CN203617903U - Portable direct-current source - Google Patents
Portable direct-current source Download PDFInfo
- Publication number
- CN203617903U CN203617903U CN201320646499.4U CN201320646499U CN203617903U CN 203617903 U CN203617903 U CN 203617903U CN 201320646499 U CN201320646499 U CN 201320646499U CN 203617903 U CN203617903 U CN 203617903U
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- Prior art keywords
- pin
- resistance
- electric capacity
- filtering
- shell
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- 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.)
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- 241000234295 Musa Species 0.000 claims abstract description 26
- 235000018290 Musa x paradisiaca Nutrition 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 8
- 241000270722 Crocodylidae Species 0.000 claims description 6
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 241001125929 Trisopterus luscus Species 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 3
- 241000270728 Alligator Species 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a portable direct-current source, which includes: a shell and a power supply wire. The shell is made from a PVC wire slot, and a battery box is fixed and installed on one end of the shell through two mounting holes which are opened on a bottom of the PVC wire slot and a flat head screw, two mounting through-holes are opended on the other end of the shell through an upper side and a lower side of the PVC wire slot, and two banana jacks out from the two mounting through-holes achieve the object of fixation through threaded bore pillars thereof to respectively be sleeved into electrodes and then to tighten nuts. The positive and negative wires drawn from the battery box are welded with a power input end of a DC-DC boost circuit board, and the positive and negative wires drawn from a power output end of the DC-DC boost circuit board are respectively welded with the electrodes of a first banana jack and a second banana jack. The power supply wire adopted by red and black double-color wires, two ends of the red and black double-color wires are respectively connected to banana jack and an alligator clip with the same color of the red and black double-color wires. The portable direct-current source has the advantages of simple structure, need not AC rectifying step-down circuit, and is a direct current experiment source with high security and high operability.
Description
Technical field
The utility model relates to teaching experiment system, and particularly a kind of walk away safety has the Portable DC mains of higher operability.
Background technology
Power technology is important branch of modern power electronics technology, wherein DC power supply device is one of necessary equipment of Experiments of Electricity chamber and electronic production, but most of power-supply devices are alternating current step-down rectifier gained, equipment price is higher, designing a kind of Portable DC mains based on this present situation, is very necessary for meeting the basic demand of electronic production.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to carry walk away safety, has the Portable DC mains of higher operability.
The utility model solves the technical scheme that its technical problem adopts: it comprises: shell and power lead; Described shell adopts PVC wire casing to make, one end in the enclosure, the installing hole that is 2mm by two diameters opening in PVC wire casing bottom surface and flat head screw fixed installation battery case, the other end opens by PVC wire casing upper and lower surface the installation through hole that two diameters are 5mm, and passing the first banana bin, the second banana bin in two described installation through holes, the first banana bin, the second banana bin reach fixing object by tightening nuts be inserted in electrode respectively on its screwed hole post after; The welding of power input on the both positive and negative polarity wire that described battery case is drawn and DC-DC booster circuit plate, the output of DC-DC booster circuit plate draw wire respectively with the first banana bin, the second banana bin on electrode welding; Described power lead adopts red-black double-colored wire, and the two ends of red-black double-colored wire connect respectively the banana plug homochromy with wire, crocodile clip.Described power lead adopts red-black double-colored wire, and the two ends of red-black double-colored wire connect respectively the banana plug homochromy with wire, crocodile clip.
Useful technique effect of the present utility model: utilize battery case and DC-DC booster circuit plate to realize DC power supply, it is simple in structure, without AC rectification reduction voltage circuit, has fail safe, the direct current experimental power supply that operability is high.In the time putting into 3V lithium battery in battery case, can be by exporting 5V DC power supply voltage on the crocodile clip of power lead after DC-DC booster circuit plate boosts.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the new middle DC-DC booster circuit plate circuit diagram of this practicality.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
With reference to Fig. 1, the utility model comprises shell 1 and power lead 2; Shell 1 adopts PVC wire casing to make, in the interior one end of shell 1, the installing hole that is 2mm by two diameters opening in PVC wire casing bottom surface and flat head screw fixed installation battery case 3, the other end opens by PVC wire casing upper and lower surface the installation through hole that two diameters are 5mm, and install in through hole and pass the first banana bin C, the second banana bin D from two, the first banana bin C, the second banana bin D reach fixing object by be inserted in respectively the rear tightening nuts of electrode 6 on its screwed hole post 5; The welding of power input on the both positive and negative polarity wire that battery case 3 is drawn and DC-DC booster circuit plate 4, the output of DC-DC booster circuit plate 4 draw wire respectively with the first banana bin (C), the second banana bin D on electrode 6 weld; Power lead 2 adopts red-black double-colored wire, and the two ends of red-black double-colored wire connect respectively the banana plug homochromy with wire 7, crocodile clip 8.It is 40mm*20mm that PVC wire casing is selected cross-sectional area, and length is the long wire casing of 15cm.Electrode 6 front ends upwards bend with nipper pliers, and on front end tin, convenient both positive and negative polarity wire bonds of drawing with battery case 3.
With reference to Fig. 2, DC-DC booster circuit plate 4 is made up of pre-filtering unit, partial pressure unit, soft start unit, inversion unit, output filtering unit and output indicating member; Pre-filtering unit comprises and after input DC power and capacitor C 4 and capacitor C 5 are connected in parallel, forms feeder ear A after filtering, ground connection after capacitor C 4 is connected with capacitor C 5 negative pole pin; Partial pressure unit comprises after filtering that feeder ear A and resistance R 1, resistance R 2 are connected in series rear ground connection; Soft start unit comprises after filtering that feeder ear A and capacitor C 2, resistance R 5 are connected in series rear ground connection; Inversion unit comprises the DC-DC chip U1 that boosts, and boost clk/sel pin, the ain pin of chip U1 of DC-DC is all electrically connected with feeder ear A after filtering, ground connection after ref pin is connected with capacitor C 3, and on pin is connected between the capacitor C 2 and resistance R 6 of soft start unit; Pokin pin is connected between the resistance R 1 and resistance R 2 of partial pressure unit; The boost lxn pin of chip U1 of DC-DC is connected Hou Yi road and is connected with energy storage inductor L1 one end with lxp pin, the energy storage inductor L1 other end is connected to after filtering between feeder ear A, green LED LED; Another road is connected with the anodal pin of diode D1, and diode D1 negative pole pin and resistance R 3, capacitor C 1 are connected in series rear ground connection; The boost out pin of chip U1 of DC-DC is connected between resistance R 3 and capacitor C 1, and pout pin is connected between diode D1 and resistance R 3, forms the voltage output end B after boosting; Output filtering unit comprise voltage output end B be connected in parallel with capacitor C 6, capacitor C 7 respectively after ground connection, output indicating member comprise that voltage output end B and green LED LED, resistance R 4 are connected in series rear ground connection; DC-DC boosts, and can to adopt model be the MAX1703 chip that boosts to chip U1.
Utilize battery case and DC-DC booster circuit plate to realize DC power supply, it is simple in structure, without AC rectification reduction voltage circuit, has fail safe, the direct current experimental power supply that operability is high.In the time putting into 3V lithium battery in battery case, can be by exporting 5V DC power supply voltage on the crocodile clip of power lead after DC-DC booster circuit plate boosts.
Claims (4)
1. Portable DC mains, is characterized in that it comprises: shell (1) and power lead (2), described shell (1) adopts PVC wire casing to make, one end in shell (1), the installing hole that is 2mm by two diameters opening in PVC wire casing bottom surface and flat head screw fixed installation battery case (3), the other end opens by PVC wire casing upper and lower surface the installation through hole that two diameters are 5mm, and pass the first banana bin (C) in two described installation through holes, the second banana bin (D), the first banana bin (C), the second banana bin (D) reaches fixing object by tightening nuts be inserted in respectively electrode (6) on its screwed hole post (5) after, the welding of power input on both positive and negative polarity wire and DC-DC booster circuit plate (4) that described battery case (3) is drawn, the output of DC-DC booster circuit plate (4) draw wire respectively with the first banana bin (C), the second banana bin (D) on electrode (6) welding, described power lead (2) adopts red-black double-colored wire, and the two ends of red-black double-colored wire connect respectively the banana plug homochromy with wire (7), crocodile clip (8).
2. Portable DC mains according to claim 1, is characterized in that: described DC-DC booster circuit plate (4) is made up of pre-filtering unit, partial pressure unit, soft start unit, inversion unit, output filtering unit and output indicating member; Described pre-filtering unit comprises and after input DC power and electric capacity (C4) and electric capacity (C5) are connected in parallel, forms feeder ear A after filtering, ground connection after electric capacity (C4) is connected with electric capacity (C5) negative pole pin; Described partial pressure unit comprises after filtering that feeder ear A and resistance (R1), resistance (R2) are connected in series rear ground connection; Described soft start unit comprises after filtering that feeder ear A and electric capacity (C2), resistance (R5) are connected in series rear ground connection; Described inversion unit comprises the DC-DC chip (U1) that boosts, boost clk/sel pin, the ain pin of chip (U1) of DC-DC is all electrically connected with feeder ear A after filtering, ground connection after ref pin is connected with electric capacity (C3), on pin is connected between the electric capacity (C2) and resistance (R6) of soft start unit; Pokin pin is connected between the resistance (R1) and resistance (R2) of partial pressure unit; The boost lxn pin of chip (U1) of DC-DC is connected Hou Yi road and is connected with energy storage inductor (L1) one end with lxp pin, energy storage inductor (L1) other end is connected between feeder ear A after filtering, green LED (LED); Another road is connected with the anodal pin of diode (D1), and diode (D1) negative pole pin and resistance (R3), electric capacity (C1) are connected in series rear ground connection; The boost out pin of chip (U1) of DC-DC is connected between resistance (R3) and electric capacity (C1), pout pin is connected between diode (D1) and resistance (R3), forms the voltage output end B after boosting; Described output filtering unit comprise voltage output end B be connected in parallel with electric capacity (C6), electric capacity (C7) respectively after ground connection, described output indicating member comprises that voltage output end B and green LED (LED), resistance (R4) are connected in series rear ground connection; Described DC-DC boosts, and can to adopt model be the MAX1703 chip that boosts to chip (U1).
3. Portable DC mains according to claim 1, is characterized in that: it is 40mm*20mm that described PVC wire casing is selected cross-sectional area, and length is the long wire casing of 15cm.
4. Portable DC mains according to claim 1, is characterized in that: described electrode (6) front end nipper pliers upwards bends, and on front end tin, convenient both positive and negative polarity wire bonds of drawing with battery case (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646499.4U CN203617903U (en) | 2013-10-21 | 2013-10-21 | Portable direct-current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646499.4U CN203617903U (en) | 2013-10-21 | 2013-10-21 | Portable direct-current source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203617903U true CN203617903U (en) | 2014-05-28 |
Family
ID=50770522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320646499.4U Expired - Fee Related CN203617903U (en) | 2013-10-21 | 2013-10-21 | Portable direct-current source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203617903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425516A (en) * | 2017-09-11 | 2017-12-01 | 贵州电网有限责任公司 | One kind energy-conservation direct current distribution network system |
-
2013
- 2013-10-21 CN CN201320646499.4U patent/CN203617903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425516A (en) * | 2017-09-11 | 2017-12-01 | 贵州电网有限责任公司 | One kind energy-conservation direct current distribution network system |
| CN107425516B (en) * | 2017-09-11 | 2023-11-28 | 贵州电网有限责任公司 | Energy-saving direct-current power distribution network system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140528 Termination date: 20181021 |