JPS6236331Y2 - - Google Patents

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Publication number
JPS6236331Y2
JPS6236331Y2 JP1979066149U JP6614979U JPS6236331Y2 JP S6236331 Y2 JPS6236331 Y2 JP S6236331Y2 JP 1979066149 U JP1979066149 U JP 1979066149U JP 6614979 U JP6614979 U JP 6614979U JP S6236331 Y2 JPS6236331 Y2 JP S6236331Y2
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Japan
Prior art keywords
voltage comparator
input terminal
capacitor
oscillator
terminal
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Expired
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JP1979066149U
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Japanese (ja)
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JPS55165502U (en
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  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)

Description

【考案の詳細な説明】 本考案は発振器兼用低周波増幅器に関するもの
である。[Detailed Description of the Invention] The present invention relates to a low frequency amplifier that also serves as an oscillator.

テープデツキ付ラジオチユーナー等に於いて、
ラジオチユーナーに音声出力をテープデツキで録
音するときの録音レベルをチエツクするために、
テープデツキにはVUメーターが、又ラジオチユ
ーナーには録音レベルチエツク用発振器が設けら
れたものが数多く出回つている。 For radio tuners with tape decks, etc.
To check the recording level when recording the audio output to the radio tuner with a tape deck,
Many tape decks are equipped with VU meters, and many radio tuners are equipped with oscillators for checking recording levels.

ところが従来の斯種機器に於いては、録音レベ
ルチエツク用発振器を別途設けなければならない
ので、部品点数が多くなり、コストが高くなつて
いた。 However, in conventional devices of this kind, an oscillator for checking the recording level must be separately provided, which increases the number of parts and increases the cost.

本考案は斯る点に鑑み、ラジオチユーナー等の
低周波増幅器を構成する電圧比較器を発振器に兼
用することにより、上記欠点を解消する様にした
もので、以下本考案の一実施例を第１図、第２図
に従い説明する。 In view of this, the present invention is designed to eliminate the above-mentioned drawbacks by using a voltage comparator that constitutes a low-frequency amplifier such as a radio tuner as an oscillator. This will be explained with reference to FIGS. 1 and 2.

１は第１の電圧比較器（オペアンプ）で、後述
するがFMステレオ左（LEFT）信号増幅用の低
周波増幅器と、録音レベルチエツク用発振器とを
兼用する。２は第２の電圧比較器（オペアンプ）
で、FMステレオ右（RIGHT）信号増幅用の低周
波増幅器として動作する。R1，R2は正の電源
（＋Ｂ）とアース（基準電位点）Ｅとの間に直列
接続した抵抗、R3は該抵抗R1，R2の接続点３と
第１の電圧比較器１の第１入力端子（反転入力端
子）I1との間に設けた抵抗、R4は接続点３と第１
の電圧比較器１の第２入力端子（非反転入力端
子）I2との間に設けた抵抗、R3′は接続点３と第
２の電圧比較器２の第１入力端子（反転入力端
子）I1′との間に設けた抵抗、R4′は接続点３と第
２の電圧比較器２の第２入力端子（非反転入力端
子）I2′との間に設けた抵抗で、之等抵抗R1，
R2，R3，R4，R3′，R4′によつて第１第２の電圧
比較器１，２のバイアスを設定している。C4は
バイアス設定用抵抗R2に並列に接続したコンデ
ンサ、R5，R5′は各電圧比較器１，２の出力端子
４，５と、第１入力端子I1，I1′との間に夫々接続
した帰還抵抗である。VR1，C3は正の電源（＋
Ｂ）とアースＥとの間に直列接続した可変抵抗器
及びコンデンサ、D1は該可変抵抗器VR1及びコン
デンサC3の接続点６と第１の電圧比較器１の第
１入力端子I1その間に接続したダイオード、C2は
一端が第１の電圧比較器１の第１入力端子I1に接
続されたコンデンサで、之等可変抵抗器VR1、コ
ンデンサC3，C2、及びダイオードD1は後述する
が、第１の電圧比較器１を発振器として動作させ
るときの発振器構成素子である。 Reference numeral 1 denotes a first voltage comparator (operational amplifier), which will be described later, but serves both as a low frequency amplifier for amplifying the FM stereo left (LEFT) signal and as an oscillator for checking the recording level. 2 is the second voltage comparator (op amp)
It operates as a low frequency amplifier for FM stereo right (RIGHT) signal amplification. R 1 and R 2 are resistors connected in series between the positive power supply (+B) and earth (reference potential point) E, and R 3 is the connection point 3 of the resistors R 1 and R 2 and the first voltage comparator. The resistor R4 is connected between the connection point 3 and the first input terminal (inverting input terminal) I1 .
The resistor R 3 ' is connected between the connection point 3 and the second input terminal (non-inverting input terminal) I 2 of the voltage comparator 1 and the first input terminal (inverting input terminal) of the second voltage comparator 2. ) I 1 ′, and R 4 ′ is the resistance provided between the connection point 3 and the second input terminal (non-inverting input terminal) I 2 ′ of the second voltage comparator 2. The equivalent resistance R 1 ,
The bias of the first and second voltage comparators 1 and 2 is set by R 2 , R 3 , R 4 , R 3 ′ , and R 4 ′. C 4 is a capacitor connected in parallel to the bias setting resistor R 2 , and R 5 and R 5 ' are the capacitors connected between the output terminals 4 and 5 of each voltage comparator 1 and 2 and the first input terminals I 1 and I 1 '. A feedback resistor is connected between the two. VR 1 and C 3 are positive power supplies (+
A variable resistor and a capacitor connected in series between B) and earth E, D 1 is the connection point 6 of the variable resistor VR 1 and capacitor C 3 and the first input terminal I 1 of the first voltage comparator 1. The diode C 2 connected between them is a capacitor whose one end is connected to the first input terminal I 1 of the first voltage comparator 1 , including the variable resistor VR 1 , the capacitors C 3 , C 2 , and the diode D 1 , which will be described later, is an oscillator component when the first voltage comparator 1 is operated as an oscillator.

S1，S2，S3は第１の電圧比較器１を低周波増幅
器として動作させるか、発振器として動作させる
かを選択する第１〜第３の切換スイツチである。
該第１の切換スイツチS1は、共通端子COMが第
１の電圧比較器１の第２入力端子I2に接続され、
増幅器側固定端子ａが直流分カツト用コンデンサ
C1を介して左信号入力端子７に接続され、発振
器側固定端子ｂがコンデンサC2の他端に接続さ
れている。第２の切換スイツチS2は、共通端子
COMがアースＥに接続され、増幅器側固定端子
ａが、可変抵抗器VR1、ダイオードD1、及びコン
デンサC3の接続点６に接続され、発振器側固定
端子ｂが右信号入力端子８に接続されている。第
３の切換スイツチS3は、共通端子COMが抵抗
R6′及びコンデンサC5′を介して右信号出力端子１
０に接続され、増幅器側固定端子ａが第２の電圧
比較器２の出力端子５に接続され、発振器側固定
端子ｂが第１の電圧比較器１の出力端子４に接続
されている。C1′は右信号入力端子８と第２の電
圧比較器２の第２入力端子I2′との間に接続した
直流分カツト用コンデンサ、VR2は第１の電圧比
較器１の第１入力端子I1と第２の電圧比較器２の
第１入力端子I1′との間に接続したFMステレオ左
右信号のセパレーシヨン調整用抵抗、R6，C5は
第１の電圧比較器１の出力端子４と、左信号出力
端子９との間に直列接続した抵抗及びコンデンサ
である。 S 1 , S 2 , and S 3 are first to third changeover switches for selecting whether the first voltage comparator 1 is operated as a low frequency amplifier or an oscillator.
The first changeover switch S 1 has a common terminal COM connected to a second input terminal I 2 of the first voltage comparator 1;
Fixed terminal a on the amplifier side is a DC cut capacitor
It is connected to the left signal input terminal 7 via C1 , and the oscillator side fixed terminal b is connected to the other end of the capacitor C2 . The second changeover switch S 2 is a common terminal
COM is connected to earth E, amplifier side fixed terminal a is connected to connection point 6 of variable resistor VR 1 , diode D 1 and capacitor C 3 , and oscillator side fixed terminal b is connected to right signal input terminal 8. has been done. The third changeover switch S3 has a common terminal COM with a resistance
Right signal output terminal 1 via R 6 ′ and capacitor C 5 ′
0, the amplifier side fixed terminal a is connected to the output terminal 5 of the second voltage comparator 2, and the oscillator side fixed terminal b is connected to the output terminal 4 of the first voltage comparator 1. C 1 ' is a DC cut capacitor connected between the right signal input terminal 8 and the second input terminal I 2 ' of the second voltage comparator 2; Resistors R 6 and C 5 are connected between the input terminal I 1 and the first input terminal I 1 ′ of the second voltage comparator 2 for adjusting the separation of the FM stereo left and right signals. A resistor and a capacitor are connected in series between the output terminal 4 of the left signal output terminal 9 and the left signal output terminal 9.

尚、第１第２の電圧比較器１，２のバイアス設
定用抵抗R3，R3′，R4，R4′、帰還抵抗R5，R5′、
直流分カツト用コンデンサC1，C1′左右信号出力
端子９，１０に接続された抵抗R6，R6′及びコン
デンサC5，C5′は夫々、R3＝R3′，R4＝R4′R5＝
R5′、R6＝R6′、C1＝C1′，C5＝C5′となる様選択さ
れている。 In addition, the bias setting resistors R 3 , R 3 ′, R 4 , R 4 ′ of the first and second voltage comparators 1 and 2, feedback resistors R 5 , R 5 ′,
The DC cut capacitors C 1 and C 1 ′ are connected to the left and right signal output terminals 9 and 10, and the resistors R 6 and R 6 ′ and the capacitors C 5 and C 5 ′ are R 3 = R 3 ′, R 4 = R 4 ′R 5 =
They are selected so that R 5 ′, R 6 =R 6 ′, C 1 =C 1 ′, and C 5 =C 5 ′.

次に斯様に構成してなる発振器兼用低周波増幅
器の動作について説明する。 Next, the operation of the oscillator/low frequency amplifier configured in this manner will be explained.

切換スイツチS1，S2，S3を増幅器側（ａ側）に
設定したとき。 When selector switches S 1 , S 2 , and S 3 are set to the amplifier side (a side).

このとき電圧比較器１，２は低周波増幅器とし
て動作する。 At this time, voltage comparators 1 and 2 operate as low frequency amplifiers.

即ち第２の切換スイツチS2をａ側に接続するこ
とにより、ダイオードD1と可変抵抗器VR1の接続
点６がアースＥに接続され、ダイオードD1は逆
バイアスとなるので、ダイオードD1、可変抵抗
器VR1及びコンデンサC3は第１第２の電圧比較器
１，２とは無関係となり、又第１の切換スイツチ
S1によりコンデンサC2も他端が開放されるの
で、第１第２の電圧比較器１，２とは無関係とな
る。 That is, by connecting the second changeover switch S2 to the a side, the connection point 6 between the diode D1 and the variable resistor VR1 is connected to the ground E, and the diode D1 becomes reverse biased . , the variable resistor VR 1 and the capacitor C 3 are independent of the first and second voltage comparators 1 and 2, and the first changeover switch
Since the other end of the capacitor C 2 is also opened by S 1 , it becomes unrelated to the first and second voltage comparators 1 and 2 .

従つてこのときの等価回路は第２図イの様にな
り、第１の電圧比較器１の第２入力端子I2に低周
波信号が印加されて、第１の電圧比較器１は通常
の低周波増幅器（FMステレオ左信号増幅用の低
周波増幅器）として動作する。同様に第２の電圧
比較器２も第２図イに図示しないが、FMステレ
オ右信号増幅用の低周波増幅器として動作する。 Therefore, the equivalent circuit at this time is as shown in Fig. 2A, where a low frequency signal is applied to the second input terminal I2 of the first voltage comparator 1, and the first voltage comparator 1 operates as normal. Operates as a low frequency amplifier (low frequency amplifier for FM stereo left signal amplification). Similarly, the second voltage comparator 2, although not shown in FIG. 2A, operates as a low frequency amplifier for amplifying the FM stereo right signal.

次に切換スイツチS1，S2，S3を発振器側（ｂ
側）に設定したとき。 Next, changeover switches S 1 , S 2 , and S 3 are set to the oscillator side (b
side).

このとき第１の切換スイツチS1によりコンデン
サC1が切離されるとともに、第１の電圧比較器
１の第１及び第２入力端子I1，I2間に第１のコン
デンサC2が接続される。又第１の電圧比較器１
の第１入力端子I1には可変抵抗器VR1、及びダオ
ードD1を介して＋Ｂ電圧が印加される。従つて
ダイオードD1は順方向となり、第２のコンデン
サC3が第１の電圧比較器１の第１入力端子I1とア
ースＥとの間に接続されることになる。又第２の
切換スイツチS2はコンデンサC1′側に接続され、
第２の電圧比較器２の第２の入力端子I2′がコン
デンサC1′を介してアースされる。これは第１第
２の電圧比較器１，２がセパレーシヨン調整用可
変抵抗器VR2で接続されており、第２の電圧比較
器２の影響が現われる虞れがあるので、これを防
止する為である。更に第３の切換スイツチS3が第
２電圧比較器２の出力側から第１の電圧比較器１
の出力側に切換わり、左信号出力端子９、右信号
出力端子１０共に第１の電圧比較器１の出力端子
４に接続されることになる。 At this time, the capacitor C 1 is disconnected by the first changeover switch S 1 and the first capacitor C 2 is connected between the first and second input terminals I 1 and I 2 of the first voltage comparator 1. Ru. Also, the first voltage comparator 1
A +B voltage is applied to the first input terminal I 1 of the circuit via a variable resistor VR 1 and a diode D 1 . The diode D 1 is therefore forward-oriented and the second capacitor C 3 is connected between the first input terminal I 1 of the first voltage comparator 1 and the earth E. Also, the second changeover switch S2 is connected to the capacitor C1 ' side,
A second input terminal I 2 ' of the second voltage comparator 2 is grounded via a capacitor C 1 '. This is because the first and second voltage comparators 1 and 2 are connected by the separation adjustment variable resistor VR 2 , and there is a risk that the influence of the second voltage comparator 2 will appear, so this is prevented. It is for this purpose. Furthermore, a third changeover switch S3 switches the output side of the second voltage comparator 2 to the first voltage comparator 1.
The left signal output terminal 9 and the right signal output terminal 10 are both connected to the output terminal 4 of the first voltage comparator 1.

従つてこの時の等価回路は第２図ロに示す様に
なり、第１の電圧比較器１は録音レベルチエツク
用発振器とて動作する。 Therefore, the equivalent circuit at this time is as shown in FIG. 2B, and the first voltage comparator 1 operates as an oscillator for checking the recording level.

尚、可変抵抗器VR1は発振出力レベルの調整用
であり、該可変抵抗器にて第１の電圧比較器１の
第１入力端子I1のバイアス電圧レベルを変化させ
て第１の電圧比較器１の動作点を移動させ、発振
出力レベルを加減している。 The variable resistor VR 1 is used to adjust the oscillation output level, and the bias voltage level of the first input terminal I 1 of the first voltage comparator 1 is changed using the variable resistor to perform the first voltage comparison. The operating point of the device 1 is moved to adjust the oscillation output level.

次に第１の電圧比較器１を録音レベルチエツク
用発振器として動作させるときの動作について述
べる。 Next, the operation when the first voltage comparator 1 is operated as a recording level check oscillator will be described.

電圧比較器の第１入力端子と第２入力端子との
間にコンデンサを接続することによつて通常電圧
比較器は、発振器として動作する。ところで本考
案の回路の場合、第１の電圧比較器１は低周波増
幅器と発振器とに兼用しているので、バイアス設
定用抵抗の抵抗値が限定される。又発振周波数は
コンデンサC2の値によつて決定する必要があ
り、発振周波数の条件等からコンデンサC2は数
μＦになる可能性が強いが、コンデンサC2の値
が大きくなると発振しにくくなり、不安定とな
る。そこで第１の電圧比較器１の第１入力端子I1
とアースＥとの間にコンデンサC3を接続するこ
とにより、負帰還量を減らしてやると安定した発
振出力を得ることが出来る。然しあまりコンデン
サC3の値を大きくすると、発振出力が方形波と
なり、録音レベルチエツク用発振器として不適当
になるので、適当な値に設定し、正弦波に近い発
振出力を得る必要がある。更に発振出力レベルは
前述した通り、可変抵抗器VR1を調整することに
よつて可変出来る。これは第１の電圧比較器１の
第１入力端子I1の電位を強制的に第２入力端子I2
の電位よりも高くすることによつて行なつてお
り、第２図ロの回路の場合、第２図イの回路に較
べて第１の電圧比較器１の出力端子４の直流電圧
は可変抵抗器VR1の値に応じて低くなつている。 A voltage comparator typically operates as an oscillator by connecting a capacitor between the first and second input terminals of the voltage comparator. In the case of the circuit of the present invention, the first voltage comparator 1 serves both as a low frequency amplifier and an oscillator, so the resistance value of the bias setting resistor is limited. Also, the oscillation frequency must be determined by the value of capacitor C2 , and depending on the oscillation frequency conditions, there is a strong possibility that capacitor C2 will be several μF, but the larger the value of capacitor C2 , the harder it will be to oscillate. , it becomes unstable. Therefore, the first input terminal I 1 of the first voltage comparator 1
By connecting a capacitor C3 between this and earth E, the amount of negative feedback can be reduced and a stable oscillation output can be obtained. However, if the value of capacitor C3 is too large, the oscillation output will become a square wave, making it unsuitable as an oscillator for recording level checking, so it is necessary to set it to an appropriate value to obtain an oscillation output close to a sine wave. Furthermore, the oscillation output level can be varied by adjusting the variable resistor VR1 , as described above. This forces the potential at the first input terminal I 1 of the first voltage comparator 1 to the second input terminal I 2
In the case of the circuit shown in FIG. 2B, compared to the circuit shown in FIG. The value of VR is lower depending on the value of 1 .

そしてメーカー側から最終的に製品として出荷
する場合には、発振出力がFM放送の50％変調信
号に相当する様に可変抵抗器VR1を調整する。 When the manufacturer finally ships the product, the variable resistor VR 1 is adjusted so that the oscillation output corresponds to the 50% modulation signal of the FM broadcast.

尚、本実施例では第１の電圧比較器１の第１入
力端子I1の電位を可変抵抗器VR1で調整すること
により発振出力を調整したが、斯る実施例に限ら
ず、例えば第１の電圧比較器１の出力端子４側に
可変抵抗器を設けて発振出力を調整する様にして
もよい。 In this embodiment, the oscillation output is adjusted by adjusting the potential of the first input terminal I 1 of the first voltage comparator 1 with the variable resistor VR 1 , but the oscillation output is not limited to this embodiment. A variable resistor may be provided on the output terminal 4 side of the voltage comparator 1 to adjust the oscillation output.

尚、ユーザーが第１の電圧比較器１を録音レベ
ルチツク用発振器として使用する時の操作手順は
次に様に行なう。 The operating procedure when the user uses the first voltage comparator 1 as a recording level check oscillator is as follows.

先ずラジオチユーナーの音声出力をテープデツ
キで録音する前に、切換スイツチS1，S2，S3を発
振器側（ｂ側）に設定する。この時発振器の出力
は、FM放送の50％変調信号に相当しているの
で、出力端子９，１０に接続したテープデツキ
（図示せず）の録音入力調整用可変抵抗器を調整
し、VUメーター（図示せず）の指針をOdBに合
わせる。次に切換スイツチS1，S2，S3を増幅器側
（ａ側）の戻し、ラジオチユーナーの音声出力を
録音する。 First, before recording the audio output of the radio tuner with a tape deck, selector switches S 1 , S 2 , and S 3 are set to the oscillator side (b side). At this time, the output of the oscillator corresponds to the 50% modulation signal of FM broadcasting, so adjust the variable resistor for adjusting the recording input of the tape deck (not shown) connected to output terminals 9 and 10, and adjust the VU meter ( Adjust the pointer (not shown) to OdB. Next, changeover switches S 1 , S 2 , and S 3 are returned to the amplifier side (side a), and the audio output from the radio tuner is recorded.

以上の様に本考案に依れば、低周波増幅器とし
て動作する電圧比較器を、切換スイツチの切換え
により発振器として動作させることが出来るの
で、部品点数を削減し、コストダウンを図ること
が出来る。而も発振器として動作させたときには
正弦波に近い発振出力を得ることが出来るので、
例えば録音レベルチエツク用発振器として用いれ
ば極めて好適である。 As described above, according to the present invention, a voltage comparator that operates as a low-frequency amplifier can be operated as an oscillator by switching the changeover switch, thereby reducing the number of parts and reducing costs. Moreover, when operated as an oscillator, it is possible to obtain an oscillation output close to a sine wave.
For example, it is extremely suitable for use as an oscillator for checking recording levels.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係る発振器兼用低周波増幅器
を示す回路結線図、第２図イ，ロは第１図の回路
を低周波増幅器として動作させる場合、及び発振
器として動作させる場合を夫々示す等価回路図で
ある。 １……電圧比較器、I1……第１入力端子、I2…
…第２入力端子、S1，S2，S3……切換スイツチ、
C2……第１のコンデンサ、C3……第２のコンデ
ンサ。 Figure 1 is a circuit connection diagram showing the oscillator-cum-low-frequency amplifier according to the present invention, and Figures 2A and 2B are equivalent diagrams showing cases in which the circuit in Figure 1 is operated as a low-frequency amplifier and as an oscillator, respectively. It is a circuit diagram. 1... Voltage comparator, I 1 ... First input terminal, I 2 ...
...Second input terminal, S 1 , S 2 , S 3 ... Selector switch,
C 2 ... first capacitor, C 3 ... second capacitor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 第１、第２入力端子を備えた高利得の電圧比較
器と、この電圧比較器の出力端子と第１入力端子
間に接続された帰還抵抗と、この第１、第２入力
端子に夫々接続されるバイアス設定用抵抗と、前
記電圧比較器の第２入力端子に接続された切換ス
イツチと、この切換スイツチの一方の固定端子と
前記第１入力端子間に接続された第１コンデンサ
と、前記第１入力端子と基準電位点との間に選択
的に接続される負帰還量調整用の第２コンデンサ
とを備え、前記切換スイツチが一方の固定端子側
に設定された場合には、前記第１入力端子と第２
入力端子との間に第１コンデンサを接続すると共
に前記第１入力端子と基準電位点との間に負帰還
量調整用の第２コンデンサを接続し、以つて電圧
比較器を発振器として動作させ、前記切換スイツ
チが他方の固定端子側に設定された場合には、前
記電圧比較器の第２入力端子に前記切換スイツチ
を介して低周波信号を印加し、以つて前記電圧比
較器を低周波増幅器として動作させるようにした
ことを特徴とする発振器兼用低周波増幅器。 a high-gain voltage comparator having first and second input terminals; a feedback resistor connected between the output terminal of the voltage comparator and the first input terminal; and a feedback resistor connected to the first and second input terminals, respectively. a bias setting resistor connected to the second input terminal of the voltage comparator; a first capacitor connected between one fixed terminal of the changeover switch and the first input terminal; A second capacitor for adjusting the amount of negative feedback is selectively connected between the first input terminal and the reference potential point, and when the changeover switch is set to one of the fixed terminals, the 1 input terminal and 2nd
A first capacitor is connected between the input terminal and a second capacitor for adjusting the amount of negative feedback is connected between the first input terminal and a reference potential point, thereby operating the voltage comparator as an oscillator, When the changeover switch is set to the other fixed terminal side, a low frequency signal is applied to the second input terminal of the voltage comparator via the changeover switch, thereby converting the voltage comparator into a low frequency amplifier. A low frequency amplifier that also serves as an oscillator, characterized in that it is operated as an oscillator.
JP1979066149U 1979-05-16 1979-05-16 Expired JPS6236331Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979066149U JPS6236331Y2 (en) 1979-05-16 1979-05-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979066149U JPS6236331Y2 (en) 1979-05-16 1979-05-16

Publications (2)

Publication Number Publication Date
JPS55165502U JPS55165502U (en) 1980-11-28
JPS6236331Y2 true JPS6236331Y2 (en) 1987-09-16

Family

ID=29300122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979066149U Expired JPS6236331Y2 (en) 1979-05-16 1979-05-16

Country Status (1)

Country Link
JP (1) JPS6236331Y2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8841307B2 (en) 2000-08-04 2014-09-23 Ampio Pharmaceuticals, Inc. Method of using diketopiperazines and composition containing them
US8871772B2 (en) 2008-05-27 2014-10-28 Ampio Pharmaceuticals, Inc. Therapeutic methods and compounds
US8962568B2 (en) 2003-05-15 2015-02-24 Ampio Pharmaceuticals, Inc. Treatment of T-cell mediated diseases
US8980834B2 (en) 2011-10-10 2015-03-17 Ampio Pharmaceuticals, Inc. Treatment of degenerative joint disease
US9034878B2 (en) 2010-09-07 2015-05-19 Ampio Pharmaceuticals, Inc. Treatment of diseases

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS599443Y2 (en) * 1973-12-28 1984-03-26 松下電器産業株式会社 alarm generator
JPS5162605A (en) * 1974-11-20 1976-05-31 Matsushita Electric Industrial Co Ltd Hatsushinkairo

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8841307B2 (en) 2000-08-04 2014-09-23 Ampio Pharmaceuticals, Inc. Method of using diketopiperazines and composition containing them
US8916568B2 (en) 2000-08-04 2014-12-23 Ampio Pharmaceuticals, Inc. Method of using diketopiperazines and composition containing them
US9561226B2 (en) 2000-08-04 2017-02-07 Ampio Pharmaceuticals, Inc. Method of using diketopiperazines and composition containing them
US8962568B2 (en) 2003-05-15 2015-02-24 Ampio Pharmaceuticals, Inc. Treatment of T-cell mediated diseases
US8969308B2 (en) 2003-05-15 2015-03-03 Ampio Pharmaceuticals, Inc. Treatment of T-cell mediated diseases
US8871772B2 (en) 2008-05-27 2014-10-28 Ampio Pharmaceuticals, Inc. Therapeutic methods and compounds
US9522893B2 (en) 2008-05-27 2016-12-20 Ampio Pharmaceuticals, Inc. Therapeutic methods and compounds
US9034878B2 (en) 2010-09-07 2015-05-19 Ampio Pharmaceuticals, Inc. Treatment of diseases
US8980834B2 (en) 2011-10-10 2015-03-17 Ampio Pharmaceuticals, Inc. Treatment of degenerative joint disease
US9060968B2 (en) 2011-10-10 2015-06-23 Ampio Pharmaceuticals, Inc. Treatment of degenerative joint disease

Also Published As

Publication number Publication date
JPS55165502U (en) 1980-11-28

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