CN206164070U - Overload indication constant voltage power supply circuit - Google Patents
Overload indication constant voltage power supply circuit Download PDFInfo
- Publication number
- CN206164070U CN206164070U CN201621118015.9U CN201621118015U CN206164070U CN 206164070 U CN206164070 U CN 206164070U CN 201621118015 U CN201621118015 U CN 201621118015U CN 206164070 U CN206164070 U CN 206164070U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- colelctor electrode
- electric capacity
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an overload indication constant voltage power supply circuit, its characterized in that: mainly by three terminal regulator U, triode VT1, triode VT2, triode VT3, pilot lamp BL, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, diode D1 and zener diode D2 constitute. The utility model has the advantages of reasonable design, light energy does not satisfy power supply circuit's operation requirement, can also advance line display through the pilot lamp when transshipping with the electric loading, can point out the user no longer need cost time energy and go the investigation to lead to the fact the abnormal conditions of stopping work with the electric loading with the electric loading overstrain circumstances, user in the very first time, consequently brings very big facility for the user, is fit for wide use.
Description
Technical field
The utility model is related to a kind of power circuit, more particularly to a kind of overload indicates voltage-stabilized power supply circuit.
Background technology
Power circuit is used to connect power supply and use electric loading, so as to by power supply supply load.When load overload, power supply electricity
Lu Zehui disconnects, to prevent from damaging the electronic device of power circuit and use electric loading.After power circuit disconnects, power supply cannot be to negative
Power supply is carried, load then can quit work.Due to load because due to the work that abends then needs investigation exception occur, using
When be difficult the very first time find power circuit because with electric loading transship and cause circuit to disconnect, so as to what is stopped work to load abnormal
Investigation work brings great difficulty.
Utility model content
The purpose of this utility model is to provide a kind of overload to indicate voltage-stabilized power supply circuit, to expect that electric loading mistake can be being used
Instruction is made during load, so as to the user power utilization situation that load is transshipped can be pointed out in the very first time.
The utility model is achieved through the following technical solutions：
One kind overload indicates voltage-stabilized power supply circuit, mainly by three terminal regulator U, triode VT1, triode VT2, and triode
VT3, positive pole is sequentially connected Jing after indicator lamp BL and resistance R1 with the emitter stage of triode VT1, the collection of negative pole and triode VT1
The electric capacity C1 that electrode is connected, P poles are connected Jing after resistance R2 with the emitter stage of triode VT2, N poles Jing after resistance R6 with three poles
The diode D1 that the colelctor electrode of pipe VT3 is connected, P poles are connected with the colelctor electrode of triode VT3, the base of N poles and triode VT3
The Zener diode D2 that pole is connected, the electricity being serially connected between the emitter stage of triode VT2 and the ADJ pins of three terminal regulator U
Resistance R3, the resistance R4 being serially connected between the base stage of the base stage of triode VT2 and triode VT3, are serially connected in the current collection of triode VT1
Resistance R5 between the base stage of pole and triode VT3, the resistance R7 being serially connected between the colelctor electrode of triode VT3 and emitter stage,
The electric capacity C2 that positive pole is connected with the ADJ pins of three terminal regulator U, negative pole is connected with the colelctor electrode of triode VT1, Yi Jizheng
The electric capacity C3 compositions that pole is connected with the emitter stage of triode VT3, negative pole is connected with the colelctor electrode of triode VT1；Described three
The colelctor electrode of pole pipe VT2 is connected with the colelctor electrode of triode VT1, and its emitter stage is connected with the base stage of triode VT1；It is described
The P poles of diode D1 are connected with the positive pole of electric capacity C1, and its N pole is connected with the IN pins of three terminal regulator U；The triode
The colelctor electrode of VT3 is connected with the OUT pins of three terminal regulator U；It is defeated that the positive pole of the electric capacity C1 collectively constitutes power supply with negative pole
Enter end, the negative pole of the electric capacity C3 collectively constitutes output end with the colelctor electrode of triode VT3.
Further, the triode VT1～VT3 is 3AX51 triodes.
Further, the diode D1 is 1N4001 commutation diodes, and Zener diode D2 is the pole of 2CW75 voltage stabilizings two
Pipe.
In order to ensure effect, the three terminal regulator U is LM317 voltage-stablizers.
