CN216751696U - Low-voltage power supply unstable multivibrator - Google Patents
Low-voltage power supply unstable multivibrator Download PDFInfo
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- CN216751696U CN216751696U CN202220280790.3U CN202220280790U CN216751696U CN 216751696 U CN216751696 U CN 216751696U CN 202220280790 U CN202220280790 U CN 202220280790U CN 216751696 U CN216751696 U CN 216751696U
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Abstract
The utility model discloses an unsteady multivibrator with low-voltage power supply, which relates to the technical field of multivibrator power supplies and comprises the following components: the device comprises a power supply module, a control module, a voltage regulation module, a voltage output module, an astable multivibrator module and a sampling protection module; the power supply module provides direct current, the control module controls the multivibrator to work, the voltage adjusting module boosts the voltage, the voltage output module adjusts the voltage value in a grading mode, the unsteady-state multivibrator module generates square wave signals, and the sampling protection module detects the square wave signals and compares overvoltage thresholds. The low-voltage power supply astable multivibrator adopts the voltage regulating module to boost the input low voltage and output the voltage in a grading way, different astable multivibrators can be controlled to work through different voltage values, the low-voltage control of the astable multivibrator is realized, and the sampling protection is carried out on the astable multivibrator module.
Description
Technical Field
The utility model relates to the technical field of multivibrator power supplies, in particular to an astable multivibrator with low-voltage power supply.
Background
Multivibrator: the oscillator is commonly used as a square wave generator, and the multivibrator is a self-excited oscillator capable of generating rectangular waves by alternately switching on and off two electronic devices through resistance-capacitance coupling, wherein an astable multivibrator does not have a stable state due to the fact that saturation and cut-off states between power tubes are alternately performed, and the astable multivibrator cannot normally work due to limited input power energy or unstable voltage, so that the astable multivibrator powered by low voltage is necessary, and corresponding detection and protection are also necessary for the astable multivibrator, and the astable multivibrator can be guaranteed to still normally work under the condition of low voltage power supply.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a low-voltage power supply astable multivibrator, which is used for solving the problems in the background art.
In accordance with an embodiment of the present invention, there is provided a low-voltage powered astable multivibrator, comprising: the device comprises a power supply module, a control module, a voltage regulation module, a voltage output module, an astable multivibrator module and a sampling protection module;
the power supply module is connected with the voltage regulating module and the control module and is used for providing required low-voltage direct current;
the control module is connected with the voltage regulating module and is used for controlling the work of the voltage regulating module through a single key;
the voltage regulating module is connected with the voltage output module and is used for performing voltage conversion on the input low-voltage direct current;
the voltage output module is connected with the voltage regulating module and is used for regulating the voltage value output by the voltage regulating module in a grading way;
the astable multivibrator module is connected with the voltage output module and is used for receiving the voltage value output by the voltage output module and generating a square wave signal;
the sampling protection module is connected with the astable multivibrator module, is used for detecting and rectifying the square wave signals output by the astable multivibrator module, is connected with the power supply module, and is used for comparing the rectified square wave signals with an overvoltage threshold value and controlling the work of the power supply module.
Compared with the prior art, the utility model has the beneficial effects that: the astable multivibrator with low voltage power supply adopts the voltage regulating module to boost the input low voltage and output the voltage in a grading way, different astable multivibrators can be controlled to work through different voltage values, the astable multivibrator is controlled by the low voltage, the structure of the astable multivibrator does not need to be changed excessively, the control mode is simple and easy to understand, the astable multivibrator module is subjected to sampling protection, the phenomenon of overvoltage of the output square wave signal is avoided, and the safety of the astable multivibrator is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of an astable multivibrator powered by low voltage according to an embodiment of the present invention.
Fig. 2 is a connection circuit diagram of the power supply module, the control module, the voltage regulation module and the voltage output module according to the embodiment of the utility model.
