
ｓｐモータ、９はＴＵモータ主駆動回路、１０　　　′
はｓｐモータ主駆動回路、１１は電流検出回路、１２は
ｓｐモータ副駆動回路（送り出し制御回路）、１３は回
路切替器である。なお、Ｎｉ、同一符号は向−１又は相
当部分を示す。Figure 1 is a side view of a tape recorder ρ using an electric motor, Figure 2
Figure 3 is a diagram showing the characteristic curve of the electric motor used in Figure 2, Figure 4 is a drive circuit diagram according to an embodiment of this invention, Figure 5 is a diagram showing the characteristic curve of the motor used in Figure 2, and Figure 5 is a diagram showing the drive circuit of the motor used in Figure 2. FIG. 6 is a characteristic diagram of the feed-out control obtained from FIG. 4.゛
-1 is a tape cassette, 2 is a magnetic tape, 3 TU reel, 4 is a TU' reel disk, 5 is a T
Umo. 6 is the SP reel, 7 is the SP reel disk, 8 is the SP motor, 9 is the TU motor main drive circuit, 10'
1 is an SP motor main drive circuit, 11 is a current detection circuit, 12 is an SP motor sub drive circuit (feeding control circuit), and 13 is a circuit switch. Note that Ni and the same reference numerals indicate direction-1 or equivalent parts.

Claims

[Scope of utility model registration request]

In a reel motor drive circuit that drives a reel motor when picking up or rewinding a tape recorder, there are two motors that drive the reel on the take-up side and the reel on the supply side, respectively, and a motor main drive circuit that drives each of the above-mentioned motors, respectively. A current detection circuit detects the current flowing to the motor on the winding side of the two motors, and the motor is sent to the motor on the supply side according to the current detected by this current detection circuit. A reel motor drive circuit for a tape recorder, characterized by comprising a feed-out control circuit that applies a voltage for driving in a direction.