JPH02133673U - - Google Patents
Info
- Publication number
- JPH02133673U JPH02133673U JP4357589U JP4357589U JPH02133673U JP H02133673 U JPH02133673 U JP H02133673U JP 4357589 U JP4357589 U JP 4357589U JP 4357589 U JP4357589 U JP 4357589U JP H02133673 U JPH02133673 U JP H02133673U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- capacitor
- resistor
- shaping 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案に係る周波数計の一実施例の接
続図、第２図は第１図の動作を説明する為の図、
第３図は従来のこの種の周波数計の一例の接続図
である。
２０……振幅整形回路、３０……微分用コンデ
ンサ、５０……抵抗直列回路、６０……演算増幅
器、７０……指示計。
Fig. 1 is a connection diagram of an embodiment of the frequency meter according to the present invention, Fig. 2 is a diagram for explaining the operation of Fig. 1,
FIG. 3 is a connection diagram of an example of a conventional frequency meter of this type. 20... Amplitude shaping circuit, 30... Differential capacitor, 50... Resistor series circuit, 60... Operational amplifier, 70... Indicator.
Claims (1)
回路、この振幅整形回路の出力を微分する微分コ
ンデンサ、このコンデンサにより得られた微分電
流が供給される第１と第２の抵抗より成る直列抵
抗回路、前記振幅整形回路の出力により充電され
るバイアス用コンデンサ、このバイアス用コンデ
ンサの充電電荷を前記微分電流とは逆方向に前記
直列抵抗回路における第２の抵抗を介して放電さ
せる手段、前記振幅整形回路の出力を整流して電
源とし前記直列抵抗回路に生じる電圧を増幅する
増幅器、及びこの増幅器の出力を計測する指示計
よりなる微分周波数計。 An amplitude shaping circuit that shapes an input signal into a waveform of constant amplitude, a differential capacitor that differentiates the output of this amplitude shaping circuit, and a series resistance circuit consisting of a first and second resistor to which the differential current obtained by this capacitor is supplied. , a bias capacitor charged by the output of the amplitude shaping circuit, means for discharging the charge of the bias capacitor in a direction opposite to the differential current through a second resistor in the series resistor circuit, and the amplitude shaping circuit. A differential frequency meter comprising an amplifier that rectifies the output of the circuit and uses it as a power source to amplify the voltage generated in the series resistance circuit, and an indicator that measures the output of this amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357589U JPH0738863Y2 (en) | 1989-04-13 | 1989-04-13 | Differential frequency meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357589U JPH0738863Y2 (en) | 1989-04-13 | 1989-04-13 | Differential frequency meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02133673U true JPH02133673U (en) | 1990-11-06 |
| JPH0738863Y2 JPH0738863Y2 (en) | 1995-09-06 |
Family
ID=31556100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4357589U Expired - Lifetime JPH0738863Y2 (en) | 1989-04-13 | 1989-04-13 | Differential frequency meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738863Y2 (en) |
-
1989
- 1989-04-13 JP JP4357589U patent/JPH0738863Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738863Y2 (en) | 1995-09-06 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |