JPS54130966A - Oscillatory frequency detecting circuit - Google Patents
Oscillatory frequency detecting circuitInfo
- Publication number
- JPS54130966A JPS54130966A JP3828178A JP3828178A JPS54130966A JP S54130966 A JPS54130966 A JP S54130966A JP 3828178 A JP3828178 A JP 3828178A JP 3828178 A JP3828178 A JP 3828178A JP S54130966 A JPS54130966 A JP S54130966A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- oscillatory
- voltage
- oscillatory frequency
- frequency
- 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
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
PURPOSE: To make it possible to detect and measure the oscillatory frequency in high accuracy without any addition to an aocillatory circuit by varying a main voltage or consumption current.
CONSTITUTION: A current-voltage converting circuit or voltage variation detecting circuit 8 interposed between an oscillatory circuit 6 and a power source 7 detects the variation in the consumption curent of the circuit 6 or the voltage of the power source. This current or voltage is varied in synchronism with the oscillatory frequency while containing the oscillatory frequency as ripple. Since the output of the circuit 8 contains the oscillatory freuency component of the circuit 6, its frequency can be measured as the input to a counter 11 by means of a BPF 9 and a waveform shaping circuit 10. Thanks to the detection of the oscillatory frequency, the oscillatory frequency of the circuit 6 can be stably detected without any change in the load upon the circuit 6 and without any provision of the detecting output.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3828178A JPS54130966A (en) | 1978-03-31 | 1978-03-31 | Oscillatory frequency detecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3828178A JPS54130966A (en) | 1978-03-31 | 1978-03-31 | Oscillatory frequency detecting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54130966A true JPS54130966A (en) | 1979-10-11 |
Family
ID=12520925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3828178A Pending JPS54130966A (en) | 1978-03-31 | 1978-03-31 | Oscillatory frequency detecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54130966A (en) |
-
1978
- 1978-03-31 JP JP3828178A patent/JPS54130966A/en active Pending
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