JPS59103421A - Pulse delay circuit - Google Patents

Pulse delay circuit

Info

Publication number
JPS59103421A
JPS59103421A JP21436582A JP21436582A JPS59103421A JP S59103421 A JPS59103421 A JP S59103421A JP 21436582 A JP21436582 A JP 21436582A JP 21436582 A JP21436582 A JP 21436582A JP S59103421 A JPS59103421 A JP S59103421A
Authority
JP
Japan
Prior art keywords
pulse signal
base
input
transistor
output
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.)
Pending
Application number
JP21436582A
Other languages
Japanese (ja)
Inventor
Shigemitsu Yamade
山出 重光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP21436582A priority Critical patent/JPS59103421A/en
Publication of JPS59103421A publication Critical patent/JPS59103421A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K5/00Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01Shaping pulses
    • H03K5/04Shaping pulses by increasing duration; by decreasing duration

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Pulse Circuits (AREA)

Abstract

PURPOSE:To attain the delay of a pulse wave and magnification/shrinking of a pulse width by giving an input to a base and emitter and extracting an output from a collector. CONSTITUTION:When an input pulse signal is 0, a base voltage is biased reversely and a transistor(TR)6 is turned off. An output pulse signal is also 0. When an input pulse signal rises, the base voltage rises instantly, but it falls down gradually as the charge of a capacitor 7 is discharged through a resistor 10. When the base voltage reaches a voltage slightly lower than a power supply voltage, the base and emitter are biased forward and the TR6 is turned on. As a result, the output pulse signal rises. When the input pulse signal reaches 0, the output pulse signal falls down to 0. Since the temperature characteristic of the TR6 is compensated for the temperature by a diode 11, the stable operation is realized.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、電子機器の電気回路において、パルス信号の
遅延や、パルス幅の拡大・縮小を行うとき等に使用でき
るパルス遅延回路に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pulse delay circuit that can be used to delay a pulse signal, expand or reduce the pulse width, etc. in an electric circuit of an electronic device.

従来例の構成とその問題点 最も簡単なパルス遅延回路の例として、第1図に示すよ
うな回路が従来から用いられている。この回路は、抵抗
1とコンデンサ2とにより入カバ2 ・・−ジ ルス信号を積分し、これをダイオード3を介してトラン
ジスタ4に加えてスイッチングすることにより波形整形
して、負荷抵抗6から遅延した出力パルス信号を得るも
のである。なお3はしきい値電圧を上げるだめのダイオ
ードである。
Conventional Structure and Problems The circuit shown in FIG. 1 has been used as an example of the simplest pulse delay circuit. This circuit integrates an incoming cover signal by a resistor 1 and a capacitor 2, and adds this signal to a transistor 4 via a diode 3 and then switches it to shape the waveform, which is then delayed from a load resistor 6. This is to obtain an output pulse signal. Note that 3 is a diode for increasing the threshold voltage.

ところが、この回路では、トランジスタ4の電流増幅率
HFE やペースエミッタ間電圧vBE のバラツキや
温度による変化によりトランジスタ4がオン・オフする
しきい値が変化してしまい遅延時間の精度が悪い、トラ
ンジスタ4で反転増幅する結果として出力パルス信号は
入力パルス信号と極性が逆になってしまい、同極性の出
力パルス信号が必要なときにもう一度反転する回路が必
要となる、等の欠点があった。
However, in this circuit, the threshold value at which transistor 4 turns on and off changes due to variations in the current amplification factor HFE and pace-emitter voltage vBE of transistor 4, and changes due to temperature, resulting in poor delay time accuracy. As a result of inverting and amplifying the output pulse signal, the polarity of the output pulse signal becomes opposite to that of the input pulse signal, and when an output pulse signal of the same polarity is required, a circuit for inverting the signal once again is required.

発明の目的 本発明は、かかる従来の欠点を解消して、構成が簡単で
、遅延時間が安定であり、かつ入力パルス信号と同極性
のパルス信号を出力することのできるパルス遅延回路を
提供することを目的とする。
OBJECTS OF THE INVENTION The present invention solves these conventional drawbacks and provides a pulse delay circuit that has a simple configuration, stable delay time, and is capable of outputting a pulse signal having the same polarity as an input pulse signal. The purpose is to

発明の構成 3 ・・−ジ 本発明は電源とアース間に接続した分圧抵抗によりトラ
ンジスタのベースに直流バイアス電圧を与え、このベー
スと入力端子間をコンデンサで接続して入力パルス信号
を微分信号をベースに加え、かつエミッタには直接人力
パルス信号を加えるようにして、コレクタから遅延した
出力パルス信号を得るものであり、簡IF−な回路で、
入力と同極性の安定な遅延時間の出力パルス信号が得ら
れる。
Structure 3 of the Invention The present invention applies a DC bias voltage to the base of the transistor using a voltage dividing resistor connected between the power supply and the ground, and connects the base and the input terminal with a capacitor to convert the input pulse signal into a differential signal. is added to the base, and a manual pulse signal is directly applied to the emitter to obtain a delayed output pulse signal from the collector.It is a simple IF circuit.
An output pulse signal with the same polarity as the input and a stable delay time can be obtained.

