JPS6255229U

JPS6255229U -

Info

Publication number: JPS6255229U
Application number: JP14646085U
Authority: JP
Priority date: 1985-09-25
Filing date: 1985-09-25
Publication date: 1987-04-06

Description

[Brief explanation of the drawing]

第１図は本考案のカセツト型テープレコーダー
の回路図、第２図は第１、第２及び第３のカセツ
トハーフの検知孔を説明するカセツトハーフ側面
図、第３図イ、ロは本考案の常開スイツチの検知
動作を説明する側面図、第４図イ、ロは本考案の
常閉スイツチの検知動作を説明する側面図である
。１０……テープ特性検知回路、１１……第１の
カセツトハーフ、１２……第２のカセツトハーフ
、１３……第１の検知孔、１６……第１のセンサ
ーアーム、１５……第３のカセツトハーフ、１４
……第２の検知孔、１７……第２のセンサーアー
ム、Ｓ_２……常開スイツチ、Ｓ_３……常閉スイツ
チ。 Fig. 1 is a circuit diagram of the cassette type tape recorder of the present invention, Fig. 2 is a side view of the cassette half illustrating the detection holes of the first, second and third cassette halves, and Fig. 3 A and B are the present invention. Figures 4A and 4B are side views illustrating the detection operation of the normally open switch of the present invention. DESCRIPTION OF SYMBOLS 10... Tape characteristic detection circuit, 11... First cassette half, 12... Second cassette half, 13... First detection hole, 16... First sensor arm, 15... Third cassette half. Cassette half, 14
...Second detection hole, 17...Second sensor arm, _S2 ...Normally open switch, _S3 ...Normally closed switch.

Claims

[Scope of utility model registration request]

In a tape recorder for playing back a cassette half having a detection hole that represents the characteristics of a magnetic tape, the first switch means comprises a normally open switch provided corresponding to the detection hole in the first position; a second switch means consisting of a normally closed switch provided corresponding to the detection hole located at position 2;
and a tape characteristic detection circuit comprising a transistor circuit which connects the second switch means to the base and obtains tape characteristic detection signals from the first and second switch means and the collector, respectively. type tape recorder.