Fig. 3 is a circuit diagram of the connection between the astable multivibrator module and the sampling protection module according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the utility model provides a low-voltage-powered astable multivibrator, which includes: the device comprises a power supply module 1, a control module 2, a voltage regulating module 3, a voltage output module 4, an astable multivibrator module 5 and a sampling protection module 6;
specifically, the power supply module 1 is connected with the voltage regulation module 3 and the control module 2, and is used for providing required low-voltage direct current;
the control module 2 is connected with the voltage regulating module 3 and is used for controlling the voltage regulating module 3 to work through a single key;
the voltage regulating module 3 is connected with the voltage output module 4 and is used for performing voltage conversion on the input low-voltage direct current;
the voltage output module 4 is connected with the voltage regulating module 3 and is used for regulating the voltage value output by the voltage regulating module 3 in a grading way;
the astable multivibrator module 5 is connected with the voltage output module 4 and is used for receiving the voltage value output by the voltage output module 4 and generating a square wave signal;
and the sampling protection module 6 is connected with the astable multivibrator module 5, is used for detecting and rectifying the square wave signals output by the astable multivibrator module 5, is connected with the power supply module 1, and is used for comparing the rectified square wave signals with an overvoltage threshold value and controlling the work of the power supply module 1.
In this embodiment, referring to fig. 2, the power supply module 1 includes a DC power supply DC, a first contact switch K1-1, a first voltage regulator VD1, and a first capacitor C1;
specifically, one end of the direct current power supply DC is connected to the cathode of the first voltage regulator VD1 and the first end of the first capacitor C1 through the first contact switch K1-1, and the anode of the first voltage regulator VD1, the second end of the first capacitor C1 and the other end of the power supply are all grounded.
Further, the control module 2 includes a first resistor R1, a first control switch S1, a first switch tube N1, and a first power source VCC 1;
specifically, one end of the first resistor R1 is connected to the first end of the first capacitor C1, the other end of the first resistor R1 is connected to the base of the first switch tube N1 through the first control switch S1, the collector of the first switch tube N1 is connected to the first power source VCC1, and the emitter of the first switch tube N1 is connected to the voltage regulation module 3.
In a specific embodiment, the first contact switch K1-1 is a normally closed switch; the first control switch S1 is a first switch N1, which increases the high level and controls the first switch N1 to turn off, and the first switch N1 may be an NPN transistor.
Further, referring to fig. 2, the voltage adjustment module 3 includes a second resistor R2, a second capacitor C2, a first diode D1, a first inductor L1, a regulator U1, a third capacitor C3, a third resistor R3, a fourth capacitor C4, a fourth resistor R4, a fifth resistor R5, a sixth capacitor C6, a fifth capacitor C5, a seventh resistor R7, and a sixth resistor R6;
specifically, one end of the first inductor L1 is connected to one end of the first capacitor C1, the other end of the first inductor L1 is connected to one end of the second resistor R2, the anode of the first diode D1, the first end and the second end of the regulator U1, the other end of the second resistor R2 is connected to one end of the third capacitor C3 and the ground end through the second capacitor C2, the other end of the third capacitor C3 is connected to the third end of the regulator U1, the fourth end of the regulator U1 is connected to the emitter of the first switch tube N1, the ninth end of the regulator U1 is grounded, the eighth end of the regulator U1 is connected to one end of the fourth capacitor C4 and to one end of the first switch tube N1 and one end of the seventh resistor R7 through the third resistor R3, the other end of the fourth capacitor C4 is connected to one end of the fourth resistor R4, one end of the sixth capacitor C8, one end of the fifth capacitor C5, and the other end of the first resistor U685 4, the other end of the sixth capacitor C6 is connected to the other end of the fifth capacitor C5 and the sixth end of the regulator U1 through a fifth resistor R5, and the fifth end of the regulator U1 is connected to the other end of the seventh resistor R7 and grounded through the sixth resistor R6.
