CN2907026Y - DC power transmission circuit - Google Patents
DC power transmission circuit Download PDFInfo
- Publication number
- CN2907026Y CN2907026Y CN 200620042101 CN200620042101U CN2907026Y CN 2907026 Y CN2907026 Y CN 2907026Y CN 200620042101 CN200620042101 CN 200620042101 CN 200620042101 U CN200620042101 U CN 200620042101U CN 2907026 Y CN2907026 Y CN 2907026Y
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- circuit
- electric capacity
- power supply
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- oxide
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Abstract
The utility model relates to a DC power transmission circuit, which controls the four capacitances through single-chip microcomputer and provides the output end with stable voltage by utilizing sequential switching of the capacitances, and ensures that no electrical connection is arranged between the input end and output end of the circuit at any time, thereby realizing a full isolation between the input and the output. The ON or OFF state between each charging capacitance and the input end as well as the discharging capacitance and the output end are controlled by the photoelectric coupler in the circuit; in the voltage loading comparison circuit of the output end, when the voltage is lower than a certain voltage level, the power supply capacitance is switched by the single-chip microcomputer, e.g. the capacitance in the discharge state is shifted to the charging state, the charging capacitance is shifted to a discharging state.
Description
Technical field
The utility model relates to the direct current energy transmission circuit that a kind of electromagnetism is isolated electromagnetic interference fully, can be serially connected in the path of dc power supply, and the electromagnetic interference of power supply one side is implemented all to isolate, and has improved the load end power supply quality.
Background technology
At present, switching mode voltage stabilizer and DC-DC converter all adopt switching tube as the device of chopping electric current off in input circuit.By the connection of closing, opening Control current, the cut-out of switching tube, realize adjusting to electric energy transmitting.In order to realize the purpose of voltage stabilizing, also have requisite high frequency transformer, the current signal of pulsation is transferred to the secondary loop by primary return, again by sampling feedback to elementary, realize that voltage stabilizing regulates.Like this, in the overall process of electric energy transmitting, there are the electromagnetic coupled passage all the time in power circuit input and output.In the input power supply, interference voltage occurs, especially during burst pulse,, contain very abundant frequency component, still can be coupled to output, the power supply quality of power supply is descended owing to disturb although transfer function has certain frequency to select in the transmission channel.If can cut off the path between power supply and load fully, simultaneously again can be for load provide continuous power supply, that will improve the power supply quality of DC power supply greatly.But the circuit report that such function is not arranged at present as yet.
Summary of the invention
The purpose of this utility model is to obtain simple in structure, the full transmitting DC circuit of isolating of electromagnetism.
For the interference of the blocking dc supply input influence to output, the utility model provides a kind of circuit of novelty.This circuit can be serially connected in the direct current supply path and use, and makes between the load of the DC power supply of input and output not have the electromagnetic coupled passage, has guaranteed under abominable external condition load voltage " totally " all the time.
A kind of transmitting DC circuit that the utility model proposes, this circuit is made up of electric capacity, metal-oxide-semiconductor, photoelectrical coupler, single-chip microcomputer, comparator, voltage stabilizing circuit, wherein, between the input 1 of DC power supply and output 2, four electric capacity 3 are arranged, the electronic switch that the input of each electric capacity and output have metal-oxide-semiconductor to constitute respectively, metal-oxide-semiconductor 4 is that photoelectrical coupler 5 connects single-chip microcomputer 6 by photoelectrical coupler 5 controls, and DC power supply output 2 connects comparator 7, pressurizer 8 successively.
In the utility model, each metal-oxide-semiconductor is controlled by a photoelectrical coupler.
In the utility model, the electronic switch that the input of each electric capacity and output have two metal-oxide-semiconductors to constitute respectively.
In the utility model, single-chip microcomputer 6 is 8051 single-chip microcomputers.
In the utility model, pressurizer 8 is integrated regulators.
Concrete technical scheme of the present utility model can be as follows:
Four what is called " storage " electric capacity that are used for transfer charge in circuit, have been designed.These four electric capacity are responsible for powering load.Input of each " storage " electric capacity and output have two electronic switches that are made of metal-oxide-semiconductor respectively, the connection and the cut-out of control " storage " electric capacity and input power supply or output load.Each metal-oxide-semiconductor is controlled by a photoelectrical coupler.When the photoelectrical coupler input has electric current to flow through, the photoelectrical coupler conducting, thus make the metal-oxide-semiconductor conducting.The input of photoelectrical coupler is by 8051 Single-chip Controlling, when the voltage at load two ends drops to a certain degree, the comparator that detects load voltage produces low level, feed back to interface microcontroller, single-chip microcomputer is exported control signal to photoelectrical coupler, control the conducting and the shutoff of metal-oxide-semiconductor according to this signal, thereby realize the switching of " storage " electric capacity.Specifically, the electric capacity that will discharge switches to charged state exactly, and the electric capacity that is filled with electric charge is switched to power supply state.
The principle of the utility model circuit electromagnetic isolation is: under the control of single-chip microcomputer, the input and the output of " storage " electric capacity can not form path at any time, thereby the interference that guarantees input can't influence load.In order to reach this purpose, and guarantee that each constantly all has the electric capacity powering load, single-chip microcomputer carries out rational sequencing control to metal-oxide-semiconductor.Program in the sequencing control is to make two electric capacity that one cooperative period be arranged when switching, and an electric capacity has an of short duration vacant state between charging and power supply simultaneously, and promptly this electric capacity all disconnects with input, output port and being connected.Described control program these those skilled in the art all can implement.
The principle of the utility model circuit electric energy transmitting is: after powering on, give four " storage " electric capacity chargings.Enter normal operating conditions then.Four power supply electric capacity take turns powering load, specifically: make two electric capacity work earlier, two other charging.After a period of time, the operating state of these two groups of electric capacity is exchanged, circuit is according to the operation that moves in circles of this mechanism.
The beneficial effects of the utility model are that circuit structure is simple, and has realized the full isolation of electromagnetism between DC power supply input and output, avoids the conducted interference from power supply of conventional DC power supply existence, makes power supply and the complete electromagnetic isolation of load, has improved power supply quality.
Description of drawings
Fig. 1 is the structured flowchart of the utility model circuit,
Fig. 2 is the utility model embodiment circuit diagram.
Number in the figure: the 1st, power input, 2 electrogenesis source output terminals, the 3rd, electric capacity, the 4th, metal-oxide-semiconductor, the 5th, photoelectrical coupler, the 6th, single-chip microcomputer, the 7th, comparator, the 8th, voltage stabilizing circuit.
Embodiment
As shown in Figure 2 circuit is connected, then the input port (U22) of this circuit is received the DC power supply two ends, there is the voltage input light-emitting diode (D1) luminous showing.
The output port (U23) of this circuit is received the load two ends, and light-emitting diode (D2) is luminous to be shown voltage output.
7805 integrated stable voltage circuits (U18) will be exported after the stabilized input voltage.Single-pole single-throw switch (SPST) (U21) and electric capacity (C7), resistance (R7) are formed reset circuit, reset in case of necessity 8051 single-chip microcomputers (U20).
A power supply unit of forming with " storage " electric capacity (C1), photoelectrical coupler (U1, U2, U3, U4) and metal-oxide-semiconductor (Q1, Q2, Q3, Q4) is the operation principle of example explanation circuit:
" storage " electric capacity (C1) is in charged state: the P17 pin output high level of 7805 single-chip microcomputers (U20) makes photoelectrical coupler (U1, U3) conducting, thereby makes metal-oxide-semiconductor (Q1, Q3) conducting.The P16 pin output low level of 7805 single-chip microcomputers (U20) is turn-offed photoelectrical coupler (U2, U4) simultaneously, thereby metal-oxide-semiconductor (Q2, Q4) is turn-offed.External voltage is given " storage " electric capacity (C1) charging by input port (U22) like this.
" storage " electric capacity (C1) is in switching state: the P17 pin output low level of 7805 single-chip microcomputers (U20) is turn-offed photoelectrical coupler (U1, U3), thereby metal-oxide-semiconductor (Q1, Q3) is turn-offed.The P16 pin output low level of 7805 single-chip microcomputers (U20) is turn-offed photoelectrical coupler (U2, U4) simultaneously, thereby metal-oxide-semiconductor (Q2, Q4) is turn-offed." storage " electric capacity (C1) is in vacant state like this, prepares to enter power supply state.
" storage " electric capacity (C1) is in power supply state: the P17 pin output low level of 7805 single-chip microcomputers (U20) is turn-offed photoelectrical coupler (U1, U3), thereby metal-oxide-semiconductor (Q1, Q3) is turn-offed.The high level of the P16 pin of 7805 single-chip microcomputers (U20) output simultaneously makes photoelectrical coupler (U2, U4) conducting, thereby makes metal-oxide-semiconductor (Q2, Q4) conducting." storage " electric capacity (C1) just can powering load like this.
Its excess-three power supply unit is all worked in this manner, just some particular moments each power supply unit be in different states.
7805 integrated stable voltage circuits (U19) are exported after with the load voltage voltage stabilizing, as the power supply of operational amplifier (AR1), pass through simultaneously after resistance (R3, the R4) dividing potential drop as with reference to voltage.In addition, conduct is compared voltage after load voltage process resistance (R1, the R2) dividing potential drop.When being compared voltage (when " storage " electric capacity can not provide enough voltage to load) less than reference voltage, high level of operational amplifier (AR1) output, make photoelectrical coupler (U17) conducting, a low level feeds back to the interrupt pin INT0 of 8051 single-chip microcomputers (U20), four " storage " electric capacity of 8051 single-chip microcomputers (U20) control subsequently carry out the switching of state, and proof load obtains continuous voltage and supplies with.
Above-mentioned example circuit diagram is seen Fig. 2, U1, and U2, U3, U4, U5, U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16, U17 are photoelectrical couplers.
U18, U19 are 7805 integrated stable voltage circuits.
U20 is 8051 single-chip microcomputers.
U21 is a single-pole single-throw switch (SPST).
U22 is the input port that this circuit is connected with external circuit.
U23 is the output port that this circuit is connected with external circuit.
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15, Q16 are metal-oxide-semiconductors.
R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17 are resistance.
C1, C2, C3, C4 are " storage " electric capacity.
C5, C6, C7 are electric capacity of the dacron.
C8, C9 are electrochemical capacitors.
D1, D2 are light-emitting diodes.
Y1 is a crystal oscillator.
AR1 is an operational amplifier.
Claims (5)
1, a kind of transmitting DC circuit, this circuit is made up of electric capacity, metal-oxide-semiconductor, photoelectrical coupler, single-chip microcomputer, comparator, voltage stabilizing circuit, it is characterized in that input (1) and export between (2) that four electric capacity (3) are arranged in DC power supply, the electronic switch that the input of each electric capacity and output have metal-oxide-semiconductor to constitute respectively, metal-oxide-semiconductor (4) is photoelectrical coupler (5) control, photoelectrical coupler (5) connects single-chip microcomputer (6), and DC power supply output (2) connects comparator (7), pressurizer (8) successively.
2, transmission circuit as claimed in claim 1 is characterized in that each metal-oxide-semiconductor is a photoelectrical coupler control.
3, transmission circuit as claimed in claim 1 is characterized in that the input of each electric capacity and the electronic switch that output has two metal-oxide-semiconductors to constitute respectively.
4, transmission circuit as claimed in claim 1 is characterized in that single-chip microcomputer (6) is 8051 single-chip microcomputers.
5, transmission circuit as claimed in claim 1 is characterized in that pressurizer (8) is an integrated regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042101 CN2907026Y (en) | 2006-05-25 | 2006-05-25 | DC power transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042101 CN2907026Y (en) | 2006-05-25 | 2006-05-25 | DC power transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2907026Y true CN2907026Y (en) | 2007-05-30 |
Family
ID=38115671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620042101 Expired - Fee Related CN2907026Y (en) | 2006-05-25 | 2006-05-25 | DC power transmission circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2907026Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957300A (en) * | 2011-08-24 | 2013-03-06 | 中国科学院理化技术研究所 | Electromagnetic pump |
-
2006
- 2006-05-25 CN CN 200620042101 patent/CN2907026Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957300A (en) * | 2011-08-24 | 2013-03-06 | 中国科学院理化技术研究所 | Electromagnetic pump |
| CN102957300B (en) * | 2011-08-24 | 2015-08-05 | 中国科学院理化技术研究所 | Electromagnetic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |