CN215073072U - Delay control circuit based on operational amplifier detection input voltage - Google Patents
Delay control circuit based on operational amplifier detection input voltage Download PDFInfo
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- CN215073072U CN215073072U CN202121335408.6U CN202121335408U CN215073072U CN 215073072 U CN215073072 U CN 215073072U CN 202121335408 U CN202121335408 U CN 202121335408U CN 215073072 U CN215073072 U CN 215073072U
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Abstract
The utility model discloses a time delay control circuit based on input voltage is put to fortune, including supply circuit, control circuit and relay, supply circuit is connected with external switch power supply electricity, and control circuit is connected with the supply circuit electricity, and the relay is connected with the control circuit electricity, and the relay is connected with the lamps and lanterns electricity. The power supply circuit is arranged, so that the output voltage of the external switch power supply can be converted into the voltage required by the control circuit and the relay; through being equipped with control circuit, through monitoring input voltage and reference voltage relatively, when input voltage is greater than the setting value, the relay switches on, and switching power supply supplies power for lamps and lanterns to guarantee that the supply voltage of lamps and lanterns does not begin from 0V, can avoid lamps and lanterns to start at switching power supply at the in-process that starts, guarantee switching power supply stability, make the brightening effect of lamps and lanterns stable no scintillation, do benefit to the life who improves lamps and lanterns.
Description
Technical Field
The utility model belongs to lamps and lanterns input voltage control field especially relates to a time delay control circuit based on detection input voltage is put to fortune.
Background
At present, a DC-DC conversion circuit is arranged in many lamps, and DC48 of the power supply switching power supply is converted into a voltage suitable for the lamps and the control chip. Because the process that the switching power supply starts to charge the rear-stage filter capacitor is a climbing process, the voltage rises from 0 to 48V; if the lamp is started in the starting process of the switching power supply, the switching power supply is required to provide larger current to meet the voltage shortage, so that the switching power supply triggers over-current protection, and the lamp flickers to influence use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can solve at least one among the above-mentioned problem put a time delay control circuit based on detection input voltage, including supply circuit, control circuit and relay, supply circuit is connected with external switching power supply electricity, and control circuit is connected with the supply circuit electricity, and the relay is connected with the control circuit electricity, and the relay is connected with the lamps and lanterns electricity.
The utility model has the advantages that: the power supply circuit is arranged, so that the output voltage of the external switch power supply can be converted into the voltage required by the control circuit and the relay; through being equipped with control circuit, through monitoring input voltage and reference voltage relatively, when input voltage is greater than the setting value, the relay switches on, and switching power supply supplies power for lamps and lanterns to guarantee that the supply voltage of lamps and lanterns does not begin from 0V, can avoid lamps and lanterns to start at switching power supply at the in-process that starts, guarantee switching power supply stability, make the brightening effect of lamps and lanterns stable no scintillation, do benefit to the life who improves lamps and lanterns.
In some embodiments, the control circuit includes a control chip and a voltage dividing circuit, the voltage dividing circuit includes a second resistor, a fourth resistor, a seventh resistor and an eighth resistor, the second resistor is connected in series with the fourth resistor, the seventh resistor and the eighth resistor are connected in parallel to the second pin and the fourth pin of the control chip, and the fourth resistor is electrically connected with the seventh resistor and the eighth resistor. Therefore, different reference voltage values can be met by adjusting the resistance values of the corresponding resistors through the arrangement of the voltage division circuit.
In some embodiments, the control chip is model TSM103 WAIDT. Therefore, the use requirement of the circuit can be met.
In some embodiments, the 24V power supply chip of the power supply circuit is of TD1660 model by tide. Therefore, the use requirement of the circuit can be met.
In some embodiments, the control circuit further comprises a supplementary reference voltage 2.5V circuit, and one end of the supplementary reference voltage 2.5V circuit is electrically connected with the control chip. Therefore, the pull-in and the pull-off of the relay can be controlled conveniently through the comparison condition of the reference voltage value.
Drawings
Fig. 1 is a schematic diagram of the operation principle of the delay control circuit for detecting the input voltage based on the operational amplifier of the present invention;
fig. 2 is a schematic circuit diagram of a control circuit according to the present invention;
fig. 3 is a schematic circuit diagram of the power supply circuit of the present invention;
fig. 4 is a schematic circuit diagram of the circuit of the present invention for supplementing the reference voltage 2.5V.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Refer to fig. 1 to 4. The utility model provides a time delay control circuit based on input voltage is put to fortune, includes supply circuit, control circuit and relay, and supply circuit is connected with external switching power supply electricity, and control circuit is connected with the supply circuit electricity, and the relay is connected with the control circuit electricity, and the relay is connected with lamps and lanterns electricity. Wherein the electrical connection is through a wire. The delay control circuit based on the operational amplifier detection input voltage can be used for performing voltage control between any output voltage of the external switch power supply and a lamp, and the detection voltage can be adjusted at will to achieve the control effect; the lamp can be prevented from being directly started in the starting process of the switching power supply, the power supply stability of the switching power supply is ensured, and the lighting effect of the lamp is stable and does not flicker.
The control circuit comprises a control chip and a voltage division circuit, the voltage division circuit comprises a second resistor R2, a fourth resistor R4, a seventh resistor R7 and an eighth resistor R8, the second resistor is connected with the fourth resistor in series, the seventh resistor and the eighth resistor are connected to a second pin and a fourth pin of the control chip in parallel, and the fourth resistor is electrically connected with the seventh resistor and the eighth resistor.
In some embodiments, the control chip may be replaced by a general operational amplifier control circuit of a TSM103WAIDT or another different manufacturer.
In some embodiments, the 24V power supply chip of the power supply circuit is TD1660 model by tedder, and may be replaced by another power supply chip of a different manufacturer.
The relay can select a single coil or double coil form according to specific use requirements, and the relay is adopted to realize the on-off of high power by controlling a small signal. Each chip in the whole operational amplifier detection input voltage-based delay control circuit is high in replaceability, and under the condition that the supply of the chip is not enough, the replaceability of the chip is solved.
In the actual use process, the size of the product is 75 × 69mm, and the product is small, so that the integral installation is convenient; the current of the control 20A can be realized.
The utility model discloses a time delay control circuit based on input voltage is put to fortune converts switching power supply output voltage to the voltage that control circuit and relay need through supply circuit.
The control circuit further comprises a supplementary reference voltage 2.5V circuit, and one end of the supplementary reference voltage 2.5V circuit is electrically connected with the control chip.
The utility model discloses a time delay control circuit based on detection input voltage is put to fortune is through monitoring input voltage to carry out the comparison with control chip's reference voltage, when output voltage is greater than the setting value, the relay switches on, and switching power supply supplies power for lamps and lanterns, thereby guarantees that the supply voltage of lamps and lanterns does not begin from 0V. Specifically, the resistance values of the second resistor R2, the fourth resistor R4, the seventh resistor R7 and the eighth resistor R8 of the voltage divider circuit can be adjusted based on the reference voltage 2.5V of the supplementary reference voltage 2.5V circuit, and when the output voltage of the switching power supply rises to a set value, the relay is closed, and then the switching power supply supplies power to the lamp.
In the practical use process, when the selected general operational amplifier does not carry 2.5V reference voltage, such as a control chip adopting the standard model LM258DT and a control chip of Texas instruments with the model LM2904DR, the general operational amplifier chip needs to be externally connected with a supplementary reference voltage 2.5V circuit, and then the 2.5V is directly connected to the 3Pin Pin of the corresponding chip.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.
Claims (5)
1. The utility model provides a time delay control circuit based on input voltage is put to fortune, its characterized in that, includes supply circuit, control circuit and relay, supply circuit is connected with external switching power supply electricity, control circuit is connected with the supply circuit electricity, the relay is connected with the control circuit electricity, the relay is connected with the lamps and lanterns electricity.
2. The operational amplifier-based delay control circuit for detecting an input voltage according to claim 1, wherein the control circuit comprises a control chip and a voltage divider circuit, the voltage divider circuit comprises a second resistor (R2), a fourth resistor (R4), a seventh resistor (R7) and an eighth resistor (R8), the second resistor is connected in series with the fourth resistor, the seventh resistor and the eighth resistor are connected in parallel with the second pin and the fourth pin of the control chip, and the fourth resistor is electrically connected with the seventh resistor and the eighth resistor.
3. The operational amplifier based delay control circuit for detecting an input voltage according to claim 2, wherein the model of the control chip is TSM103 WAIDT.
4. The operational amplifier based delay control circuit for detecting the input voltage according to any one of claims 1 to 3, wherein a 24V power supply chip of the power supply circuit is a TD1660 model of Taide.
5. The operational amplifier based delay control circuit for detecting the input voltage according to claim 3, wherein the control circuit further comprises a supplementary reference voltage 2.5V circuit, and one end of the supplementary reference voltage 2.5V circuit is electrically connected with the control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121335408.6U CN215073072U (en) | 2021-06-16 | 2021-06-16 | Delay control circuit based on operational amplifier detection input voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121335408.6U CN215073072U (en) | 2021-06-16 | 2021-06-16 | Delay control circuit based on operational amplifier detection input voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215073072U true CN215073072U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121335408.6U Active CN215073072U (en) | 2021-06-16 | 2021-06-16 | Delay control circuit based on operational amplifier detection input voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215073072U (en) |
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2021
- 2021-06-16 CN CN202121335408.6U patent/CN215073072U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: One of the factories at No. 39 Hengchang Road, Hecheng Street, Gaoming District, Foshan City, Guangdong Province, 528599 Patentee after: Foshan Hanrun Zhiguang Technology Co.,Ltd. Address before: Shop 5, No.18, Changkang street, Hecheng street, Gaoming District, Foshan City, Guangdong Province, 528599 Patentee before: Foshan Hanrun Zhiguang Technology Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |