JPS622742Y2 - - Google Patents
Info
- Publication number
- JPS622742Y2 JPS622742Y2 JP18351980U JP18351980U JPS622742Y2 JP S622742 Y2 JPS622742 Y2 JP S622742Y2 JP 18351980 U JP18351980 U JP 18351980U JP 18351980 U JP18351980 U JP 18351980U JP S622742 Y2 JPS622742 Y2 JP S622742Y2
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- transistor
- diode
- coil
- power source
- 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.)
- Expired
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
【考案の詳細な説明】
本考案は誤動作を防止したプランジヤ動作回路
に関する。[Detailed Description of the Invention] The present invention relates to a plunger operating circuit that prevents malfunctions.
一般にプランジヤは第1図に示す如く、コアー
1にコイル2を巻回し、該コイル2に電流を流す
ことによつて生じる磁気でもつて鉄片3を吸引
し、レバー4を作動させテープレコーダを再生状
態等にすることが行なわれている。斯るプランジ
ヤにおいて前記鉄片3を解除するのに単にコイル
2に流れる電流を遮断したのみでは一点鎖線で示
す様な磁気ループができ、鉄片3を解除できない
という問題がある。その対策としては磁気ループ
が形成されないように間隙を設ければよいが、間
隙を設けると吸着力が低下する。又逆方向に小電
流を流せば磁気ループを打ち消し容易に解除する
ことができるが、そのために従来は別にコイルを
設けたりしているので、回路及び構成が複雑とな
つた。 In general, a plunger, as shown in Fig. 1, involves winding a coil 2 around a core 1, attracting an iron piece 3 using the magnetism generated by passing a current through the coil 2, and operating a lever 4 to put the tape recorder into playback mode. etc. is being done. In such a plunger, there is a problem in that if the current flowing through the coil 2 is simply interrupted to release the iron piece 3, a magnetic loop as shown by the dashed line is created, and the iron piece 3 cannot be released. A countermeasure against this problem is to provide a gap to prevent the formation of a magnetic loop, but if a gap is provided, the attraction force will be reduced. Furthermore, by passing a small current in the opposite direction, the magnetic loop can be canceled out and easily released, but conventionally a separate coil has been provided for this purpose, which has complicated the circuit and configuration.
本考案は斯る欠点を除去したプランジヤ動作回
路を提供するもので、以下図面に従つて説明をす
る。 The present invention provides a plunger operating circuit which eliminates such drawbacks, and will be explained below with reference to the drawings.
5は電源、6は電源5間に直列接続されたダイ
オード7、プランジヤコイル8とトランジスタ9
とよりなる直列回路で、前記ダイオード7は電源
5に対して順方向に接続され、又トランジスタ9
のベースには再生釦(図示せず)に連動するスイ
ツチ10が接続されている。11は一端が電源5
の正極に、他端がプランジヤコイル8とトランジ
スタ9との接続点12に接続された第1抵抗で、
ダイオード7の順方向抵抗値に比して十分大きな
抵抗値を有する。13は一端がダイオード7とプ
ランジヤコイル8との接続点14に、他端が電源
5の共通電極となるアース極に夫々接続された第
2抵抗で、該第2抵抗13はプランジヤコイル8
の抵抗値より大きな抵抗値を有する。 5 is a power supply, 6 is a diode 7 connected in series between the power supply 5, a plunger coil 8 and a transistor 9.
The diode 7 is connected in the forward direction to the power supply 5, and the transistor 9
A switch 10 that is linked to a playback button (not shown) is connected to the base. 11 has one end connected to power supply 5
a first resistor whose other end is connected to the connection point 12 between the plunger coil 8 and the transistor 9;
It has a sufficiently large resistance value compared to the forward resistance value of the diode 7. 13 is a second resistor whose one end is connected to the connection point 14 between the diode 7 and the plunger coil 8 and the other end is connected to the ground electrode which becomes the common electrode of the power source 5;
has a resistance value greater than the resistance value of .
次に本考案の動作について説明をする。先ず再
生釦を押圧するとスイツチ10がオンされ、トラ
ンジスタ9もオンされる。すると電源5よりの電
流はダイオード7、プランジヤコイル8及びトラ
ンジスタ9のコレクタ−エミツタを通つて流れる
ので、プランジヤコイル8は励磁され、鉄片3を
吸着し、テープレコーダを再生状態にする。 Next, the operation of the present invention will be explained. First, when the playback button is pressed, the switch 10 is turned on, and the transistor 9 is also turned on. Then, the current from the power supply 5 flows through the diode 7, the plunger coil 8, and the collector-emitter of the transistor 9, so that the plunger coil 8 is energized, attracts the iron piece 3, and puts the tape recorder into a reproducing state.
再生が終了しスイツチ10をオフさせると、ト
ランジスタ9もオフされる。するとダイオード7
がオフされるので、今度は電源5よりの電流は第
1抵抗11を通つてプランジヤコイル8の下側か
ら上側に向つて流れ、さらに第2抵抗13を経て
電源5に戻る。従つて前記プランジヤコイル8に
はスイツチ10のオン時とは逆向きの電流が流れ
るので、プランジヤコイル8と鉄片とで形成され
ていた磁気ループが打消され、鉄片への吸着力は
解除され、前記鉄片はスプリング等の力によつて
コアより離れる。 When the reproduction is completed and the switch 10 is turned off, the transistor 9 is also turned off. Then diode 7
is turned off, this time the current from the power source 5 flows through the first resistor 11 from the bottom to the top of the plunger coil 8, and then returns to the power source 5 through the second resistor 13. Therefore, a current flows through the plunger coil 8 in the opposite direction to that when the switch 10 is turned on, so that the magnetic loop formed between the plunger coil 8 and the iron piece is canceled out, and the attraction force to the iron piece is released. The iron piece is separated from the core by the force of a spring or the like.
本考案のプランジヤ動作回路は上述した如く、
プランジヤコイルに直列に接続されたトランジス
タをオンさせると、前記プランジヤコイルに順方
向大電流が流れ、該プランジヤコイルを励磁し鉄
片を吸着することができ、又トランジスタをオフ
させることによつてプランジヤコイルに逆方向小
電流が流れ磁気ループを打消すようにしたので、
プランジヤーを容易に不動作状態にすることがで
きる。 As mentioned above, the plunger operating circuit of the present invention has the following features:
When the transistor connected in series to the plunger coil is turned on, a large forward current flows through the plunger coil, which excites the plunger coil and attracts the piece of iron, and when the transistor is turned off, the plunger coil A small current flows in the reverse direction to cancel the magnetic loop, so
The plunger can be easily rendered inoperative.
第1図は一般のプランジヤ装置の側面図、第2
図は本考案のプランジヤ動作回路図である。
5……電源、6……直列回路、7……ダイオー
ド、8……プランジヤコイル、9……トランジス
タ、11……第1抵抗、13……第2抵抗。
Figure 1 is a side view of a general plunger device, Figure 2
The figure is an operational circuit diagram of the plunger of the present invention. 5... Power supply, 6... Series circuit, 7... Diode, 8... Plunger coil, 9... Transistor, 11... First resistor, 13... Second resistor.
Claims (1)
うに直列接続されたダイオード、プランジヤコイ
ル及びトランジスタよりなる直列回路と、前記ト
ランジスタをオンオフさせるたのスイツチと、一
端が電源とダイオードとの接続点に接続され他端
がプランジヤコイルとトランジスタとの接続点に
接続された第1抵抗と、一端が前記ダイオードと
プランジヤコイルとの接続点に接続され他端が電
源の共通となるアース電極に接続された第2抵抗
とを備えるプランジヤ動作回路。 A series circuit consisting of a diode, a plunger coil, and a transistor connected in series between both ends of a power source in a forward direction with respect to the power source, a switch for turning the transistor on and off, and one end connecting the power source and the diode. a first resistor connected to the point and the other end connected to the connection point between the plunger coil and the transistor, one end connected to the connection point between the diode and the plunger coil, and the other end connected to a ground electrode that is a common power source. and a second resistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18351980U JPS622742Y2 (en) | 1980-12-19 | 1980-12-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18351980U JPS622742Y2 (en) | 1980-12-19 | 1980-12-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57106209U JPS57106209U (en) | 1982-06-30 |
JPS622742Y2 true JPS622742Y2 (en) | 1987-01-22 |
Family
ID=29982851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18351980U Expired JPS622742Y2 (en) | 1980-12-19 | 1980-12-19 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS622742Y2 (en) |
-
1980
- 1980-12-19 JP JP18351980U patent/JPS622742Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS57106209U (en) | 1982-06-30 |
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