CN215453356U

CN215453356U - Control circuit for output voltage of time delay switch power supply

Info

Publication number: CN215453356U
Application number: CN202121336548.5U
Authority: CN
Inventors: 王帅; 隆新级; 杨廉强
Original assignee: Foshan Hanrun Zhiguang Technology Co ltd
Current assignee: Foshan Hanrun Zhiguang Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-01-07
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a control circuit of output voltage of a time delay switch power supply, which comprises a power supply circuit, a time delay circuit and a relay, wherein the power supply circuit is electrically connected with an external switch power supply, the time delay circuit is electrically connected with the power supply circuit, the relay is electrically connected with the time delay circuit, and the relay is electrically connected with a lamp. 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 delay circuit and the relay; through being equipped with delay circuit for after switching power supply has output voltage, after delay circuit delay a period, 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, can avoid lamps and lanterns to start at switching power supply at the in-process that starts, guarantees that switching power supply supplies power stably, makes the brightening effect of lamps and lanterns stable no scintillation, does benefit to the life who improves lamps and lanterns.

Description

Control circuit for output voltage of time delay switch power supply

Technical Field

The utility model belongs to the field of lamp input voltage control, and particularly relates to a control circuit for output voltage of a time delay switch power supply.

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

The utility model aims to provide a control circuit for output voltage of a time delay switch power supply, which can solve at least one of the problems.

The utility model has the beneficial effects 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 delay circuit and the relay; through being equipped with delay circuit for after switching power supply has output voltage, after delay circuit delay a period, 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, can avoid lamps and lanterns to start at switching power supply at the in-process that starts, guarantees that switching power supply supplies power stably, makes the brightening effect of lamps and lanterns stable no scintillation, does benefit to the life who improves lamps and lanterns.

In some embodiments, the delay circuit is a 555 timer. Thus, the delay requirement can be met.

In some embodiments, the delay circuit includes an NE555D chip and a delay adjusting capacitor, the delay adjusting capacitor includes a tenth capacitor, an eleventh capacitor and a twelfth capacitor, and the tenth capacitor, the eleventh capacitor and the twelfth capacitor are connected in parallel and then connected to the sixth pin and the eighth pin of the NE555D chip. Therefore, by arranging the delay adjusting capacitors, the delay time of the delay circuit can be adjusted by adjusting the capacity of each corresponding capacitor, and the use requirement is met.

In some embodiments, the power supply circuit includes a 24V power supply chip, and the 24V power supply chip is TD1660 model by tide. Therefore, the use requirement of the circuit can be met.

In some embodiments, the control circuit for delaying the output voltage of the switching power supply further comprises a 5V voltage reference circuit, and the 5V voltage reference circuit is connected with the 24V power supply 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 of a control circuit for the output voltage of a time-delay switching power supply according to the present invention;

FIG. 2 is a schematic circuit diagram of the delay circuit of 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 a 5V voltage reference circuit according to the present invention.

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 control circuit of time delay switch power supply output voltage, includes supply circuit, delay circuit and relay, and supply circuit is connected with external switch power supply electricity, and delay circuit is connected with the supply circuit electricity, and the relay is connected with the delay circuit electricity, and the relay is connected with lamps and lanterns electricity. The "electrical connection" and "connection" are all connected by a wire. The control circuit of the output voltage of the time delay switch power supply can be used for controlling the time delay output voltage between any output voltage of the external switch power supply and a lamp, and can adjust the time delay circuit to achieve the corresponding time delay 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 relay uses a Songle relay SLA-12VDC-SL-C, and the relay is adopted to realize the on-off of high power by controlling a small signal, so that the power loss of the circuit is low. The relay may adopt a single coil or a double coil specification.

The delay circuit is a 555 timer.

The delay circuit comprises an NE555D chip and a delay adjusting capacitor, the delay adjusting capacitor comprises a tenth capacitor C10, an eleventh capacitor C11 and a twelfth capacitor C12, and the tenth capacitor C10, the eleventh capacitor C11 and the twelfth capacitor C12 are connected in parallel and then connected with a sixth pin and an eighth pin of the NE555D chip. Specifically, the NE555D chip is NE555D of Texas Instruments (TI) brand, and may be replaced by a 555 timer chip of another manufacturer capable of implementing the same function.

The power supply circuit comprises a 24V power supply chip, and the 24V power supply chip adopts a TD1660 model of Taide.

The control circuit for the output voltage of the time delay switch power supply further comprises a 5V voltage reference circuit, and the 5V voltage reference circuit is connected with a 24V power supply chip. The power supply chip of the 5V voltage reference circuit uses CJ78L05 of long-term electrical technology, and can be replaced by power supply chips of other different manufacturers.

When the control circuit of the output voltage of the time delay switch power supply is used, the time delay time of the time delay control part is adjusted by adjusting the capacities of the tenth capacitor C10, the eleventh capacitor C11 and the twelfth capacitor C12 of the capacitors. After the delayed counting is finished, a Pin 3 of the NE555D chip outputs a high level voltage of 5V, then a low level is provided for the base electrode of the PNP triode Q1, the relay is pulled in, and the switching power supply supplies power to the lamp.

In the actual use process, the size of the whole product is 75 × 69mm, and the size is small, so that the whole installation is convenient; the current of the control 20A can be realized.

According to the control circuit for the output voltage of the time delay switch power supply, the switch power supply does not immediately supply power to the lamp after having the output voltage, but supplies power to the lamp after delaying for a period of time through the time delay circuit, then the relay is conducted, and the switch power supply supplies power to the lamp, so that the power supply voltage of the lamp is not started from 0V.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The control circuit of the output voltage of the time delay switch power supply is characterized by comprising a power supply circuit, a time delay circuit and a relay, wherein the power supply circuit is electrically connected with an external switch power supply; the power supply circuit comprises a 24V power supply chip, and the 24V power supply chip adopts a TD1660 model of Taide; the delay circuit is a 555 timer.

2. The control circuit of the output voltage of the time delay switch power supply of claim 1, wherein the time delay circuit comprises an NE555D chip and a time delay adjusting capacitor, the time delay adjusting capacitor comprises a tenth capacitor (C10), an eleventh capacitor (C11) and a twelfth capacitor (C12), and the tenth capacitor (C10), the eleventh capacitor (C11) and the twelfth capacitor (C12) are connected in parallel and then connected with the sixth pin and the eighth pin of the NE555D chip.

3. The control circuit of the output voltage of the time delay switching power supply according to claim 1 or 2, characterized by further comprising a 5V voltage reference circuit, wherein the 5V voltage reference circuit is connected with a 24V power supply chip.