CN219039588U - Clock circuit with pulse time service function - Google Patents
Clock circuit with pulse time service function Download PDFInfo
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- CN219039588U CN219039588U CN202223381295.0U CN202223381295U CN219039588U CN 219039588 U CN219039588 U CN 219039588U CN 202223381295 U CN202223381295 U CN 202223381295U CN 219039588 U CN219039588 U CN 219039588U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to the technical field of clocks, in particular to a clock circuit with a pulse time service function; the pulse generator comprises a chip, a crystal oscillator is connected between an SCO1 pin and an SCO2 pin of the chip, two ends of the crystal oscillator are respectively connected with a first capacitor and a second capacitor, the second ends of the first capacitor and the second capacitor are commonly connected with a circuit power supply, the circuit power supply is connected with a VCC pin of the chip and an e pole of a triode, a b pole of the triode is connected with a first resistor, the other end of the first resistor is connected with an M0 pin of the chip, a c pole of the triode is respectively connected with a second resistor and an input end of a 30 frequency divider, a relatively low-frequency pulse signal is sent out through the pulse generator, and then the clock can be clocked or calibrated through a simple 30 frequency divider, so that a large number of intermediate links are reduced, and error accumulation is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of clocks, in particular to a clock circuit with a pulse time service function.
Background
As shown in fig. 1, in a civil common electronic clock, a 555 chip or the like is generally used to generate a high-frequency pulse (1000 hz), and then the high-frequency pulse is gradually decomposed into a low-frequency pulse (1 hz) as a timing pulse or a time service pulse by a plurality of frequency dividers. Because the high-frequency pulse sent by the 555 chip once is subjected to multiple frequency division, the precision is poor, and errors can be accumulated after long-time use, namely, the clock is not accurate.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a clock circuit with a pulse time service function.
The technical scheme of the utility model is as follows:
the clock circuit with the pulse time service function comprises a pulse generator and a clock circuit, wherein the pulse generator comprises a chip, a crystal oscillator is connected between an SCO1 pin and an SCO2 pin of the chip, two ends of the crystal oscillator are respectively connected with a first capacitor and a second capacitor, the second ends of the first capacitor and the second capacitor are commonly connected with a circuit power supply, the circuit power supply is connected with a VCC pin of the chip and an e pole of a triode, a b pole of the triode is connected with a first resistor, the other end of the first resistor is connected with an M0 pin of the chip, a c pole of the triode is respectively connected with a second resistor and an input end of a 30 frequency divider, the GND pin of the chip and the other end of the second resistor are grounded, and an output end of the 30 frequency divider is connected with a time correction pulse input end or a time service pulse input end of the clock circuit.
Further, the chip is 2212F chip, and has accurate low-frequency signal output.
Furthermore, the triode is a 9012 triode, a common triode, low price and low production cost.
The beneficial effects of the utility model are as follows: the pulse generator sends out a relatively low-frequency pulse signal, and then the clock can be clocked or timed through a simple 30 frequency divider, so that a large number of intermediate links are reduced, and the error accumulation is effectively reduced.
Drawings
FIG. 1 is a prior art clock circuit;
FIG. 2 is a schematic diagram of the structure of the present utility model;
fig. 3 is a circuit diagram of a prior art divide by 30.
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 2, the clock circuit with pulse time service function includes a pulse generator and a clock circuit, the pulse generator includes a chip, a crystal oscillator XTAL is connected between a SCO1 pin and a SCO2 pin of the chip, two ends of the crystal oscillator XTAL are respectively connected with a first capacitor C1 and a second capacitor C2, the second ends of the first capacitor C1 and the second capacitor C2 are commonly connected with a circuit power VCC, the circuit power VCC is connected with a VCC pin of the chip and an e pole of a triode Q1, a b pole of the triode Q1 is connected with a first resistor R1, the other end of the first resistor R1 is connected with an M0 pin of the chip, a C pole of the triode Q1 is respectively connected with an input end of a second resistor R2 and a 30 frequency divider, the GND pin of the chip and the other end of the second resistor R2 are grounded, and an output end of the 30 frequency divider is connected with a time correction pulse input end or a time service pulse input end of the clock circuit.
The chip is 2212F chip.
The triode is a 9012 triode.
The working principle of the utility model is as follows:
the proper crystal oscillator (for example, 4.194304M active crystal oscillator) is selected to be matched with the 5512F chip, 30 signals (30 Hz) are output every second, and then signals (namely, 1 Hz signals required by time service) are transmitted outwards every thirty times through a 30 frequency divider (for example, shown in fig. 3).
The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the utility model, and various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (3)
1. The clock circuit with the pulse time service function comprises a pulse generator and a clock circuit, and is characterized in that the pulse generator comprises a chip, a crystal oscillator is connected between an SCO1 pin and an SCO2 pin of the chip, two ends of the crystal oscillator are respectively connected with a first capacitor and a second capacitor, the second ends of the first capacitor and the second capacitor are commonly connected with a circuit power supply, the circuit power supply is connected with a VCC pin of the chip and an e pole of a triode, a b pole of the triode is connected with a first resistor, the other end of the first resistor is connected with an M0 pin of the chip, a c pole of the triode is respectively connected with a second resistor and an input end of a 30 frequency divider, the GND pin of the chip and the other end of the second resistor are grounded, and an output end of the 30 frequency divider is connected with a time correction pulse input end or a time service pulse input end of the clock circuit.
2. The clock circuit with pulse time service function according to claim 1, wherein: the chip is 2212F chip.
3. The clock circuit with pulse time service function according to claim 2, wherein: the triode is a 9012 triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223381295.0U CN219039588U (en) | 2022-12-16 | 2022-12-16 | Clock circuit with pulse time service function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223381295.0U CN219039588U (en) | 2022-12-16 | 2022-12-16 | Clock circuit with pulse time service function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219039588U true CN219039588U (en) | 2023-05-16 |
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ID=86279754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223381295.0U Active CN219039588U (en) | 2022-12-16 | 2022-12-16 | Clock circuit with pulse time service function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219039588U (en) |
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2022
- 2022-12-16 CN CN202223381295.0U patent/CN219039588U/en active Active
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