JPH0374366U - - Google Patents
Info
- Publication number
- JPH0374366U JPH0374366U JP13554389U JP13554389U JPH0374366U JP H0374366 U JPH0374366 U JP H0374366U JP 13554389 U JP13554389 U JP 13554389U JP 13554389 U JP13554389 U JP 13554389U JP H0374366 U JPH0374366 U JP H0374366U
- Authority
- JP
- Japan
- Prior art keywords
- pulse signal
- measurement frequency
- reference voltage
- pulse width
- shot circuit
- 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
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の１実施例の構成を示すブロツ
ク図、第２図、第３図は第１図に示す実施例の動
作を説明する波形図、第４図は従来の電力トラン
スデユーサの構成を示すブロツク図、第５図は第
４図に示す電力トランスデユーサの動作を説明す
る特性図である。
１０……波形整形回路、１１……１シヨツト回
路、１２……加算・積分回路、１３……１シヨツ
ト回路、ｆｉ……測定周波数、Ｐ１，Ｐ２……パ
ルス信号、Ｖ１，Ｖ２……出力電圧。
FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention, FIGS. 2 and 3 are waveform diagrams explaining the operation of the embodiment shown in FIG. 1, and FIG. 4 is a conventional power transducer. FIG. 5 is a characteristic diagram illustrating the operation of the power transducer shown in FIG. 4. 10...Waveform shaping circuit, 11...1 shot circuit, 12...Addition/integration circuit, 13...1 shot circuit, fi ...Measurement frequency, P1 , P2 ...Pulse signal, V1 , V 2 ...Output voltage.
Claims (1)
を有する第１パルス信号を出力する第１ワンシヨ
ツト回路と、前記第１パルス信号のパルス幅に対
して十分に長いパルス幅を有する第２パルス信号
を出力する第２ワンシヨツト回路と、一端に第１
基準電圧が印加され他端に第１抵抗が接続されて
前記第１パルス信号により開閉される第１スイツ
チ手段と、一端に前記第１基準電圧とは逆極性で
前記測定周波数の測定範囲の下限に対応する第２
基準電圧が印加され他端に第２抵抗が接続されて
前記第２パルス信号により開閉される第２スイツ
チ手段と、前記第１抵抗と前記第２抵抗を介して
それぞれ接続されこれ等の抵抗に流れる電流を加
算・積分して前記測定周波数に対応する出力信号
を出力する加算・積分回路とを有し、前記測定周
波数がゼロのときに前記加算・積分回路の出力信
号をゼロとするようにしたことを特徴とする周波
数トランスデユーサ。 a first one-shot circuit that outputs a first pulse signal having a predetermined pulse width each time a measurement frequency is input; and a second pulse signal that has a sufficiently long pulse width with respect to the pulse width of the first pulse signal. A second one-shot circuit to output and a first one-shot circuit at one end.
a first switch means to which a reference voltage is applied, a first resistor connected to the other end and opened/closed by the first pulse signal; and a lower limit of the measurement range of the measurement frequency having a polarity opposite to the first reference voltage at one end; the second corresponding to
a second switch means to which a reference voltage is applied and a second resistor is connected to the other end thereof and is opened and closed by the second pulse signal; an addition/integration circuit that adds and integrates flowing current and outputs an output signal corresponding to the measurement frequency, and the output signal of the addition/integration circuit is set to zero when the measurement frequency is zero. A frequency transducer characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13554389U JPH0733175Y2 (en) | 1989-11-22 | 1989-11-22 | Frequency transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13554389U JPH0733175Y2 (en) | 1989-11-22 | 1989-11-22 | Frequency transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374366U true JPH0374366U (en) | 1991-07-25 |
| JPH0733175Y2 JPH0733175Y2 (en) | 1995-07-31 |
Family
ID=31682807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13554389U Expired - Fee Related JPH0733175Y2 (en) | 1989-11-22 | 1989-11-22 | Frequency transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733175Y2 (en) |
-
1989
- 1989-11-22 JP JP13554389U patent/JPH0733175Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0733175Y2 (en) | 1995-07-31 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |