Constant-voltage constant-current circuit design FPCB (flexible printed circuit board)

Abstract

The utility model discloses a constant-voltage constant-current circuit design FPCB, and relates to the field of circuit boards. The constant-voltage constant-current circuit design FPCB comprises an insulating substrate and a circuit wire arranged on the insulating substrate, and the insulating substrate is provided with a current-limiting voltage-reducing resistor bonding pad, a current-limiting resistor bonding pad and a three-terminal voltage-stabilizing triode bonding pad; the circuit wiring and the current-limiting voltage-reducing resistor bonding pad jointly form a constant voltage circuit; and the circuit routing, the current-limiting resistor bonding pad and the three-terminal voltage-stabilizing triode bonding pad form a constant current circuit. According to the constant-voltage constant-current circuit, the FPCB is designed, and when a user actually uses the constant-voltage constant-current circuit and the constant-voltage constant-current circuit needs to be used as a constant-voltage circuit, a current-limiting and voltage-reducing resistor is directly welded at a current-limiting and voltage-reducing resistor bonding pad; when the circuit needs to be used as a constant-current circuit, a current-limiting resistor and a three-terminal voltage-stabilizing triode are directly welded at the current-limiting resistor bonding pad and the three-terminal voltage-stabilizing triode bonding pad, so that the universal design is realized, the adaptability is higher, and the mold opening, design and inventory costs of enterprises are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board technical field, concretely is a kind of constant-voltage constant-current general circuit design FPCB board. BACKGROUND

[0002] FPCB board is a kind of flexible insulating substrate as carrier, corresponding circuit is formed by copper foil wiring on surface, to form flexible circuit board, because its substrate is flexible insulating material, thus can be bent deformation at will after being made, in many special installation scenes, it has the characteristics of reducing assembly space, adapting to special-shaped assembly channel.

[0003] And the circuit design on the FPCB board on the market at present all only ensure the circuit of one of constant voltage or constant current, often ignore FPCB board product function and universality, invisibly produce many kinds of products, the weak point of such design increases product warehouse cost, also increases inventory management cost, also makes the adaptability of FPCB board reduce, for this, a constant-voltage constant-current general circuit design FPCB board is provided. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a kind of constant-voltage constant-current general circuit design FPCB board, solve the circuit design on the FPCB board on the market at present all only ensure the circuit of one of constant voltage or constant current, often ignore FPCB board product function and universality, invisibly produce many kinds of products, the weak point of such design increases product warehouse cost, also increases inventory management cost, also makes the adaptability of FPCB board reduce Problem.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a kind of constant-voltage constant-current general circuit design FPCB board, including insulating substrate and circuit wiring being set on insulating substrate, current-limiting voltage-reducing resistor pad, current-limiting resistor pad and three-terminal voltage regulator triode pad are arranged on the insulating substrate;

[0006] The circuit wiring and current-limiting voltage-reducing resistor pad jointly constitute constant-voltage circuit;

[0007] The circuit wiring, current-limiting resistor pad and three-terminal voltage regulator triode pad constitute constant-current circuit.

[0008] Preferably, the insulating substrate is PI film.

[0009] Preferably, the circuit wiring is copper foil with multiple loop circuits, and the copper foil is fixedly adhered to one side surface of the PI film.

[0010] Preferably, the current-limiting voltage-reducing resistor pad, current-limiting resistor pad and three-terminal voltage regulator triode pad are electrically connected with the copper foil.

[0011] Preferably, the back of the PI film is provided with a center axis mark, and the PI film is provided with a cutting mark perpendicular to the center axis mark.

[0012] Preferably, the PI film is further provided with an LED lamp bead pad fixedly arranged thereon, and the LED lamp bead pad is electrically connected with the copper foil.

[0013] Preferably, the PI film is provided with a reinforcing edge on both sides.

[0014] Preferably, the PI film is provided with an assembly positioning hole on an outer surface.

[0015] The utility model discloses a kind of constant-voltage constant-current general circuit design FPCB board, it has the beneficial effects as follows: the general circuit design FPCB board in the process of design, by simultaneously setting current-limiting voltage-reducing resistor pad, current-limiting resistor pad and three-terminal voltage regulator triode pad on insulating substrate, to make that circuit wiring and current-limiting voltage-reducing resistor pad jointly constitute constant-voltage circuit;Circuit wiring, current-limiting resistor pad and three-terminal voltage regulator triode pad constitute constant-current circuit, to make the FPCB board have the common design of constant-voltage constant-current, when it needs to be used as constant-voltage circuit when actual use of user, current-limiting voltage-reducing resistor is directly welded at current-limiting voltage-reducing resistor pad;When need to be used as constant-current circuit, current-limiting resistor and three-terminal voltage regulator triode are directly welded at current-limiting resistor pad and three-terminal voltage regulator triode pad, to realize generalization design, more stronger adaptability, reduce enterprise opening mould, design and inventory cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Fig. 1 It is the whole back structure schematic view of the utility model;

[0018] Fig. 2 It is the whole front structure schematic view of the utility model.

[0019] In the drawing: 1, insulating substrate; 2, reinforcing edge; 3, center axis mark; 4, LED lamp bead pad; 5, current-limiting voltage-reducing resistor pad; 6, current-limiting resistor pad; 7, three-terminal voltage regulator triode pad; 8, assembly positioning hole; 9, circuit wiring; 10, cutting mark. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] The utility model discloses a kind of constant voltage constant current general circuit design FPCB board, solve the circuit design on the FPCB board on current market, only ensure that there is one of the functions of constant voltage or constant current circuit, often ignore FPCB board product function and universality, invisibly produce product numerous category, the weak point of such design increases product warehouse cost, simultaneously also increases inventory management cost, simultaneously also make the adaptability of FPCB board reduces problem.

