CN2785014Y - Multi-purpose switch power supply - Google Patents
Multi-purpose switch power supply Download PDFInfo
- Publication number
- CN2785014Y CN2785014Y CN 200520054583 CN200520054583U CN2785014Y CN 2785014 Y CN2785014 Y CN 2785014Y CN 200520054583 CN200520054583 CN 200520054583 CN 200520054583 U CN200520054583 U CN 200520054583U CN 2785014 Y CN2785014 Y CN 2785014Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- voltage
- resistor
- triode
- 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 - Lifetime
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a multipurpose switching power supply, which comprises an input stage rectifying circuit, a self-oscillation circuit, an output stage voltage stabilizing circuit and a voltage feedback circuit. The utility model is characterized in that in the voltage feedback circuit, a resistor R17, a potentiometer RW and resistors R and R19 are connected in series, resistors R16 and R15 are connected in series, a resistor R18 is connected in series with the negative electrode of a voltage stabilizing pipe 2D2, and the serial connection circuits are connected in parallel to the positive pole and the negative pole of an output voltage; the connection point between the resistor R17 and the potentiometer RW is connected with the base of a triode Q4, and the connection point between the resistor R16 and the resistor R15 and the collector of the triode Q4 are connected with the input stage of a photoelectric coupling IC; the connection point between the resistor R18 and the voltage stabilizing pipe 2D2 is connected with the emitter of the triode Q4, and the output end of the photoelectric coupling IC is connected with the oscillation control input primary stage of the self-oscillation circuit. Because the voltage range of an output voltage stabilizing power supply is great, the utility model has the advantages of flexible combination, high stability, wide purpose, isolation from a mains supply, high safety and low cost.
Description
Technical field
The utility model relates to a kind of multipurpose switch power supply, belongs to field of power supplies.
Background technology
The parallel connection type independent-excited switching power supply that present stage is of the same type on the market mainly is a low-voltage dc power supply, and the output stabilized voltage supply is about 5～12V, and power supply of the same type makes up underaction.
Summary of the invention
The purpose of this utility model provides a kind of parallel connection type self-excitation switching mode voltage stablizer, not only can export low-voltage dc power supply, and can export the constant voltage dc source that reaches 110V～200V, and power supply of the same type can make up connection, can not influence its voltage regulation result.Be various direct current supply electrical works reliably.
The purpose of this utility model is achieved in that a kind of multipurpose switch power supply, comprise the input stage rectification circuit, self-maintained circuit, the output stage mu balanced circuit, voltage feedback circuit, it is characterized in that: in voltage feedback circuit, resistance R 17, potentiometer RW, resistance R, the R19 series connection, resistance R 16 is connected with resistance R 15, resistance R 18 is through the negative electrode series connection of stabilivolt 2D2, these series circuits just all are being attempted by output voltage, the negative pole two ends, resistance R 17, the base stage of the tie point of potentiometer RW and triode Q4 is joined, the input utmost point of the interface of resistance R 16 and resistance R 15 and collector two terminations one photoelectricity of triode Q4 coupling IC, resistance R 18 is joined with the interface of stabilivolt 2D2 and the emitter of triode Q4, the output terminal of photoelectricity coupling IC and vibration control elementary the joining of input of self-maintained circuit.
The utlity model has following advantage: the transformation loss is little, meets environment protecting and power-saving, and output stabilized voltage supply voltage-regulation scope is bigger, combination flexibly and can not influence the stability of power supply, it has the isolation civil power, and is safe in utilization, and low cost of manufacture, have good market outlook.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the circuit diagram of the utility model multipurpose switch power supply.
Fig. 2 is the parallel circuit connection figure of several the utility model multipurpose switch power supplies.
Fig. 3 is the series circuit connection figure of several the utility model multipurpose switch power supplies.
Embodiment
As shown in Figure 1, a kind of multipurpose switch power supply, comprise input stage rectification circuit 1, self-maintained circuit 2, output stage mu balanced circuit 3, voltage feedback circuit 4, it is characterized in that: in voltage feedback circuit 4, resistance R 17, potentiometer RW, resistance R, the R19 series connection, resistance R 16 is connected with resistance R 15, resistance R 18 is through the negative electrode series connection of stabilivolt 2D2, these series circuits just all are being attempted by output voltage, the negative pole two ends, resistance R 17, the base stage of the tie point of potentiometer RW and triode Q4 is joined, the input utmost point of the interface of resistance R 16 and resistance R 15 and collector two terminations one photoelectricity of triode Q4 coupling IC, resistance R 18 is joined with the interface of stabilivolt 2D2 and the emitter of triode Q4, the output terminal of photoelectricity coupling IC and vibration control elementary the joining of input of self-maintained circuit 2.Its oscillatory work principle is as follows:
New one takes turns circulation has begun.Principle of stabilized voltage is: as causing V because of external factor
Out↑ → V
B4Desire rises and V
BeClamper (because of the 2D2 voltage stabilizing) → I
B4↑ → I
C4↑ → optocoupler I
CI
1.2↑ → optocoupler I
CI
34↑ → V
3.4↓ → I
C2↑ → V
B1↑ → I
C1↑ → V
B3↓ → I
C3↓ → V
