JPH0449393U

JPH0449393U -

Info

Publication number: JPH0449393U
Application number: JP8902390U
Authority: JP
Priority date: 1990-08-23
Filing date: 1990-08-23
Publication date: 1992-04-27

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係るラジカセ機器
のテープモータ駆動回路の回路図、第２図は従来
のラジカセ機器のテープモータ駆動回路の回路図
である。２……モータコントロール回路、４……電源入
力端子、Ｍ……テープ駆動モータ、Ｑ１……スイ
ツチングトランジスタ、ＳＷ１……カセツトメカ
メインスイツチ、ＳＷ２……フアンクシヨン切換
スイツチ、Ｃ１……モータ電源用電解コンデンサ
、Ｃ２……機器メイン電源用電解コンデンサ、Ａ
……第１の接点、Ｂ……第２の接点、ａ……テー
プポジシヨン、ｂ……ラジオポジシヨン、ｄ……
コモン端子、Ｌ……チヨークコイル、Ｒ１……電
流制限用抵抗。 FIG. 1 is a circuit diagram of a tape motor drive circuit for a radio-cassette player device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a tape motor drive circuit for a conventional radio-cassette player device. 2...Motor control circuit, 4...Power input terminal, M...Tape drive motor, Q1...Switching transistor, SW1...Cassette mechanical main switch, SW2...Function selector switch, C1...Motor power supply electrolyte Capacitor, C2...Electrolytic capacitor for equipment main power supply, A
...First contact, B...Second contact, a...Tape position, b...Radio position, d...
Common terminal, L...Chiyoke coil, R1...Resistor for current limiting.

Claims

[Claims for Utility Model Registration] Motor control circuit 2 consisting of a closed loop circuit of a tape drive motor M, a motor power supply electrolytic capacitor C1, and a switching transistor Q1.
and a function changeover switch SW that can switch between tape position a and radio position b.
2, an electrolytic capacitor C2 for the equipment main power supply connected to the common terminal d of this function changeover switch SW2, a first contact A connected to the radio position b and the power input terminal 4, and a second contact B connected to the radio position b and the power input terminal 4. a cassette mechanical main switch SW1 connected to the tape position a and connected to the base of the switching transistor Q1 via a current limiting resistor R1; and a positive terminal of the motor power supply electrolytic capacitor C1 and the function. 1. A tape motor drive circuit comprising a switch coil L inserted between a common terminal d of a changeover switch SW2 and a common terminal d of a changeover switch SW2.