The utility model compared with prior art, with advantages below and beneficial effect：
(1) it is of the present utility model to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.The utility model structure design is closed
Reason, luminous energy does not meet the use requirement of power circuit, moreover it is possible to shown by indicator lamp when being transshipped with electric loading, can be the
The situation of one time prompting user power utilization load overload, user no longer needs cost time energy to go investigation to cause to be stopped with electric loading
The abnormal conditions of work, therefore bring great convenience to user.
(2) three terminal regulator U of the present utility model can also with resistance R3, resistance R6, electric capacity C2 and Zener diode D2
One mu balanced circuit of composition, can carry out voltage stabilizing process to power supply, in order to provide more stable voltage for load.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Specific embodiment
The utility model is described in further detail with reference to embodiment, but embodiment of the present utility model is not
It is limited to this.
Embodiment
As shown in figure 1, overload of the present utility model indicates voltage-stabilized power supply circuit, mainly by three terminal regulator U, triode
VT1, triode VT2, triode VT3, indicator lamp BL, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, electricity
Resistance R4, resistance R5, resistance R6, resistance R7, diode D1 and Zener diode D2 composition.In order to ensure reality of the present utility model
Border using effect, the three terminal regulator U uses LM317 voltage-stablizers, and the triode VT1～VT3 adopts 3A,X51 tri-
Realizing, diode D1 is then realized pole pipe using 1N4001 commutation diodes.The resistance of the resistance R1 be 800 Ω, resistance
The resistance of R2 is 4.7k Ω, and the resistance of resistance R4 is 22k Ω, and the resistance of resistance R5 is 1.5k Ω, and the resistance of resistance R7 is 500
Ω.The indicator lamp BL generally realizes that the indicator lamp BL in the present embodiment is realized from red globe lamp using chromolume.
During connection, the positive pole of the electric capacity C1 sequentially Jing after indicator lamp BL and resistance R1 with the emitter stage phase of triode VT1
Connection, its negative pole is connected with the colelctor electrode of triode VT1.The P poles of the diode D1 are Jing after resistance R2 with triode VT2's
Emitter stage is connected, and its N pole is connected Jing after resistance R6 with the colelctor electrode of triode VT3.The P poles of the Zener diode D2 with
The colelctor electrode of triode VT3 is connected, and its N pole is connected with the base stage of triode VT3.The resistance R3 is serially connected in triode
Between the emitter stage of VT2 and the ADJ pins of three terminal regulator U, the resistance R4 is serially connected in the base stage and triode of triode VT2
Between the base stage of VT3, the resistance R5 is serially connected between the base stage of the colelctor electrode of triode VT1 and triode VT3, the resistance
R7 is serially connected between the colelctor electrode of triode VT3 and emitter stage.The positive pole of the electric capacity C2 and the ADJ pins of three terminal regulator U
It is connected, its negative pole is connected with the colelctor electrode of triode VT1.The positive pole of the electric capacity C3 and the emitter stage phase of triode VT3
Connection, its negative pole is connected with the colelctor electrode of triode VT1.
Meanwhile, the colelctor electrode of the triode VT2 is connected with the colelctor electrode of triode VT1, its emitter stage and triode
The base stage of VT1 is connected.The P poles of the diode D1 are connected with the positive pole of electric capacity C1, the IN of its N pole and three terminal regulator U
Pin is connected.The colelctor electrode of the triode VT3 is connected with the OUT pins of three terminal regulator U.The positive pole of the electric capacity C1
Power input is collectively constituted with negative pole, the negative pole of the electric capacity C3 collectively constitutes output end with the colelctor electrode of triode VT3, should
Output end connection electric loading.
When using, the electric capacity C1 is used to be filtered to being input into power supply of the present utility model, and electric capacity C1 selects capacitance
For the electric capacity of 470 μ F, electric capacity C3 is then from the electric capacity that capacitance is 220 μ F realizing.The three terminal regulator U and resistance R3, electricity
Resistance R6, electric capacity C2 and Zener diode D2 collectively constitute a mu balanced circuit, can carry out voltage stabilizing process to power supply, in order to for
Load provides more stable voltage.Wherein, the resistance R3 adopts resistance for the resistance of 1k Ω to realize with resistance R6, institute
The capacitance for stating electric capacity C2 is then 1000 μ F, and Zener diode D2 is then realized using 2CW75 Zener diodes.When normally using,
Indicator lamp BL extinguishes.When being transshipped with electric loading, output voltage reduces, and triode VT2 is turned off with triode VT3, and three ends are steady
Depressor U is also switched off with diode D1, and triode VT1 conductings, indicator lamp BL is turned on and is lit, you can prompting user power utilization load
Transship and cause circuit to disconnect, then quit work with electric loading.
It is of the present utility model to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.The utility model reasonable in design,
Luminous energy does not meet the use requirement of power circuit, moreover it is possible to shown by indicator lamp when being transshipped with electric loading, can be first
The situation of time prompting user power utilization load overload, user no longer needs cost time energy to go investigation to cause to be stopped work with electric loading
Abnormal conditions, therefore bring great convenience to user.Meanwhile, the three terminal regulator U and resistance R3, resistance R6, electric capacity
C2 and Zener diode D2 can also constitute a mu balanced circuit, can carry out voltage stabilizing process to power supply, in order to provide for load
More stable voltage.
As described above, just can preferably realize the utility model.
Claims (4)
1. a kind of overload indicates voltage-stabilized power supply circuit, it is characterised in that：Mainly by three terminal regulator U, triode VT1, triode
VT2, triode VT3, positive pole is sequentially connected Jing after indicator lamp BL and resistance R1 with the emitter stage of triode VT1, negative pole and three
The electric capacity C1 that the colelctor electrode of pole pipe VT1 is connected, P poles are connected Jing after resistance R2 with the emitter stage of triode VT2, N poles Jing is electric
The diode D1 that is connected with the colelctor electrode of triode VT3 after resistance R6, P poles are connected with the colelctor electrode of triode VT3, N poles and
The Zener diode D2 that the base stage of triode VT3 is connected, is serially connected in the emitter stage of triode VT2 and the ADJ of three terminal regulator U
Resistance R3 between pin, the resistance R4 being serially connected between the base stage of the base stage of triode VT2 and triode VT3, is serially connected in three
Resistance R5 between the colelctor electrode of pole pipe VT1 and the base stage of triode VT3, is serially connected in the colelctor electrode and emitter stage of triode VT3
Between resistance R7, positive pole is connected with the ADJ pins of three terminal regulator U, negative pole is connected with the colelctor electrode of triode VT1
Electric capacity C2, and the electric capacity that positive pole is connected with the emitter stage of triode VT3, negative pole is connected with the colelctor electrode of triode VT1
C3 is constituted；The colelctor electrode of the triode VT2 is connected with the colelctor electrode of triode VT1, the base of its emitter stage and triode VT1
Pole is connected；The P poles of the diode D1 are connected with the positive pole of electric capacity C1, and its N pole is connected with the IN pins of three terminal regulator U
Connect；The colelctor electrode of the triode VT3 is connected with the OUT pins of three terminal regulator U；The positive pole of the electric capacity C1 is total to negative pole
With composition power input, the negative pole of the electric capacity C3 collectively constitutes output end with the colelctor electrode of triode VT3.
2. a kind of overload according to claim 1 indicates voltage-stabilized power supply circuit, it is characterised in that：The triode VT1～
VT3 is 3AX51 triodes.
3. a kind of overload according to claim 1 indicates voltage-stabilized power supply circuit, it is characterised in that：The diode D1 is
1N4001 commutation diodes, Zener diode D2 is 2CW75 Zener diodes.
4. a kind of overload according to claim 1 indicates voltage-stabilized power supply circuit, it is characterised in that：The three terminal regulator U
For LM317 voltage-stablizers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621118015.9U CN206164070U (en) | 2016-10-13 | 2016-10-13 | Overload indication constant voltage power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621118015.9U CN206164070U (en) | 2016-10-13 | 2016-10-13 | Overload indication constant voltage power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164070U true CN206164070U (en) | 2017-05-10 |
Family
ID=58653782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621118015.9U Expired - Fee Related CN206164070U (en) | 2016-10-13 | 2016-10-13 | Overload indication constant voltage power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164070U (en) |
-
2016
- 2016-10-13 CN CN201621118015.9U patent/CN206164070U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qin Chengbo Inventor before: Mu Shaoying |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170906 Address after: 523710 Guangdong province Dongguan city Tangxia town Shigu Kau Bridge Road No. 178, D building four floor building Patentee after: Dongguan two-way electronic industry Co., Ltd. Address before: 611230 Sichuan Economic Development Zone, Chongzhou Province Youth (College) Venture Park, building 2, building 5, No., No. 1 Patentee before: Sichuan million energy saving environmental protection technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20201013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |