JPS56157102A - Adjusting system for oscillation frequency - Google Patents

Adjusting system for oscillation frequency

Info

Publication number
JPS56157102A
JPS56157102A JP6152680A JP6152680A JPS56157102A JP S56157102 A JPS56157102 A JP S56157102A JP 6152680 A JP6152680 A JP 6152680A JP 6152680 A JP6152680 A JP 6152680A JP S56157102 A JPS56157102 A JP S56157102A
Authority
JP
Japan
Prior art keywords
oscillation frequency
oscillator
circuit
constitution
cutting
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
JP6152680A
Other languages
Japanese (ja)
Inventor
Kunihira Miyamoto
Toru Inosaki
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP6152680A priority Critical patent/JPS56157102A/en
Publication of JPS56157102A publication Critical patent/JPS56157102A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0307—Stabilisation of output, e.g. using crystal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To obtain a desired oscillation frequency based on a measurement, by cutting off a capacitor connected to a circuit base board previously when an adjustment is given to a piezoelectric oscillator which is used for production of a display clock of CRT and the like. CONSTITUTION:A quartz oscillator 1, inverting circuits 2 and 3, resistances 4 and 5 plus capacitors (C) 10-13 are attached to a circuit base board to form an oscillating circuit. Then the oscillation signal is delivered from an output terminal 9. In a circuit of such constitution, the load capacity of an oscillator 1 is defined as C0 and C1 with the oscillation frequencies f0 and f1 respectively. The capacity of C13 is set so that the load capacity of the oscillator 1 that varies by cutting off C13 only becomes equal to the difference of C1 and C0. Then the capacities of C12 and C11 are set at the values of a double and a triple as much as the above-mentioned difference. Then C10-13 with such set capacities are all connected together, and C13 is cut off in case when the measured oscillation frequency is between f1 and f2. When the oscillation frequency is between f2 and f3 as well as between f3 and f4, C12 and C11 are cut off respectively to obtain a desired oscillation frequency.
JP6152680A 1980-05-08 1980-05-08 Adjusting system for oscillation frequency Pending JPS56157102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6152680A JPS56157102A (en) 1980-05-08 1980-05-08 Adjusting system for oscillation frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6152680A JPS56157102A (en) 1980-05-08 1980-05-08 Adjusting system for oscillation frequency

Publications (1)

Publication Number Publication Date
JPS56157102A true JPS56157102A (en) 1981-12-04

Family

ID=13173625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6152680A Pending JPS56157102A (en) 1980-05-08 1980-05-08 Adjusting system for oscillation frequency

Country Status (1)

Country Link
JP (1) JPS56157102A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5156677A (en) * 1974-11-14 1976-05-18 Seiko Instr & Electronics
JPS5245857A (en) * 1975-10-09 1977-04-11 Seiko Epson Corp Quartz crystal watch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5156677A (en) * 1974-11-14 1976-05-18 Seiko Instr & Electronics
JPS5245857A (en) * 1975-10-09 1977-04-11 Seiko Epson Corp Quartz crystal watch

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