CN210577917U

CN210577917U - Intelligent power supply adapter for high-power 4K camera

Info

Publication number: CN210577917U
Application number: CN201921360759.5U
Authority: CN
Inventors: 何泽军; 何锡军
Original assignee: Guangzhou Sokong Electronic Technology Co ltd
Current assignee: Guangzhou Sokong Electronic Technology Co ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-19
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a high-power 4K camera intelligence power supply adapter, including battery, battery discharge seat, connecting plate, camera carry handle mounting fixture, elasticity adjust knob, carry handle contained angle and power output socket, battery discharge seat and power output socket pass through the connecting plate and the camera carry handle mounting fixture together, and battery discharge seat and power output socket are installed in the below of connecting plate, carry the handle contained angle to fix on the screw rod of elasticity adjust knob, and power output socket embeds power circuit board; the power supply circuit board comprises a first resistor, a first triode, a first diode, a first capacitor, a three-terminal voltage stabilizer, a second capacitor, a third capacitor, a second voltage-regulator tube, a second resistor, a voltage output end, a third resistor, a fourth capacitor, a thyristor, a fifth capacitor, a fourth resistor, a rectifier bridge, a transformer and a voltage input end. The utility model discloses circuit structure is comparatively simple, the cost is lower, the security and the reliability of convenient maintenance, circuit are higher.

Description

Intelligent power supply adapter for high-power 4K camera

Technical Field

The utility model relates to an adapter field, in particular to high-power 4K camera intelligence power supply adapter.

Background

The camera power adapter is used to charge the battery. The traditional camera power supply adapter can be used for installing different battery discharging seats aiming at different batteries, can adapt to cameras of different manufacturers and different models, and has wide application. The traditional camera power supply adapter can be made into a single battery power supply adapter or a double battery power supply adapter, and simultaneously supplies power to double headlamps or other additional electronic equipment of the camera. Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional camera power supply adapter, and it can be seen from fig. 1 that the power supply portion of the conventional camera power supply adapter uses many components, has a complex circuit structure and high hardware cost, and is inconvenient to maintain. In addition, since the power supply portion of the conventional camera power supply adapter lacks a corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a circuit structure comparatively simple, the cost is lower, the security of convenient maintenance, circuit and the higher high-power 4K camera intelligence power supply adapter of reliability.

The utility model provides a technical scheme that its technical problem adopted is: the intelligent power supply adapter for the high-power 4K camera comprises a battery, a battery discharge seat, a connecting plate, a camera lifting handle fixing clamp, a tightness adjusting knob, a lifting handle included angle and a power output socket, wherein the battery discharge seat and the power output socket are combined with the camera lifting handle fixing clamp through the connecting plate, the battery discharge seat and the power output socket are installed below the connecting plate, the lifting handle included angle is fixed on a screw rod of the tightness adjusting knob, the screw rod of the tightness adjusting knob is fixed in the camera lifting handle fixing clamp, the battery is arranged on the battery discharge seat, and a power circuit board is arranged in the power output socket;

the power supply circuit board comprises a first resistor, a first triode, a first diode, a first capacitor, a three-terminal voltage stabilizer, a second capacitor, a third capacitor, a second voltage-stabilizing tube, a second resistor, a voltage output end, a third resistor, a fourth capacitor, a thyristor, a fifth capacitor, a fourth resistor, a rectifier bridge, a transformer and a voltage input end, wherein one end of the voltage input end is connected with one end of a primary coil of the transformer, the other end of the voltage input end is connected with the other end of the primary coil of the transformer, one end of a secondary coil of the transformer is connected with one input end of the rectifier bridge, the other end of the secondary coil of the transformer is connected with the other input end of the rectifier bridge, one output end of the rectifier bridge is respectively connected with one end of the fifth capacitor, one end of the fourth resistor, a cathode of the thyristor, one end of the fourth capacitor and one end of the third resistor, the other output end of the rectifier bridge is respectively connected with the other end of the fifth capacitor, the anode of the thyristor, the other end of the fourth capacitor and the other end of the third resistor, the emitter of the first triode is respectively connected with the cathode of the first diode and one end of the first resistor, the base of the first triode is respectively connected with the first pin of the three-terminal voltage stabilizer and one end of the first capacitor, the collector of the first triode is respectively connected with the anode of the first diode, the second pin of the three-terminal voltage stabilizer, one end of the second capacitor, one end of the third capacitor, the cathode of the second voltage stabilizing tube and one end of the voltage output end, the anode of the second voltage stabilizing tube is respectively connected with one end of the second resistor, the other end of the fourth resistor and the control electrode of the thyristor, and the other end of the first resistor is respectively connected with one end of the third resistor, The other end of the first capacitor, a third pin of the three-terminal voltage stabilizer, the other end of the second capacitor, the other end of the third capacitor, the other end of the second resistor and the other end of the voltage output end are connected.

In the high-power 4K camera intelligent power supply adapter of the present invention, the resistance of the fourth resistor is 42K Ω.

High-power 4K camera intelligence power supply adapter in, power supply circuit board still includes the third diode, the positive pole of third diode with the base of first triode is connected, the negative pole of third diode respectively with three terminal regulator's first pin and the one end of first electric capacity are connected.

In the high-power 4K camera intelligent power supply adapter of the present invention, the third diode is E-202T.

In the high-power 4K camera intelligence power supply adapter, power supply circuit board still includes the fifth resistance, an input of the one end rectifier bridge of fifth resistance is connected, the other end of fifth resistance with the primary coil's of transformer one end is connected.

In the high-power 4K camera intelligent power supply adapter of the present invention, the resistance of the fifth resistor is 36K Ω.

In the high-power 4K camera intelligence power supply adapter of the utility model, first triode is PNP type triode.

Implement the utility model discloses a high-power 4K camera intelligence power supply adapter has following beneficial effect: because the camera handle is provided with a battery, a battery discharge seat, a connecting plate, a camera handle fixing clamp, a tightness adjusting knob, a handle included angle and a power output socket, the power output socket is internally provided with a power circuit board, the power circuit board comprises a first resistor, a first triode, a first diode, a first capacitor, a three-terminal voltage stabilizer, a second capacitor, a third capacitor, a second voltage stabilizing tube, a second resistor, a voltage output end, a third resistor, a fourth capacitor, a thyristor, a fifth capacitor, a fourth resistor, a rectifier bridge, a transformer and a voltage input end, compared with the power supply part of the traditional camera power supply adapter, the used components are fewer, and because some components are saved, the hardware cost can be reduced, in addition, the fourth resistor is used for current limiting protection, so that the circuit structure is simple, the cost is low, the maintenance is convenient, and the safety and the reliability of the circuit are high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional camera power adapter;

fig. 2 is a schematic diagram of an explosion structure in an embodiment of the intelligent power supply adapter for a high-power 4K camera according to the present invention;

FIG. 3 is an assembly view of the power outlet socket installed under the connection plate in the embodiment;

fig. 4 is a schematic circuit diagram of the power supply module in the embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the embodiment of the high-power 4K camera intelligent power supply adapter of the present invention, the explosion structure diagram of the high-power 4K camera intelligent power supply adapter is shown in fig. 2. In fig. 2, this high-power 4K camera intelligence power supply adapter includes battery 1, battery discharge seat 2, the connecting plate 3, camera carries handle mounting fixture 4, the tight regulation knob 5, carry handle contained angle 6 and power output socket 7, wherein, battery discharge seat 2 and power output socket 7 carry handle mounting fixture 4 through connecting plate 3 and camera to combine together, battery discharge seat 2 and power output socket 7 are installed in the below of connecting plate 3, carry handle contained angle 6 to fix on the screw rod of tight regulation knob 5, the screw rod of tight regulation knob 5 is fixed in camera carries in handle mounting fixture 4, battery 1 sets up on battery discharge seat 2, power output socket 7 embeds supply circuit board 71.

Fig. 3 is an assembly diagram of the power output socket installed under the connection board after the power output socket is screwed and fixed in the embodiment. Because the length of the batteries of different manufacturers is different, when the battery discharging seat 2 is long, the power output socket 7 is arranged below the connecting plate 3. The included angle 6 of the two lifting handles is fixed on a screw rod of the tightness adjusting knob 5, and the screw rod of the tightness adjusting knob 5 is fixed in the camera lifting handle fixing clamp 4. The included angle 6 of the two handles can move inwards or outwards simultaneously under the action of the tightness adjusting knob 5 so as to tighten or loosen the clamped objects. When the tightness adjusting knob 5 is rotated to open the included angle 6 between the two corresponding lifting handles, the intelligent power supply adapter of the high-power 4K camera can be ridden on the lifting handle of the camera, the tightness adjusting knob 5 is screwed until the included angle 6 between the two corresponding lifting handles tightly hoops the lifting handle of the camera, and then the battery 1 is inserted into the battery discharging seat 2, and then the power supply output socket 7 can supply power.

Fig. 4 is a schematic circuit diagram of the power module in this embodiment, in fig. 4, the power circuit board 71 includes a first resistor R1, a first transistor Q1, a first diode D1, a first capacitor C1, a three-terminal regulator U1, a second capacitor C2, a third capacitor C3, a second regulator D2, a second resistor R2, a voltage output terminal Vo, a third resistor R3, a fourth capacitor C4, a thyristor VS, a fifth capacitor C5, a fourth resistor R4, a rectifier bridge Z, a transformer T, and a voltage input terminal Vin, wherein one end of the voltage input terminal Vin is connected to one end of a primary winding of the transformer T, the other end of the voltage input terminal Vin is connected to the other end of the primary winding of the transformer T, one end of a secondary winding of the transformer T is connected to one input end of the rectifier bridge Z, one output end of the rectifier bridge Z is connected to one end of a fifth capacitor C5, one end of the rectifier bridge Z is connected to another input end of the rectifier bridge Z, One end of a fourth resistor R4, a cathode of a thyristor VS, one end of a fourth capacitor C4 and one end of a third resistor R3 are connected, the other output end of a rectifier bridge Z is respectively connected with the other end of a fifth capacitor C5, an anode of the thyristor VS, the other end of a fourth capacitor C4 and the other end of a third resistor R3, an emitter of a first triode Q1 is respectively connected with a cathode of a first diode D1 and one end of a first resistor R1, a base of a first triode Q1 is respectively connected with a first pin of a three-terminal regulator U1 and one end of a first capacitor C1, a collector of the first triode Q1 is respectively connected with an anode of a first diode D1, a second pin of the three-terminal regulator U1, one end of a second capacitor C2, one end of a third capacitor C3, a cathode of a second regulator D2 and one end of a voltage output end Vo, and an anode of the second regulator D2 is respectively connected with one end of a second resistor R2, The other end of the fourth resistor R4 is connected with the control electrode of the thyristor VS, and the other end of the first resistor R1 is respectively connected with one end of the third resistor R3, the other end of the first capacitor C1, the third pin of the three-terminal regulator U1, the other end of the second capacitor C2, the other end of the third capacitor C3, the other end of the second resistor R2 and the other end of the voltage output end Vo.

In this embodiment, compared with the power supply part of the conventional camera power supply adapter, the power supply circuit board 71 has fewer used components, a simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. The fourth resistor R4 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fourth resistor R4 is located is large, the current of the branch where the fourth resistor R4 is located can be reduced by the fourth resistor R4, so that the branch is kept in a normal operating state, and the components in the circuit are not burned out due to too large current, so that the safety and reliability of the circuit are high.

It should be noted that in the present embodiment, the resistance of the fourth resistor R4 is 42k Ω, and certainly, in practical applications, the resistance of the fourth resistor R4 may be adjusted according to specific situations, that is, the resistance of the fourth resistor R4 may be increased or decreased according to specific situations.

In this embodiment, the model of the first diode D1 is 1S1885, the model of the thyristor VS is SF8841, the model of the first triode Q1 is 25B683, the model of the three-terminal regulator U1 is H7805, the model of the rectifier bridge Z is 4G4B41, and the model of the second regulator D2 is 2CW 103.

The working principle of the power circuit board 71 is as follows: after the 220V alternating current is reduced by the transformer T, the output end obtains stable voltage through rectification and filtering by the rectifier bridge Z and subsequent circuits. The maximum output current of the three-terminal regulator U1 is 1.5A, and if the output current is larger than 1.5A, the output current is enlarged, so that a high-power first triode Q1 is connected to the periphery of the three-terminal regulator U1. The parallel connection type current spreading mode is adopted, so that the sum of two output currents can meet the requirement of outputting 1.6A current. If a larger output current is needed, a plurality of triodes can be connected in parallel instead.

Even if a voltage regulator circuit is arranged in the three-terminal regulator U1, overvoltage phenomenon can still occur at the output end of the voltage regulator circuit formed by the three-terminal regulator U1 and the first triode Q1. In order to ensure the safety of the load, the power supply is provided with an overvoltage protection circuit on the basis of a typical application circuit of an integrated block. The overvoltage protection circuit is composed of a second voltage regulator tube D2, a second resistor R2, a thyristor VS and the like.

When the power supply works normally, the output voltage is 7.2V, and the thyristor VS is in a cut-off state. When the output voltage of the voltage-stabilized power supply exceeds a limit value due to some reason (such as damage of an integrated block or breakdown of a regulating tube), namely greater than or equal to 5.6V, the second voltage-stabilized tube D2 breaks down, and the sampling voltage rises to trigger the thyristor VS to be conducted.

The first diode D1 is used to protect the first transistor Q1. The fifth capacitor C5 can suppress high frequency harmonic interference. The third resistor R3 provides a bleed current loop for the fourth capacitor C4.

In this embodiment, the first transistor Q1 is a PNP transistor. Of course, in practical applications, the first transistor Q1 may also be an NPN transistor, but the circuit structure may also be changed accordingly.

In this embodiment, the power circuit board 71 further includes a third diode D3, an anode of the third diode D3 is connected to a base of the first transistor Q1, and a cathode of the third diode D3 is connected to the first pin of the three-terminal regulator U1 and one end of the first capacitor C1, respectively. The third diode D3 is a current limiting diode for current limiting protection. The current limiting protection principle is as follows: when the base current of the first triode Q1 is large, the base current of the first triode Q1 can be reduced by the third diode D3 to keep the base current in a normal working state, so that the components in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that in the present embodiment, the third diode D3 has a model number E-202T. Of course, in practical applications, the third diode D3 may also be another type of diode with similar functions.

In this embodiment, the power circuit board 71 further includes a fifth resistor R5, one end of the fifth resistor R5 is connected to one input end of the rectifier bridge Z, and the other end of the fifth resistor R5 is connected to one end of the primary coil of the transformer T. The fifth resistor R5 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fifth resistor R5 is located is large, the current of the branch where the fifth resistor R5 is located can be reduced by the fifth resistor R5, so that the branch can be kept in a normal operating state, and the component in the circuit can not be burned out due to the large current, so that the safety and reliability of the circuit can be further enhanced. It should be noted that in the present embodiment, the resistance of the fifth resistor R5 is 36k Ω, and certainly, in practical applications, the resistance of the fifth resistor R5 may be adjusted according to specific situations, that is, the resistance of the fifth resistor R5 may be increased or decreased according to specific situations.

In short, in this embodiment, because the power output socket 7 is internally provided with the power supply circuit board 71, compared with the power supply part of the conventional camera power supply adapter, the power supply circuit board 71 has fewer used components, simpler circuit structure and convenient maintenance, and because some components are saved, the hardware cost can be reduced. In addition, since the power supply circuit board 71 is provided with a current limiting resistor, the safety and reliability of the circuit are high.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The intelligent power supply adapter for the high-power 4K camera is characterized by comprising a battery, a battery discharge seat, a connecting plate, a camera lifting handle fixing clamp, a tightness adjusting knob, a lifting handle included angle and a power output socket, wherein the battery discharge seat and the power output socket are combined with the camera lifting handle fixing clamp through the connecting plate, the battery discharge seat and the power output socket are installed below the connecting plate, the lifting handle included angle is fixed on a screw rod of the tightness adjusting knob, the screw rod of the tightness adjusting knob is fixed in the camera lifting handle fixing clamp, the battery is arranged on the battery discharge seat, and a power circuit board is arranged in the power output socket;

2. The intelligent power supply adapter for high-power 4K cameras according to claim 1, wherein the fourth resistor is 42K Ω.

3. The intelligent power supply adapter for high-power 4K cameras as claimed in claim 2, wherein the power circuit board further comprises a third diode, an anode of the third diode is connected with a base of the first triode, and a cathode of the third diode is respectively connected with the first pin of the three-terminal regulator and one end of the first capacitor.

4. The high-power 4K camera intelligent power supply adapter as claimed in claim 3, wherein the third diode is E-202T in type.

5. The intelligent power supply adapter for high-power 4K cameras as claimed in claim 4, wherein the power circuit board further comprises a fifth resistor, one end of the fifth resistor is connected with one input end of the rectifier bridge, and the other end of the fifth resistor is connected with one end of the primary coil of the transformer.

6. The high-power 4K camera intelligent power supply adapter according to claim 5, wherein the resistance value of the fifth resistor is 36K Ω.

7. The intelligent power supply adapter for high-power 4K cameras according to any one of claims 1 to 6, wherein the first triode is a PNP type triode.