実施例の説明 本発明の第1の実施例の構成を第2図に示す。Description of examples The configuration of the first embodiment of the present invention is shown in FIG.

第2図において、トランジスタ6のエミッタには入力パ
ルス信号をそのまま加える。一方、トランジスタ6のベ
ースにはコンデンサ7により入力パルス信号を微分した
信号を加えるようにし、コレクタ負荷抵抗8の両端より
出力信号を得る。なお、抵抗9,10はトランジスタ6
のベースバイアス用に電源とアース間に接続した分圧抵
抗、11は温度補償ダイオードである。
In FIG. 2, the input pulse signal is directly applied to the emitter of the transistor 6. On the other hand, a signal obtained by differentiating the input pulse signal is applied to the base of the transistor 6 by a capacitor 7, and an output signal is obtained from both ends of the collector load resistor 8. Note that the resistors 9 and 10 are the transistor 6.
A voltage dividing resistor is connected between the power supply and ground for base bias, and 11 is a temperature compensation diode.

この回路の動作を第3図の波形図を用いて説明する。第
3図は、入力パルス信号としてAのような波形の信号を
加えたときのトランジスタ6のベースの波形Bと出力パ
ルス信号の波形Cを示すものである。
The operation of this circuit will be explained using the waveform diagram in FIG. FIG. 3 shows the waveform B of the base of the transistor 6 and the waveform C of the output pulse signal when a signal having a waveform like A is added as an input pulse signal.

最初に、入力パルス信号Aが0であるときには、ベース
の電圧Bは電源電圧Vcc  を抵抗9と抵抗1oで分
割した電圧にほぼ等しい定常電圧M(V〕になっている
。従って、ベース・エミッタ間は逆バイアスでアリ、ト
ランジスタ6はオフ状態にあり、出力パルス信号Cの電
圧も0である。
First, when the input pulse signal A is 0, the base voltage B is a steady voltage M (V) that is approximately equal to the voltage obtained by dividing the power supply voltage Vcc by the resistor 9 and the resistor 1o. During this period, the transistor 6 is in an off state with a reverse bias, and the voltage of the output pulse signal C is also 0.

次に、時刻1=11で、入力パルス信号Aが0からVc
c  に立ち上がると、この瞬間にベース電圧Bも最初
は(M+Vcc)まで立ち上がるが、コンデンサ7の電
荷が抵抗1oを通して放電するに従って除々に下降する
。そして、時刻t−t2でベース電圧Bがycc より
やや低い電位になると、ベース・エミッタ間が逆バイア
スから順バイアスに変わり、トランジスタ6が導通する
。この結果、出力パルス信号Cはt=t2で0からVc
c  に立ち上がる。
Next, at time 1=11, the input pulse signal A changes from 0 to Vc
At this moment, the base voltage B also rises to (M+Vcc) at first, but gradually falls as the charge in the capacitor 7 is discharged through the resistor 1o. Then, at time t-t2, when the base voltage B becomes a potential slightly lower than ycc, the base-emitter bias changes from reverse bias to forward bias, and transistor 6 becomes conductive. As a result, the output pulse signal C changes from 0 to Vc at t=t2.
stand up at c.

次に、t−13で入力パルス信号Aが再び0に5 ペー
ジ なると、出力パルス信号Cも直ちに0となる。
Next, at t-13, when the input pulse signal A becomes 0 again for 5 pages, the output pulse signal C also immediately becomes 0.

このようくして、入力パルス信号Aに対する出力パルス
信号Cは入力パルス信号Aの立ち上がりのエツジが遅延
された波形の出力パルス信号Cとなる。
In this way, the output pulse signal C corresponding to the input pulse signal A becomes an output pulse signal C having a waveform in which the rising edge of the input pulse signal A is delayed.

又、パルス幅を考えれば、入力パルス信号Aが正極性の
パルスであるとするとパルス幅ハ(t3−11)から(
13−12)に縮小されたことになり、一方、入力パル
ス信号Aが負極性のパルスであるとすればパルス幅1l
−1:(t4−13)から(15−13)に拡大された
ことになる。
Also, considering the pulse width, if the input pulse signal A is a positive polarity pulse, the pulse width can be calculated from (t3-11) to (
13-12). On the other hand, if the input pulse signal A is a negative polarity pulse, the pulse width is 1l.
-1: This means that (t4-13) has been expanded to (15-13).

