JPH0119562Y2 - - Google Patents
Info
- Publication number
- JPH0119562Y2 JPH0119562Y2 JP3686284U JP3686284U JPH0119562Y2 JP H0119562 Y2 JPH0119562 Y2 JP H0119562Y2 JP 3686284 U JP3686284 U JP 3686284U JP 3686284 U JP3686284 U JP 3686284U JP H0119562 Y2 JPH0119562 Y2 JP H0119562Y2
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- circuit
- switch
- light emitting
- emitting diode
- 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
- 239000003990 capacitor Substances 0.000 claims description 29
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案は電源、バツテリーチエツク、周波数特
性（トーン）の切換え回路に関する。[Detailed description of the invention] (a) Industrial application field The present invention relates to a switching circuit for power supply, battery check, and frequency characteristics (tone).
(ロ) 従来技術
切換えスイツチの数を少なくして種々の機能切
換えを行う為の回路は種々提案されている。例え
ば、実開昭58−118596号に於いては、１回路３接
点スイツチによりラジオの受信状態の表示とバツ
テリー表示の切換えが達成されている。(b) Prior Art Various circuits have been proposed for switching various functions by reducing the number of switching switches. For example, in Japanese Utility Model Application No. 58-118596, switching between a radio reception status display and a battery display is achieved using a one-circuit three-contact switch.
(ハ) 考案の目的
本考案は、２回路３接点のスイツチを利用し
て、電源、バツテリーチエツク、周波数特性（ト
ーン）の切換えを行わんとするものである。(c) Purpose of the invention The present invention attempts to switch the power supply, battery check, and frequency characteristics (tone) using a switch with two circuits and three contacts.
(ニ) 考案の構成
２回路３接点のスイツチと、バツテリーチエツ
ク用の発光ダイオードと、この発光ダイオードを
駆動する為の第１コンデンサと、低周波増幅回路
の周波数特性を変化させるべく選択的に接続され
る周波数特性可変用の第２コンデンサと、駆動電
源とを設け、以下の通り構成したものである。即
ち、スイツチが第１位置にあるとき、スイツチの
第１回路は電源遮断状態となり、第１コンデンサ
はスイツチの第２回路により充電状態となる。ス
イツチが第２位置若しくは第３位置にあるときス
イツチの第１回路は何れも電源供給状態となる。
一方、スイツチの第２回路の第２位置に於いて、
第１コンデンサの充電電圧と駆動電源電圧の和が
発光ダイオードに印加される構成とし、バツテリ
ーチエツクを行う。また、このとき、第２コンデ
ンサは非接続状態となるよう構成する。更に、ス
イツチの第２回路の第３位置に於いて、第２コン
デンサが接続状態となるよう構成し、前記第２位
置とは異なる周波数特性の状態を設定する。(d) Structure of the invention A switch with 2 circuits and 3 contacts, a light emitting diode for battery check, a first capacitor for driving the light emitting diode, and a low frequency amplifier circuit are selectively connected to change the frequency characteristics. A second capacitor for variable frequency characteristics and a drive power source are provided, and the configuration is as follows. That is, when the switch is in the first position, the first circuit of the switch is turned off and the first capacitor is charged by the second circuit of the switch. When the switch is in the second or third position, the first circuit of the switch is powered on.
On the other hand, in the second position of the second circuit of the switch,
The configuration is such that the sum of the charging voltage of the first capacitor and the driving power supply voltage is applied to the light emitting diode, and a battery check is performed. Further, at this time, the second capacitor is configured to be in a disconnected state. Further, the second capacitor is configured to be connected at a third position of the second circuit of the switch, and a frequency characteristic state different from that at the second position is set.
(ホ) 実施例
図面に示す実施例は、ラジオ受信機の低周波増
幅段に本考案にかかる切換え回路を適用した例を
示している。(E) Embodiment The embodiment shown in the drawings shows an example in which the switching circuit according to the present invention is applied to a low frequency amplification stage of a radio receiver.
図に於いて、１は検波信号の入力端子、VRは
音量可変抵抗器、Ｑは増幅トランジスタ、C1は
カツプリングコンデンサ、C2はハイカツト用コ
ンデンサ、C3はトーン可変用ハイカツトコンデ
ンサ、２はイヤホンジヤツクである。C4はハイ
インピーダンスイヤホーン使用時の高周波成分を
カツトし、安定化する為のコンデンサである。
R1はバイアス用抵抗である。駆動電源３はニツ
ケル−カドミウム電池となつており、太陽電池４
にて充電される。 In the figure, 1 is the detection signal input terminal, VR is the volume variable resistor, Q is the amplification transistor, C1 is the coupling capacitor, C2 is the high-cut capacitor, C3 is the high-cut capacitor for tone variable, is an earphone jack. C4 is a capacitor that cuts out high frequency components and stabilizes when using high impedance earphones.
R1 is a bias resistor. The driving power source 3 is a nickel-cadmium battery, and the solar battery 4
It is charged at
さて、２回路３接点のスイツチＳがａ位置にあ
るとき、駆動電源３は、前段のRF／IF回路４に
は供給されない。また、充電用コンデンサC5に
はダイオードD2を介して駆動電源が印加され、
充電状態となる。このとき、保護用抵抗R2を介
して、バツテリーチエツク用発光ダイオードD1
にも駆動電源が印加されるが、発光ダイオード
D1を駆動するまでには至らない。 Now, when the 2-circuit 3-contact switch S is in the a position, the driving power source 3 is not supplied to the RF/IF circuit 4 at the previous stage. In addition, driving power is applied to the charging capacitor C5 via the diode D2 ,
It becomes charging state. At this time, the battery check light emitting diode D1 is connected to the battery check via the protective resistor R2 .
Drive power is also applied to the light emitting diode.
It does not reach the point of driving D1 .
次にスイツチＳをｂ位置に切換えると、第１回
路S1によりRF／IF回路４に駆動電源３が印加さ
れる。また、第２回路S2により、駆動電源３が抵
抗R3を介してコンデンサC5に印加される。する
と、抵抗R2と発光ダイオードD1には、それまで
コンデンサC5に貯えられていた充電電圧と駆動
電源電圧の和が一瞬印加される。従つて、駆動電
源３の電圧が所定レベル以上あれば、発光ダイオ
ードD1は瞬時点灯する。また、この状態に於い
て、コンデンサC3は未だ非接続状態にある。 Next, when the switch S is switched to the b position, the drive power 3 is applied to the RF/IF circuit 4 by the first circuit S1 . Further, the second circuit S 2 applies the drive power 3 to the capacitor C 5 via the resistor R 3 . Then, the sum of the charging voltage and the drive power supply voltage that had been stored in the capacitor C5 is momentarily applied to the resistor R2 and the light emitting diode D1 . Therefore, if the voltage of the driving power source 3 is at a predetermined level or higher, the light emitting diode D1 lights up instantaneously. Also, in this state, capacitor C3 is still in a disconnected state.
更に、スイツチＳをＣ位置に切換えると、第１
回路S1により、RF／IF回路５には相変らず駆動
電源３が印加される。また第２回路S2により、コ
ンデンサC3とコンデンサC5がコンデンサC2に対
して並列接続されることとなり、コンデンサC2
のみの場合より、余分にハイカツトが行われる。
即ち、周波数特性が変化する。 Furthermore, when the switch S is switched to the C position, the first
The driving power source 3 is still applied to the RF/IF circuit 5 by the circuit S1 . Also, by the second circuit S2 , capacitor C3 and capacitor C5 are connected in parallel to capacitor C2 , and capacitor C2
An extra high cut is made compared to when only the hair is cut.
That is, the frequency characteristics change.
尚、ダイオードD3は駆動電源３から太陽電池
４への逆流防止用ダイオードである。 Note that the diode D 3 is a diode for preventing backflow from the drive power source 3 to the solar cell 4 .
(ヘ) 考案の効果
本考案に依れば、２回路３接点のスイツチを唯
１個利用して、電源のオン・オフ、周波数特性の
切換え、バツテリーチエツクを行うことができ
る。(f) Effects of the invention According to the invention, it is possible to turn on and off the power, change the frequency characteristics, and check the battery using only one switch with two circuits and three contacts.
図面は、本考案にかかる切換え回路を示す。
Ｓはスイツチ、D1はバツテリーチエツク用の
発光ダイオード、C3はトーン可変用コンデンサ
（第２コンデンサ）、C5は充電用コンデンサ（第
１コンデンサ）、３は駆動電源。
The drawing shows a switching circuit according to the invention. S is the switch, D1 is the light emitting diode for battery check, C3 is the tone variable capacitor (second capacitor), C5 is the charging capacitor (first capacitor), and 3 is the drive power supply.
Claims (1)
ク用の発光ダイオードと、この発光ダイオードを
パルス駆動する為の第１コンデンサと、低周波増
幅回路の周波数特性を変化させるべく選択的に接
続される周波数特性可変用の第２コンデンサと、
駆動電源とを有し、 前記スイツチが第１位置にあるとき前記スイツ
チの第１回路は電源遮断状態になつており、且つ
前記第１コンデンサは第２回路により充電状態と
なつており、 前記スイツチが第２位置及び第３位置にあると
き前記スイツチの第１回路は何れも電源供給状態
になつており、且つ前記スイツチの第２回路の第
２位置に於いて前記第１コンデンサの充電電圧と
前記駆動電源電圧との和が前記発光ダイオードに
印加されるバツテリーチエツク状態となると共に
前記第２コンデンサは非接続状態にあり、一方第
２回路の第３位置に於いて前記第２コンデンサが
接続状態となることを特徴とする切換え回路。[Claims for Utility Model Registration] A 2-circuit 3-contact switch, a light emitting diode for battery check, a first capacitor for pulse driving the light emitting diode, and a selection to change the frequency characteristics of a low frequency amplifier circuit. a second capacitor for variable frequency characteristics connected to the
a driving power source; when the switch is in the first position, the first circuit of the switch is in a power-off state, and the first capacitor is in a charging state by a second circuit; is in the second position and the third position, both the first circuits of the switch are in the power supply state, and the charging voltage of the first capacitor is equal to the charging voltage of the first capacitor in the second position of the second circuit of the switch. The sum of the driving power supply voltage is applied to the light emitting diode, and the second capacitor is in a disconnected state, while the second capacitor is in a connected state at the third position of the second circuit. A switching circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3686284U JPS60147948U (en) | 1984-03-14 | 1984-03-14 | switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3686284U JPS60147948U (en) | 1984-03-14 | 1984-03-14 | switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60147948U JPS60147948U (en) | 1985-10-01 |
| JPH0119562Y2 true JPH0119562Y2 (en) | 1989-06-06 |
Family
ID=30542440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3686284U Granted JPS60147948U (en) | 1984-03-14 | 1984-03-14 | switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60147948U (en) |
-
1984
- 1984-03-14 JP JP3686284U patent/JPS60147948U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60147948U (en) | 1985-10-01 |
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