Out↓, thereby reach the voltage stabilizing purpose.Otherwise in like manner.When practicing, N the multipurpose switch power supply that parameter is identical is as N1, N2 ~ Nn, at their mutual coupling primary dc power supply terminal, same polarity is parallel with one another promptly+and the Bi end interconnects, and the ground end also interconnects, and in secondary output terminal same polarity parallel connection behind rectifying and wave-filtering, its parallel connection is many more, the electric load of being accepted is also big more, in the present embodiment, and as shown in Figure 2, two multipurpose switch power supply N1 are in parallel with N2, and former each output terminal of energy force rate at the output on-load doubles like this; N the multipurpose switch power supply that parameter is identical, as N1, N2～Nn, at their mutual coupling primary dc power supply terminal, same polarity is parallel with one another promptly+the Bi end interconnects, the ground end also interconnects, and secondary behind rectifying and wave-filtering the series connection of output terminal heteropolarity be the positive pole that the negative pole of N1 meets N2, in the present embodiment, as shown in Figure 3, two multipurpose switch power supply N1 connect with N2, form in output like this to double than former each output terminal DC voltage.It is more large-scale circuit conditioning that foregoing circuit connects, if make the output voltage fine setting of circuit, as shown in Figure 3, amplify bias fine-tuning potentiometer Rw (during practical application by triode, be fixed in the front shell, be convenient to people and regulate needed DC voltage) realize, for expanding to the DC voltage range of adjustment, in potentiometer Rw one termination-resistance R (Rw=R), switch of R two ends adjunction (this switch equally fixedly front shell) in actual applications,, on the other end serial connection biasing circuit of R, on the other hand, regulate, reach and to control N direct current same power supplies simultaneously with single potentiometer, must be elementary in connect other the optically-coupled of the C utmost point of sampling amplifier tube, and in the secondary controlled of optically-coupled in the potentiometer of same sample circuit, because of circuit working at high frequency region, need take shielding measure.By combinations thereof, output stabilized voltage supply voltage-regulation scope is bigger, makes up flexibly and can not influence the stability of power supply, because the elementary and secondary of circuit isolates civil power by oscillation transformer, safe in utilization, and low cost of manufacture, good market outlook had.
Claims (1)
1, a kind of multipurpose switch power supply, comprise input stage rectification circuit (1), self-maintained circuit (2), output stage mu balanced circuit (3), voltage feedback circuit (4), it is characterized in that: in voltage feedback circuit (4), resistance R 17, potentiometer RW, resistance R, the R19 series connection, resistance R 16 is connected with resistance R 15, resistance R 18 is through the negative electrode series connection of stabilivolt 2D2, these series circuits just all are being attempted by output voltage, the negative pole two ends, resistance R 17, the base stage of the tie point of potentiometer RW and triode Q4 is joined, the input utmost point of the interface of resistance R 16 and resistance R 15 and collector two terminations one photoelectricity of triode Q4 coupling IC, resistance R 18 is joined with the interface of stabilivolt 2D2 and the emitter of triode Q4, the output terminal of photoelectricity coupling IC and vibration control elementary the joining of input of self-maintained circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054583 CN2785014Y (en) | 2005-02-04 | 2005-02-04 | Multi-purpose switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054583 CN2785014Y (en) | 2005-02-04 | 2005-02-04 | Multi-purpose switch power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2785014Y true CN2785014Y (en) | 2006-05-31 |
Family
ID=36771982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520054583 Expired - Lifetime CN2785014Y (en) | 2005-02-04 | 2005-02-04 | Multi-purpose switch power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2785014Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364220C (en) * | 2005-02-04 | 2008-01-23 | 邹荣生 | Multipurpose switch power supply |
-
2005
- 2005-02-04 CN CN 200520054583 patent/CN2785014Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364220C (en) * | 2005-02-04 | 2008-01-23 | 邹荣生 | Multipurpose switch power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206506286U (en) | A kind of Switching Power Supply current foldback circuit | |
| CN102969915B (en) | A kind of High-power-factor constant current control circuit | |
| CN106786667B (en) | A kind of phase shift frequency modulation mixing control circuit for LLC resonant power | |
| CN103458557A (en) | LED drive control circuit and LED lamp | |
| CN108365765A (en) | A kind of multiple-channel output single-end flyback switching power supply | |
| CN201947513U (en) | Internal memory driving circuit with power factor correction circuit | |
| CN100530923C (en) | Single-phase and triple-phase impedance source booster and step-down DC/DC converter | |
| CN2785014Y (en) | Multi-purpose switch power supply | |
| CN100364220C (en) | Multipurpose switch power supply | |
| CN206727876U (en) | Digital step-down switching power supply device | |
| CN101925217B (en) | LED constant current driving circuit | |
| CN101847937A (en) | Power module | |
| CN106877675A (en) | A kind of normal shock switching power circuit two-tube in parallel of wide range input | |
| CN204906174U (en) | Multi -functional drive plate of wide input full -bridge | |
| CN205544981U (en) | Can realize generating line facilitating equalized conditioning's switching power supply | |
| CN208862748U (en) | A kind of self-oscillation isolation generating positive and negative voltage output translator | |
| CN207053163U (en) | The positive exciting switching voltage regulator output overvoltage protection circuit of high accuracy | |
| CN206962712U (en) | A kind of adjustable DC high voltage power supply | |
| CN104199505B (en) | A kind of Overpower compensating circuit and PFC Overpower compensating circuit structure | |
| CN206389283U (en) | A kind of power circuit of simple low-power high voltage output | |
| CN104467487A (en) | Nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source | |
| CN210113708U (en) | Alternating-current input voltage conversion circuit | |
| CN102270933B (en) | High voltage power circuit with AC input and low-power isolated fixed output | |
| CN208158929U (en) | A kind of Constant-power LED drive circuit based on output signal detection | |
| CN213574761U (en) | Speed regulating circuit of isolation fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080123 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |