JPS6164636U - - Google Patents
Info
- Publication number
- JPS6164636U JPS6164636U JP14982284U JP14982284U JPS6164636U JP S6164636 U JPS6164636 U JP S6164636U JP 14982284 U JP14982284 U JP 14982284U JP 14982284 U JP14982284 U JP 14982284U JP S6164636 U JPS6164636 U JP S6164636U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting diode
- changeover switch
- voltage dividing
- circuit
- 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
Links
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
Description
図示した回路は、本考案の再生方向表示回路の
一実施例である。
主な図番の説明、１…第１磁気ヘツド、２…第
２磁気ヘツド、３…選択増幅回路、４…前置増幅
回路、５…スイツチ回路、８…電源線路、１４…
主増幅回路、１８…電池、１９…切換スイツチ、
２０…第１分圧回路、２３…第１発光ダイオード
、２４…表示制御用トランジスター、２６…第２
分圧回路、２９…第２発光ダイオード、３０…切
換トランジスター。
The illustrated circuit is an embodiment of the reproduction direction display circuit of the present invention. Explanation of main drawing numbers: 1...First magnetic head, 2...Second magnetic head, 3 ...Selection amplifier circuit, 4...Preamplifier circuit, 5...Switch circuit, 8...Power supply line, 14...
Main amplifier circuit, 18... battery, 19... changeover switch,
20 ...First voltage dividing circuit, 23...First light emitting diode, 24...Display control transistor, 26 ...Second
Voltage dividing circuit, 29...second light emitting diode, 30...switching transistor.
Claims (1)
向である第２方向への再生機能を有するテープレ
コーダーにおいて、磁気テープの駆動方向に対応
して開閉される切換スイツチと、該切換スイツチ
が閉成状態にあるとき該切換スイツチにより電源
線路と接地間に直列接続される第１及び第２の抵
抗より成る第１分圧回路と、アノードが電源線路
に接続されていると共にカソードが前記第１分圧
回路の分圧点に接続されている第１発光ダイオー
ドと、前記切換スイツチが閉成状態にあるとき非
導通状態にあると共に開放状態にあるとき前記第
１分圧回路を通してバイアス電流が供給されて導
通状態になる表示制御用トランジスターと、該表
示用トランジスターが導通状態にあるとき該表示
制御用トランジスターにより電源線路と接地間に
直列接続される第１及び第２の抵抗より成る第２
分圧回路と、アノードが電源線路に接続されてい
ると共にカソードが前記第２分圧回路の分圧点に
接続されている第２発光ダイオードとより成り、
前記切換スイツチが閉成状態にあるときには前記
第１発光ダイオードを点灯せしめると共に該切換
スイツチが開放状態にあるときには前記第２発光
ダイオードを点灯せしめ、以つて該第１発光ダイ
オード及び第２発光ダイオードの点灯により磁気
テープの再生方向を表示するようにしたことを特
徴とする両方向再生機能付テープレコーダーの再
生方向表示回路。 A tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction includes a changeover switch that opens and closes in accordance with the direction in which the magnetic tape is driven; A first voltage dividing circuit comprising first and second resistors connected in series between the power line and ground by the changeover switch when in the closed state; A bias current is passed through a first light emitting diode connected to a voltage dividing point of the first voltage dividing circuit, and is in a non-conducting state when the changeover switch is in a closed state, and through the first voltage dividing circuit when it is in an open state. A second resistor comprising a display control transistor that is supplied with electricity and becomes conductive, and a first and second resistor that are connected in series between the power supply line and ground by the display control transistor when the display transistor is conductive.
comprising a voltage divider circuit and a second light emitting diode, the anode of which is connected to the power line and the cathode connected to the voltage division point of the second voltage divider circuit;
When the changeover switch is in the closed state, the first light emitting diode is turned on, and when the changeover switch is in the open state, the second light emitting diode is turned on, so that the first light emitting diode and the second light emitting diode are turned on. A playback direction display circuit for a tape recorder with a bidirectional playback function, characterized in that the playback direction of a magnetic tape is displayed by lighting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984149822U JPH0329787Y2 (en) | 1984-10-02 | 1984-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984149822U JPH0329787Y2 (en) | 1984-10-02 | 1984-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6164636U true JPS6164636U (en) | 1986-05-02 |
| JPH0329787Y2 JPH0329787Y2 (en) | 1991-06-25 |
Family
ID=30707990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984149822U Expired JPH0329787Y2 (en) | 1984-10-02 | 1984-10-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329787Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53124415U (en) * | 1977-03-11 | 1978-10-03 | ||
| JPS5787387U (en) * | 1980-11-14 | 1982-05-29 |
-
1984
- 1984-10-02 JP JP1984149822U patent/JPH0329787Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53124415U (en) * | 1977-03-11 | 1978-10-03 | ||
| JPS5787387U (en) * | 1980-11-14 | 1982-05-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329787Y2 (en) | 1991-06-25 |
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