なお遅延時間t、は、コンデンサ7をC(F)、抵抗1
oをR〔Ω〕、抵抗9をr〔Ω〕 とすれば、で表わさ
れる。
Note that the delay time t is determined by the capacitor 7 being C(F) and the resistor 1 being C(F).
If o is R [Ω] and the resistance 9 is r [Ω], then it is expressed as follows.

ダイオード11は、トランジスタ6のベース・エミッタ
間電圧vBE の温度特性を補償し、遅延時間をより一
層安定化する。又、トランジスタ6のHFEは遅延時間
にほとんど影響しない。従っ67、−ノ で、この回路の遅延時間はきわめて安定したものとなる
The diode 11 compensates for the temperature characteristics of the base-emitter voltage vBE of the transistor 6 and further stabilizes the delay time. Further, the HFE of the transistor 6 has almost no effect on the delay time. Therefore, the delay time of this circuit is extremely stable.

なお、第2図の実施例は入力パルス信号の立ち上がりの
エツジを遅延させるものであるが、立チ下がりのエツジ
を遅延させたいときには、第4図に示したように、トラ
ンジスタ6としてNPN型トランジスタを用いればよい
The embodiment shown in FIG. 2 delays the rising edge of the input pulse signal, but when it is desired to delay the falling edge of the input pulse signal, an NPN transistor is used as the transistor 6, as shown in FIG. You can use

発明の効果 本発明によれば以下のような効果が得られる。Effect of the invention According to the present invention, the following effects can be obtained.

■ 簡単な回路でパルス波の遅延・パルス幅の拡大・縮
小ができる。
■ A simple circuit can delay pulse waves and expand/reduce pulse width.

■ 遅延時間が安定である。■ Delay time is stable.

■ 入出力のパルスの極性が同じである。■ The polarity of input and output pulses are the same.

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

第1図は従来例のパルス遅延回路の回路図、第2図およ
び第4図はおのおの本発明の実施例におけるパルス遅延
回路の回路図、第3図は第2図のパルス遅延回路におけ
る入力パルス信号、ベース電圧及び出力パルス信号の波
形図である。  −6・・・・・・トランジスタ、7・
・・・・・コンデンサ、7ペ、−ジ 8・・・・・・抵抗、9,10・・・・・・負荷抵抗、
11・・  ・・・・・ダイオード。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
FIG. 1 is a circuit diagram of a conventional pulse delay circuit, FIGS. 2 and 4 are circuit diagrams of pulse delay circuits according to embodiments of the present invention, and FIG. 3 is an input pulse in the pulse delay circuit of FIG. 2. FIG. 3 is a waveform diagram of a signal, a base voltage, and an output pulse signal. -6...Transistor, 7.
...Capacitor, 7 pin, -J8...Resistor, 9,10...Load resistance,
11... Diode. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

【特許請求の範囲】[Claims] トランジスタのベースに電源とアース間に設けた分圧抵
抗により直流バイアスを印加するとともに、微分用コン
デンサを介して上記ベースに入力パルス信号を加えかつ
上記トランジスタのエミッタ1だ直接上記入力信号を加
え、上記トランジスタのコレクタから出力パルス信号を
出力するようにしたパルス遅延回路。
Applying a DC bias to the base of the transistor through a voltage dividing resistor provided between the power supply and ground, applying an input pulse signal to the base via a differential capacitor, and directly applying the input signal to the emitter 1 of the transistor, A pulse delay circuit configured to output an output pulse signal from the collector of the above transistor.
JP21436582A 1982-12-06 1982-12-06 Pulse delay circuit Pending JPS59103421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21436582A JPS59103421A (en) 1982-12-06 1982-12-06 Pulse delay circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21436582A JPS59103421A (en) 1982-12-06 1982-12-06 Pulse delay circuit

Publications (1)

Publication Number Publication Date
JPS59103421A true JPS59103421A (en) 1984-06-14

Family

ID=16654577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21436582A Pending JPS59103421A (en) 1982-12-06 1982-12-06 Pulse delay circuit

Country Status (1)

Country Link
JP (1) JPS59103421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2744109A1 (en) * 2012-12-14 2014-06-18 Palo Alto Research Center Incorporated Pulse generator circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531032A (en) * 1976-06-18 1978-01-07 Matsushita Electric Ind Co Ltd Device for letter printing of recording paper by electric current

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531032A (en) * 1976-06-18 1978-01-07 Matsushita Electric Ind Co Ltd Device for letter printing of recording paper by electric current

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2744109A1 (en) * 2012-12-14 2014-06-18 Palo Alto Research Center Incorporated Pulse generator circuit
US9172357B2 (en) 2012-12-14 2015-10-27 Palo Alto Research Center Incorporated Pulse generator circuit

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