JPS54130966A - Oscillatory frequency detecting circuit - Google Patents

Oscillatory frequency detecting circuit

Info

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
Application number
JP3828178A
Other languages
Japanese (ja)
Inventor
Masaharu Fujino
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP3828178A priority Critical patent/JPS54130966A/en
Publication of JPS54130966A publication Critical patent/JPS54130966A/en
Pending legal-status Critical Current

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
JP3828178A 1978-03-31 1978-03-31 Oscillatory frequency detecting circuit Pending JPS54130966A (en)

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)

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