JPS56108969A - Frequency-voltage converter - Google Patents
Frequency-voltage converterInfo
- Publication number
- JPS56108969A JPS56108969A JP1003980A JP1003980A JPS56108969A JP S56108969 A JPS56108969 A JP S56108969A JP 1003980 A JP1003980 A JP 1003980A JP 1003980 A JP1003980 A JP 1003980A JP S56108969 A JPS56108969 A JP S56108969A
- Authority
- JP
- Japan
- Prior art keywords
- fluctuations
- circuit
- time constant
- signal
- temp
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To compensate the fluctuations in threshold level owing to temp. fluctuations by providing two time constant circuits which are driven in mutually opposite polarity directions every time when each pulse of an input signal is applied, and taking the coincided output of both time constant circuits. CONSTITUTION:The pulse signal P of about 50% duty cycle is inputted as a signal to be converted. The signal P is applied via an inverter 12 to time constant circuits 13, 14, and the outputs of both time constant circuits 13, 14 are applied to an exclusive-NOR circuit 15. Hence, the circuit 15 outputs the pulses of a fixed width determined by the time constants of the circuits 13, 14 and the threshold level of the exclusive-NOR circuit at the rise and fall of the pulse signal P. Even if the threshold level fluctuates owing to temp. fluctuations, the fluctuations in the output pulse width negate each other and therefore the output integrating these pulses in an integrating circuit 16 is compensated of the temp. fluctuations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1003980A JPS56108969A (en) | 1980-02-01 | 1980-02-01 | Frequency-voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1003980A JPS56108969A (en) | 1980-02-01 | 1980-02-01 | Frequency-voltage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56108969A true JPS56108969A (en) | 1981-08-28 |
Family
ID=11739245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1003980A Pending JPS56108969A (en) | 1980-02-01 | 1980-02-01 | Frequency-voltage converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56108969A (en) |
-
1980
- 1980-02-01 JP JP1003980A patent/JPS56108969A/en active Pending
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