[0022] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0023] The utility model embodiment discloses a kind of constant voltage constant current general circuit design FPCB board.

[0024] According to the drawings Figs. 1-2 As shown, including insulating substrate 1 and circuit trace 9 set on insulating substrate 1, current-limiting voltage-reducing resistor pad 5, current-limiting resistor pad 6 and three-terminal voltage regulator triode pad 7 are arranged on insulating substrate 1;

[0025] Circuit trace 9 and current-limiting voltage-reducing resistor pad 5 jointly constitute constant voltage circuit;

[0026] Circuit trace 9, current-limiting resistor pad 6 and three-terminal voltage regulator triode pad 7 constitute constant current circuit.

[0027] By simultaneously setting current-limiting voltage-reducing resistor pad 5, current-limiting resistor pad 6 and three-terminal voltage regulator triode pad 7 on insulating substrate 1, so that circuit trace 9 and current-limiting voltage-reducing resistor pad 5 jointly constitute constant voltage circuit;Circuit trace 9, current-limiting resistor pad 6 and three-terminal voltage regulator triode pad 7 constitute constant current circuit, so that the FPCB board has the common design of constant voltage and constant current, when it needs to be used as constant voltage circuit when actual use by user, directly solder current-limiting voltage-reducing resistor at current-limiting voltage-reducing resistor pad 5;When it needs to be used as constant current circuit, directly solder current-limiting resistor and three-terminal voltage regulator triode at current-limiting resistor pad 6 and three-terminal voltage regulator triode pad 7, to realize general design, stronger adaptability, reduce enterprise mold, design and inventory cost.

[0028] The insulating substrate 1 is a PI film, which is a polyimide film, is yellow and transparent as a whole, has excellent high and low temperature resistance, electrical insulation, adhesion, radiation resistance, dielectric resistance, and can be used for a long time in a temperature range of -269 DEG C to 280 DEG C, is the best thin film insulating material in the world, and is particularly suitable for being used as a flexible printed circuit board substrate and various high-temperature-resistant motor and electrical insulating materials.

[0029] The circuit trace 9 is a copper foil with multiple loop circuits, and the copper foil is fixedly adhered to one side surface of the PI film, and an insulating coating is coated on the other side surface of the copper foil, so that the external insulation of the copper foil is realized, and the copper foil is also protected.

[0030] The current-limiting voltage-reducing resistor pad 5, the current-limiting resistor pad 6 and the three-terminal voltage stabilizing transistor pad 7 are electrically connected with the copper foil, so that the FPCB board has the basis of constant voltage and constant current circuit transformation, and the applicability is enhanced.

[0031] The PI film is provided with a central axis mark 3 on the back surface, so as to facilitate positioning when various pads and electronic elements are assembled, and the PI film is provided with a cutting mark 10 perpendicular to the central axis mark 3, which is used for indicating when the FPCB board is cut.

[0032] The PI film is also fixedly provided with an LED lamp bead pad 4, which is electrically connected with the copper foil, and the LED lamp bead pad 4 is provided with an LED lamp bead by welding, so as to emit light when the entire FPCB board is powered.

[0033] The PI film is provided with a reinforced edge wrapping 2 on both sides, so as to avoid tearing of the FPCB board during use, and when the edge of the FPCB needs to be in electrical contact with another component, the edge coating ensures consistent and reliable electrical paths of these connections.

[0034] The PI film is provided with an assembly positioning hole 8 on the outer surface, so as to facilitate positioning and fixing during installation.

[0035] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A constant voltage and constant current universal circuit design FPCB board, comprising an insulating substrate (1) and circuit traces (9) disposed on the insulating substrate (1), characterized in that, The insulating substrate (1) is provided with a current-limiting voltage-dropping resistor pad (5), a current-limiting resistor pad (6), and a three-terminal Zener transistor pad (7). The circuit trace (9) and the current-limiting and voltage-reducing resistor pad (5) together form a constant voltage circuit; The circuit trace (9), the current-limiting resistor pad (6), and the three-terminal Zener transistor pad (7) form a constant current circuit.

2. The FPCB board for a constant voltage and constant current universal circuit design according to claim 1, characterized in that: The insulating substrate (1) is a PI film.

3. The FPCB board for a constant voltage and constant current universal circuit design according to claim 2, characterized in that: The circuit trace (9) is a copper foil with multiple loop circuits, and the copper foil is fixedly adhered to one side surface of the PI film.

4. The FPCB board for a constant voltage and constant current universal circuit design according to claim 3, characterized in that: The current-limiting voltage-reducing resistor pad (5), the current-limiting resistor pad (6), and the three-terminal voltage regulator transistor pad (7) are all electrically connected to the copper foil.

5. The FPCB board for a constant voltage and constant current universal circuit design according to claim 2, characterized in that: The back of the PI film is provided with a central axis mark (3), and the PI film is provided with a cutting mark (10) perpendicular to the central axis mark (3).

6. The FPCB board for a constant voltage and constant current universal circuit design according to claim 3, characterized in that: LED lamp bead pads (4) are also fixedly disposed on the PI film, and the LED lamp bead pads (4) are electrically connected to the copper foil.

7. The FPCB board for a constant voltage and constant current universal circuit design according to claim 2, characterized in that: The PI film has reinforced edging on both sides (2).

8. The FPCB board for a constant voltage and constant current universal circuit design according to claim 2, characterized in that: The outer surface of the PI film is provided with assembly positioning holes (8).

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