JPS572130A - Starting circuit for oscillating circuit - Google Patents
Starting circuit for oscillating circuitInfo
- Publication number
- JPS572130A JPS572130A JP7541880A JP7541880A JPS572130A JP S572130 A JPS572130 A JP S572130A JP 7541880 A JP7541880 A JP 7541880A JP 7541880 A JP7541880 A JP 7541880A JP S572130 A JPS572130 A JP S572130A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- circuit
- oscillating circuit
- buffer
- 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
- 230000010355 oscillation Effects 0.000 abstract 6
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L3/00—Starting of generators
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To ensure easy starting for an oscillating circuit which is hard to start at a low temperature and with the like factors, by having a continuous start with a frequency near the oscillation frequency of an oscillating circuit to be started and stopping the application of the start signal when the oscillation becomes stable. CONSTITUTION:In case an oscillating circuit III has no start immediately after application of a power source, the Q' terminal output C of a triggerable monostable vibrator 20 is set at a high level. Thus a tristate buffer IVc functions as a mere buffer, and the output signal (b) of an oscillating circuit IVa is applied to the circuit III to ensure a continuous start. As a result, the circuit III starts oscillations to have a sufficient amplitude and a certain level of frequency fo at the final stage of oscillation. Then the Q' terminal output (c) of the vibrator 20 is set at a low level at and after the time point when th e oscillation becomes stable, and accordingly the buffer IVc closes the gate with an output terminal Y set at a high impedance. As a result, no signal (b) is applied to the circuit III but continues a stable oscillation by itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7541880A JPS572130A (en) | 1980-06-06 | 1980-06-06 | Starting circuit for oscillating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7541880A JPS572130A (en) | 1980-06-06 | 1980-06-06 | Starting circuit for oscillating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS572130A true JPS572130A (en) | 1982-01-07 |
Family
ID=13575609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7541880A Pending JPS572130A (en) | 1980-06-06 | 1980-06-06 | Starting circuit for oscillating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS572130A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329988A2 (en) * | 1988-02-25 | 1989-08-30 | Heinz Prof. Dr.-Ing. Lindenmeier | High frequency power generator |
| JPH01309513A (en) * | 1988-06-08 | 1989-12-13 | Matsushita Electric Ind Co Ltd | Signal generator |
| JPH07326962A (en) * | 1995-05-15 | 1995-12-12 | Seiko Epson Corp | Electronic equipment |
| WO2000041302A1 (en) * | 1998-12-31 | 2000-07-13 | Ericsson, Inc. | Dual clock signal generating circuit |
-
1980
- 1980-06-06 JP JP7541880A patent/JPS572130A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329988A2 (en) * | 1988-02-25 | 1989-08-30 | Heinz Prof. Dr.-Ing. Lindenmeier | High frequency power generator |
| JPH01309513A (en) * | 1988-06-08 | 1989-12-13 | Matsushita Electric Ind Co Ltd | Signal generator |
| JPH07326962A (en) * | 1995-05-15 | 1995-12-12 | Seiko Epson Corp | Electronic equipment |
| WO2000041302A1 (en) * | 1998-12-31 | 2000-07-13 | Ericsson, Inc. | Dual clock signal generating circuit |
| US6138246A (en) * | 1998-12-31 | 2000-10-24 | Ericsson Inc. | Dual clock signal generating circuit |
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