JPS5886693U - Automatic power cutoff device for electronic musical instruments - Google Patents
Automatic power cutoff device for electronic musical instrumentsInfo
- Publication number
- JPS5886693U JPS5886693U JP18152081U JP18152081U JPS5886693U JP S5886693 U JPS5886693 U JP S5886693U JP 18152081 U JP18152081 U JP 18152081U JP 18152081 U JP18152081 U JP 18152081U JP S5886693 U JPS5886693 U JP S5886693U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- electronic musical
- musical instrument
- automatic power
- cutoff device
- 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
Landscapes
- Electronic Switches (AREA)
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は、従来の電子楽器の電源自動遮断装置を示す回
路図、第2図は、この考案による電子楽器の電源自動遮
断装置を示すブロック図、第3図は、第2図の装置の一
具体例を示す回路図、第4図及び第5図は、第3図の回
路の変形例を示す要部回路図である。
10・・・・・・電源、12・・・・・・三端子形スイ
ッチ手段、−−−−−−−−−−i−
Q6
ヵレFIG. 1 is a circuit diagram showing a conventional automatic power cutoff device for an electronic musical instrument, FIG. 2 is a block diagram showing an automatic power cutoff device for an electronic musical instrument according to this invention, and FIG. 3 is a circuit diagram showing the automatic power cutoff device for an electronic musical instrument according to this invention. FIGS. 4 and 5 are circuit diagrams showing a specific example, and are principal part circuit diagrams showing a modification of the circuit shown in FIG. 3. 10...Power supply, 12...Three-terminal switch means,--------i- Q6 Calendar
Claims (1)
楽器回路が接続された三端子形のスイッチ手段と、 (b) このスイッチ手段の制御端に一端が接続され
た電源スィッチと、 (C) この電源スィッチの他端に接続され、該電源
スィッチのオン操作に応じて前記スイッチ手段を導通さ
せ且つその導通後自ら非導通となる起動回路と、 (d) 前記電源スィッチの一端又は他端に接続され
、前記スイッチ手段の導通開始後その導通状態を保持す
る保持回路と、 (e) 前記電源スィッチのオン後に計時を開始し、
リセットされればそのリセット後、リセットされなけれ
ば前記計時の開始後いずれも所定の時間が経過すること
を条件にして前記保持回路の保持動作を停止させる計時
回路と、 (f) 前記電子楽器回路から情報信号を検出し、該
情報信号が検出される限り前記計時回路をリセットさせ
る信号検出回路とをそなえたことを特徴とする電子楽器
の電源自動遮断装置。 2 実用新案登録請求の範囲第1項に記載の電子楽器の
電源自動遮断装置において、前記起動回路はコンデンサ
と抵抗とを直列接続した回路からなっていることを特徴
とする電子楽器の電源自動遮断装置。 3 実用新案登録請求の範囲第2項に記載の電子楽器の
電源自動遮断装置において、前記電源スィッチは前記起
動回路のコンデンサに放電路を提供するブレーク接点を
有することを特徴とする電子楽器の電源自動遮断装置。 4 実用新案登録請求の範囲第1項に記載の電子楽器の
電源自動遮断装置において、前記計時回路はコンデンサ
と、このコンデンサを前記III源スイッチのオン後充
電するための定電流源と、−1f7J記コンデンサの充
電電位が所定値に達したことを検知して前記保持回路の
保持動作を停止させる手段と、前記信号検出回路の出力
信号に応じて前記コンデンサを放電させるリセット手蕨
とをそなえていることを特徴とする電子楽器の電源自動
遮断装置。 − 5実用新案登録請求の範囲第1項に記載の電子楽器の電
源自動遮断装置において、前記計時回路は前記電源スィ
ッチのオン後パルスを発生するパルス発生器と、このパ
ルス発生器かラノ出力ハルスを計数するカウンタと、こ
のカウンタの計数値が所定値に達したことを検知して前
記保持回路の保持動作を停止させる手段とをそなえ、前
記パルス発生器及び前記カウンタのうち少なくとも前記
カウンタが前記信号検出回路の出力信号に応じてリセッ
トされるようになっていることを特徴とする電子楽器の
電源自動遮断装置。[Claims for Utility Model Registration] 1(a) A three-terminal switch means to which a power supply voltage is applied to the input end and an electronic musical instrument circuit connected to the output end, and (b) one end to the control end of the switch means. (C) a starting circuit connected to the other end of the power switch, which makes the switch means conductive in response to an on operation of the power switch, and becomes non-conductive by itself after the conduction; d) a holding circuit that is connected to one end or the other end of the power switch and maintains the conduction state after the switch means starts conducting; (e) starts measuring time after the power switch is turned on;
(f) a timekeeping circuit that stops the holding operation of the holding circuit on the condition that a predetermined period of time has elapsed after the reset if reset, or after the start of the timekeeping if not reset; (f) the electronic musical instrument circuit; 1. An automatic power cutoff device for an electronic musical instrument, comprising: a signal detection circuit that detects an information signal from a source and resets the timekeeping circuit as long as the information signal is detected. 2 Utility Model Registration Scope of Claim 1. The automatic power cutoff device for an electronic musical instrument as set forth in claim 1, wherein the startup circuit is comprised of a circuit in which a capacitor and a resistor are connected in series. Device. 3 Utility Model Registration Claim 2. The automatic power cutoff device for an electronic musical instrument as set forth in claim 2, wherein the power switch has a break contact that provides a discharge path to the capacitor of the startup circuit. Automatic shutoff device. 4 Utility Model Registration Scope of Claim 1 In the automatic power cut-off device for an electronic musical instrument, the timing circuit includes a capacitor, a constant current source for charging the capacitor after the III source switch is turned on, and -1f7J. means for detecting that the charging potential of the capacitor reaches a predetermined value and stopping the holding operation of the holding circuit; and a reset handrail for discharging the capacitor in response to an output signal of the signal detection circuit. An automatic power cutoff device for an electronic musical instrument, characterized in that: - 5 Utility Model Registration Scope of Claim 1. In the automatic power cutoff device for an electronic musical instrument according to claim 1, the time measurement circuit includes a pulse generator that generates a pulse after the power switch is turned on, and a pulse generator that generates a pulse generator that generates a pulse generator. and a means for detecting that the count value of the counter reaches a predetermined value and stopping the holding operation of the holding circuit, and of the pulse generator and the counter, at least the counter An automatic power cutoff device for an electronic musical instrument, characterized in that the device is reset in response to an output signal from a signal detection circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18152081U JPS5886693U (en) | 1981-12-05 | 1981-12-05 | Automatic power cutoff device for electronic musical instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18152081U JPS5886693U (en) | 1981-12-05 | 1981-12-05 | Automatic power cutoff device for electronic musical instruments |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5886693U true JPS5886693U (en) | 1983-06-11 |
JPS6326861Y2 JPS6326861Y2 (en) | 1988-07-20 |
Family
ID=29979074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18152081U Granted JPS5886693U (en) | 1981-12-05 | 1981-12-05 | Automatic power cutoff device for electronic musical instruments |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5886693U (en) |
-
1981
- 1981-12-05 JP JP18152081U patent/JPS5886693U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6326861Y2 (en) | 1988-07-20 |
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