In a specific embodiment, the regulator U1 can be implemented by using an FP6296 chip; the first diode D1 can be an SVM1045V2 voltage regulator tube; the seventh resistor R7 and the sixth resistor R6 form a resistor divider circuit to provide a feedback voltage signal for the regulator U1.
Further, referring to fig. 2, the voltage output module 4 includes a seventh capacitor C7, a nineteenth resistor R19, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10;
specifically, a first end of the seventh capacitor C7 is connected to the cathode of the first diode D1 and connected to the eighth resistor R8, the ninth resistor R9 and the tenth resistor R10 through the nineteenth resistor R19, and a second end of the seventh capacitor C7 is grounded.
In a specific embodiment, the voltage values outputted by the voltage output module 4 in stages are respectively determined by the resistances of the eighth resistor R8, the ninth resistor R9, and the tenth resistor R10, which will not be described in detail.
In the present embodiment, referring to fig. 3, the astable multivibrator module 5 includes an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, an eighth capacitor C8, a ninth capacitor C9, a second switch tube N2, and a third switch tube N3;
specifically, one end of the eleventh resistor R11 is connected to the first end of the seventh capacitor C7, one end of the twelfth resistor R12, one end of the thirteenth resistor R13 and one end of the fourteenth resistor R14, the other end of the eleventh resistor R11 is connected to the collector of the second switch tube N2 and to the other end of the twelfth resistor R12 and the base of the third switch tube N3 through the eighth capacitor C8, the other end of the fourteenth resistor R14 is connected to the collector of the third switch tube N3 and to the other end of the thirteenth resistor R13 and the base of the second switch tube N2 through the ninth capacitor C9, and the emitter of the second switch tube N2 and the emitter of the third switch tube N3 are all grounded.
In a specific embodiment, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, the eighth capacitor C8, the ninth capacitor C9, the second switching tube N2, and the third switching tube N3 form an astable multivibrator, it should be noted that the astable multivibrator formed by the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, the eighth capacitor C8, the ninth capacitor C9, the second switching tube N2, and the third switching tube N3 is only one of the astable multivibrator circuit types, and details are not described in detail.
Further, referring to fig. 3, the sampling protection module 6 includes a rectifier G1, a fifteenth resistor R15, a sixteenth resistor R16, a tenth capacitor C10, a seventeenth resistor R17, an eighteenth resistor R18, a first comparator a1, a fourth switch tube N4, a second power source VCC2, a relay K1, and a second contact switch K1-2;
specifically, the first end of the rectifier G1 is connected to the collector of the third switching tube N3, the second end and the third end of the rectifier G1 are both grounded, the fourth end of the rectifier G1 is connected to one end of a sixteenth resistor R16, one end of a tenth capacitor C10 and the non-inverting end of the first comparator a1 through a fifteenth resistor R15, the inverting end of the first comparator a1 is connected to one end of an eighteenth resistor R18 and is connected to one end of a second power source VCC2 and one end of a relay K1 through a seventeenth resistor R17, the other end of the relay K1 is connected to one end of a second contact switch K1-2 and the collector of the fourth switching tube N4, the base of the fourth switching tube N4 is connected to the output end of the first comparator a1, the other end of the second contact switch K1-2, the emitter of the fourth switch tube N4, the other end of the eighteenth resistor R18, the other end of the tenth capacitor C10 and the other end of the sixteenth resistor R16 are all grounded.
In a specific embodiment, the rectifier G1 can be a full-bridge rectifier G1; the eighteenth resistor R18 and the seventeenth resistor R17 are overvoltage comparison thresholds, and the fifteenth resistor R15 and the sixteenth resistor R16 are voltage sampling resistors; the first comparison can be an Lm393 comparator; the fourth switching tube N4 may be an NPN transistor; the second contact switch K1-2 is a normally open switch, and the first contact switch K1-1 and the second contact switch K1-2 are controlled by a relay K1.
In the embodiment of the utility model, a low-voltage-powered astable multivibrator supplies low-voltage power by a direct-current power supply DC, a first voltage-stabilizing tube VD1 stabilizes voltage, a first capacitor C1 filters the voltage and inputs the voltage into a voltage regulation module 3 which is composed of a second resistor R2, a second capacitor C2, a first diode D1, a first inductor L1, a regulator U1, a third capacitor C3, a third resistor R3, a fourth capacitor C4, a fourth resistor R4, a fifth resistor R5, a sixth capacitor C6, a fifth capacitor C5, a seventh resistor R7 and a sixth resistor R6, the voltage is stably boosted by a regulator U1, the output voltage is graded by a seventh resistor R7, an eighth resistor R8, a ninth resistor R9 and a tenth resistor R10 and outputs graded voltage, and a control module 2 controls the turn-on/off of a first switch S1 to control the steady-state multivibrator output voltage of the first switch N1, and then controls the output module 465 to output voltage of the multivibrator output module, the voltage is processed by an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, an eighth capacitor C8, a ninth capacitor C9, a second switch tube N2 and a third switch tube N3, an unstable square wave signal is output by a collector terminal of the third switch tube N3, the output square wave signal is rectified by a rectifier G1, the fifteenth resistor R15 and a sixteenth resistor R16 are sampled and compared with an overvoltage threshold value by a first comparator A1, when the output voltage exceeds the overvoltage threshold value, the first comparator A1 outputs a high level, the relay K1 is powered, the second contact switch K1-2 is closed, the relay K1 is self-locked, the first contact switch K1-1 is opened, and the direct current power supply DC stops supplying power to protect a subsequent circuit.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. An astable multivibrator supplied by low voltage is characterized in that,
the low-voltage powered astable multivibrator includes: the device comprises a power supply module, a control module, a voltage regulation module, a voltage output module, an astable multivibrator module and a sampling protection module;
the power supply module is connected with the voltage regulating module and the control module and is used for providing required low-voltage direct current;
the control module is connected with the voltage regulating module and is used for controlling the work of the voltage regulating module through a single key;
the voltage regulating module is connected with the voltage output module and is used for performing voltage conversion on the input low-voltage direct current;
the voltage output module is connected with the voltage regulating module and is used for regulating the voltage value output by the voltage regulating module in a grading way;
the astable multivibrator module is connected with the voltage output module and is used for receiving the voltage value output by the voltage output module and generating a square wave signal;
the sampling protection module is connected with the astable multivibrator module, is used for detecting and rectifying the square wave signals output by the astable multivibrator module, is connected with the power supply module, and is used for comparing the rectified square wave signals with an overvoltage threshold value and controlling the work of the power supply module.
2. The astable multivibrator of claim 1, wherein the power supply module is a dc power supply, a first contact switch, a first voltage regulator, a first capacitor;
one end of the direct current power supply is connected with the cathode of the first voltage-stabilizing tube and the first end of the first capacitor through the first contact switch, and the anode of the first voltage-stabilizing tube, the second end of the first capacitor and the other end of the power supply are all grounded.
3. The astable multivibrator of claim 2, wherein the control module includes a first resistor, a first control switch, a first switch tube, a first power source;
one end of the first resistor is connected with the first end of the first capacitor, the other end of the first resistor is connected with the base of the first switch tube through the first control switch, the collector of the first switch tube is connected with the first power supply, and the emitter of the first switch tube is connected with the voltage regulation module.
4. The low-voltage-supplied astable multivibrator of claim 3, wherein the voltage regulation module includes a second resistor, a second capacitor, a first diode, a first inductor, a regulator, a third capacitor, a third resistor, a fourth capacitor, a fourth resistor, a fifth resistor, a sixth capacitor, a fifth capacitor, a seventh resistor, and a sixth resistor;
one end of the first inductor is connected with one end of the first capacitor, the other end of the first inductor is connected with one end of the second resistor, the anode of the first diode, the first end and the second end of the regulator, the other end of the second resistor is connected with one end of the third capacitor and the ground end through the second capacitor, the other end of the third capacitor is connected with the third end of the regulator, the fourth end of the regulator is connected with the emitter of the first switching tube, the ninth end of the regulator is grounded, the eighth end of the regulator is connected with one end of the fourth capacitor and is connected with the cathode of the first switching tube and one end of the seventh resistor through the third resistor, the other end of the fourth capacitor is connected with one end of the fourth resistor, one end of the sixth capacitor, one end of the fifth capacitor and the ground end, the other end of the fourth resistor is connected with the seventh end of the regulator, and the other end of the sixth capacitor is connected with the other end of the fifth capacitor and the sixth end of the regulator through the fifth resistor, and the fifth end of the regulator is connected with the other end of the seventh resistor and is grounded through the sixth resistor.
5. The low-voltage supply astable multivibrator of claim 4, wherein the voltage output module includes a seventh capacitor, a nineteenth resistor, an eighth resistor, a ninth resistor, and a tenth resistor;
and the first end of the seventh capacitor is connected with the cathode of the first diode and is connected with the eighth resistor, the ninth resistor and the tenth resistor through the nineteenth resistor, and the second end of the seventh capacitor is grounded.
6. The low-voltage supply astable multivibrator of claim 5, wherein the astable multivibrator module includes an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an eighth capacitor, a ninth capacitor, a second switch tube and a third switch tube;
one end of the eleventh resistor is connected with a first end of the seventh capacitor, one end of the twelfth resistor, one end of the thirteenth resistor and one end of the fourteenth resistor, the other end of the eleventh resistor is connected with a collector of the second switching tube and is connected with the other end of the twelfth resistor and a base of the third switching tube through the eighth capacitor, the other end of the fourteenth resistor is connected with a collector of the third switching tube and is connected with the other end of the thirteenth resistor and the base of the second switching tube through the ninth capacitor, and an emitter of the second switching tube and an emitter of the third switching tube are grounded.
7. The low-voltage supply astable multivibrator as claimed in claim 6, wherein the sampling protection module comprises a rectifier, a fifteenth resistor, a sixteenth resistor, a tenth capacitor, a seventeenth resistor, an eighteenth resistor, a first comparator, a fourth switch tube, a second power supply, a relay and a second contact switch;
the first end of the rectifier is connected with the collector of the third switch tube, the second end and the third end of the rectifier are grounded, the fourth end of the rectifier is connected with one end of a sixteenth resistor through a fifteenth resistor, one end of a tenth capacitor and the in-phase end of the first comparator, the inverting end of the first comparator is connected with one end of an eighteenth resistor and is connected with one end of a second power supply and one end of a relay through a seventeenth resistor, the other end of the relay is connected with one end of a second contact switch and the collector of the fourth switch tube, the base of the fourth switch tube is connected with the output end of the first comparator, the other end of the second contact switch, the emitter of the fourth switch tube, the other end of the eighteenth resistor, the other end of the tenth capacitor and the other end of the sixteenth resistor are grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220280790.3U CN216751696U (en) | 2022-02-11 | 2022-02-11 | Low-voltage power supply unstable multivibrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220280790.3U CN216751696U (en) | 2022-02-11 | 2022-02-11 | Low-voltage power supply unstable multivibrator |
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| CN216751696U true CN216751696U (en) | 2022-06-14 |
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| CN202220280790.3U Active CN216751696U (en) | 2022-02-11 | 2022-02-11 | Low-voltage power supply unstable multivibrator |
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Address after: B610, Zhongdi building, industry university research base, China University of Geosciences, No.8, Yuexing Third Road, South District, high tech Zone, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Saiyuan Microelectronics Co.,Ltd. Address before: 518063 b610, Zhongdi building, industry university research base, China University of Geosciences, No. 8, Yuexing Third Road, South District, high tech Zone, Nanshan District, Shenzhen, Guangdong Province Patentee before: SHENZHEN SINONE CHIP ELECTRONIC Co.,Ltd. |
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