CN205883052U - Simple and easy DC power supply - Google Patents
Simple and easy DC power supply Download PDFInfo
- Publication number
- CN205883052U CN205883052U CN201620601032.1U CN201620601032U CN205883052U CN 205883052 U CN205883052 U CN 205883052U CN 201620601032 U CN201620601032 U CN 201620601032U CN 205883052 U CN205883052 U CN 205883052U
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- resistance
- electric capacity
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Abstract
The utility model provides a simple and easy DC power supply, it includes input, output, steady voltage chip U1, resistance R1, resistance R2, switch K1, electric capacity C1 and electric capacity C2, steady voltage chip U1 includes INPUT pin, OUTPUT pin and ADJUST pin, the input is connected with INPUT pin, electric capacity C1, the ADJUST pin is connected with switch K1, resistance R2's one end, the OUTPUT pin is connected with resistance R2's the other end, electric capacity C2, output, switch K1 can stir one of them is connected with resistance R1, resistance R3, electric capacity C1 and resistance R1, resistance R3, electric capacity C2 are connected back ground connection, steady voltage chip U1's model is LM317. Adopt the utility model discloses the scheme, it is substituting ordinary battery powered, resources are saved to prevent that the high voltage from burning out the product, convenience simple to use, one step of switching voltage.
Description
Technical field
This utility model relates to a kind of DC source, particularly relates to a kind of simple DC source.
Background technology
At present, remote controller need to use common batteries or adjustable DC power supply to supply electricity to product.When being remotely controlled device test,
Power to product with common batteries, need a large amount of battery, the wasting of resources can be caused；And with common adjustable DC power supply, employee surveys
The when of examination, voltage easily adjusts mistake, circuit board can be caused to burn out, reduce qualification rate and first-pass yield, have impact on manufacturing schedule.
Utility model content
For above technical scheme, the utility model discloses a kind of simple DC source, substitute common batteries and power, joint
About ERM；The maximum output 4.5V voltage of the simplest DC source, prevents voltage from adjusting mistake to cause high voltage to burn out product.
To this, the technical solution of the utility model is:
A kind of simple DC source, it include input, outfan, voltage stabilizing chip U1, resistance R1, resistance R2, switch K1,
Electric capacity C1 and electric capacity C2, described voltage stabilizing chip U1 include INPUT pin, OUTPUT pin and ADJUST pin, described input
Being connected with INPUT pin, electric capacity C1, described ADJUST pin is connected with switch K1, one end of resistance R2, described OUTPUT pin
It is connected with the other end of resistance R2, electric capacity C2, outfan；Described switch K1 can stir with resistance R1, resistance R3 one of them
Connect, described electric capacity C1 and resistance R1, resistance R3, electric capacity C2 be connected after ground connection；The model of described voltage stabilizing chip U1 is LM317.
Wherein, described input is connected with 12V power supply.
The technical solution of the utility model, utilizes the stabilizing voltage characteristic of three-terminal voltage-stabilizing chip LM317, and convenient remote controller supplies
For the purpose of electricity, utilizing LM317 principle of stabilized voltage to adjust peripheral resistance and control output voltage, input voltage 12V, when toggle switch is dialled
During to resistance R1 position, export 3V voltage；When toggle switch pushes resistance R3 position, export 4.5V.
As further improvement of the utility model, described resistance R1 is 150 Ω, and described resistance R3 is 270 Ω.
As further improvement of the utility model, described resistance R2 is 100 Ω.
As further improvement of the utility model, described electric capacity C1 is 470 μ F.
As further improvement of the utility model, described electric capacity C2 is 100 μ F.
As further improvement of the utility model, described simple DC source includes PTC(positive
Temperature coefficient, positive temperature coefficient) critesistor, one end of described PTC thermistor is with input even
Connecing, the other end of described PTC thermistor is connected with the INPUT pin of electric capacity C1 and voltage stabilizing chip U1.Use this technical scheme,
When short circuit occur in circuit or power supply, the resistance of PTC thermistor raises rapidly, can protect voltage stabilizing chip and test electricity
Road.
Compared with prior art, the beneficial effects of the utility model are:
First, use simple DC source of the present utility model, substitute common batteries and power, save ERM.
Second, use simple DC source of the present utility model, simultaneously because in the maximum output of this simple DC source
4.5V voltage, prevents high voltage from burning out product, improves qualification rate and first-pass yield.
3rd, use the technical solution of the utility model, it is simple, convenient to use, a step switching voltage, can be used for remote controller
And need to use in the product that 3V or 4.5V powers.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of this utility model embodiment 1.
Fig. 2 is the circuit diagram of this utility model embodiment 2.
Detailed description of the invention
Below in conjunction with the accompanying drawings, preferably embodiment of the present utility model is described in further detail.
Embodiment 1
A kind of simple DC source, as it is shown in figure 1, it includes input, outfan, voltage stabilizing chip U1, resistance R1, resistance
R2, switch K1, electric capacity C1 and electric capacity C2, described voltage stabilizing chip U1 include INPUT pin, OUTPUT pin and ADJUST pin,
Described input is connected with INPUT pin, electric capacity C1, and described ADJUST pin is connected with switch K1, one end of resistance R2, described
The other end of OUTPUT pin and resistance R2, electric capacity C2, outfan are connected；Described switch K1 can stir with resistance R1, resistance
R3 one of them connect, described electric capacity C1 and resistance R1, resistance R3, electric capacity C2 be connected after ground connection；The type of described voltage stabilizing chip U1
Number it is LM317.Wherein, described input is connected with 12V power supply.Described resistance R1 is 150 Ω, and described resistance R3 is 270 Ω.Institute
Stating resistance R2 is 100 Ω.Described electric capacity C1 is 470 μ F.Described electric capacity C2 is 100 μ F.
Embodiment 2
On the basis of embodiment 1, as in figure 2 it is shown, described simple DC source includes PTC thermistor, described PTC heat
One end of quick resistance is connected with input, the INPUT pipe of the other end of described PTC thermistor and electric capacity C1 and voltage stabilizing chip U1
Foot connects.Using this technical scheme, when short circuit occur in circuit or power supply, the resistance of PTC thermistor raises rapidly, permissible
Protection voltage stabilizing chip and test circuit.
The detailed description of the invention of the above is better embodiment of the present utility model, not limits this practicality with this new
The scope that is embodied as of type, scope of the present utility model includes being not limited to this detailed description of the invention, all according to this utility model
Shape, structure made equivalence change all in protection domain of the present utility model.
Claims (5)
1. a simple DC source, it is characterised in that: it includes input, outfan, voltage stabilizing chip U1, resistance R1, resistance
R2, switch K1, electric capacity C1 and electric capacity C2, described voltage stabilizing chip U1 include INPUT pin, OUTPUT pin and ADJUST pin,
Described input is connected with INPUT pin, electric capacity C1, and described ADJUST pin is connected with switch K1, one end of resistance R2, described
The other end of OUTPUT pin and resistance R2, electric capacity C2, outfan are connected；Described switch K1 can stir with resistance R1, resistance
R3 one of them connect, described electric capacity C1 and resistance R1, resistance R3, electric capacity C2 be connected after ground connection；The type of described voltage stabilizing chip U1
Number it is LM317.
Simple DC source the most according to claim 1, it is characterised in that: described resistance R1 is 150 Ω, described resistance R3
It is 270 Ω.
Simple DC source the most according to claim 2, it is characterised in that: described resistance R2 is 100 Ω.
Simple DC source the most according to claim 3, it is characterised in that: described electric capacity C1 is 470 μ F, described electric capacity C2
It is 100 μ F.
5. according to the simple DC source described in claim 1 ~ 4 any one, it is characterised in that: described simple DC source bag
Including PTC thermistor, one end of described PTC thermistor is connected with input, the other end of described PTC thermistor and electric capacity
The INPUT pin of C1 and voltage stabilizing chip U1 connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620601032.1U CN205883052U (en) | 2016-06-17 | 2016-06-17 | Simple and easy DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620601032.1U CN205883052U (en) | 2016-06-17 | 2016-06-17 | Simple and easy DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205883052U true CN205883052U (en) | 2017-01-11 |
Family
ID=57691498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620601032.1U Expired - Fee Related CN205883052U (en) | 2016-06-17 | 2016-06-17 | Simple and easy DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205883052U (en) |
-
2016
- 2016-06-17 CN CN201620601032.1U patent/CN205883052U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20210617 |