CN213213317U - Control circuit with starting current suppression - Google Patents
Control circuit with starting current suppression Download PDFInfo
- Publication number
- CN213213317U CN213213317U CN202021590472.4U CN202021590472U CN213213317U CN 213213317 U CN213213317 U CN 213213317U CN 202021590472 U CN202021590472 U CN 202021590472U CN 213213317 U CN213213317 U CN 213213317U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistor
- capacitor
- diode
- output
- 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.)
- Active
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model belongs to the technical field of the starting current restraines, concretely relates to control circuit with starting current restraines, the technical problem of solution is: the control circuit with high reliability and starting current suppression is provided; the technical scheme is as follows: the utility model provides a control circuit with starting current restraines, includes alternating current power supply, alternating current power supply has connected gradually anti-jamming circuit, leading filter circuit and rectifier circuit, rectifier circuit's output is connected with bleeder circuit's input electricity, bleeder circuit's first output is connected with charging circuit's input electricity, bleeder circuit's second output is connected with back level filter circuit's first input electricity, charging circuit's output is connected with delay drive circuit's input electricity, delay drive circuit's output links with back level filter circuit's second input electricity, back level filter circuit's output is connected with load circuit electricity.
Description
Technical Field
The utility model belongs to the technical field of the starting current restraines, concretely relates to control circuit with starting current restraines.
Background
At present, most of switching power supplies draw a large surge current at the moment of power-up, and the surge current may reach 10-100 times of the static working current of the power supply, so that great instantaneous stress is brought to components in a circuit, and the components are damaged.
Therefore, a control circuit having a high reliability and a start-up current suppression function, which can effectively suppress a surge current, is important.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the deficiencies in the prior art, the technical problem who solves is: provided is a control circuit having high reliability and starting current suppression.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a control circuit with starting current restraines, includes alternating current power supply, alternating current power supply has connected gradually anti-jamming circuit, leading filter circuit and rectifier circuit, rectifier circuit's output is connected with bleeder circuit's input electricity, bleeder circuit's first output is connected with charging circuit's input electricity, bleeder circuit's second output is connected with back level filter circuit's first input electricity, charging circuit's output is connected with delay drive circuit's input electricity, delay drive circuit's output links with back level filter circuit's second input electricity, back level filter circuit's output is connected with load circuit electricity.
Preferably, the voltage dividing circuit includes: the delay driving circuit comprises a diode D1, a resistor R2 and a resistor R3, the charging circuit comprises a resistor R4, a resistor R5 and a capacitor C4, and the delay driving circuit comprises a diode D2, a diode D3, a diode D4, a field effect transistor Q1, a resistor R7, a resistor R8 and a capacitor C5; the anode of the diode D1 is connected to the positive output terminal of the rectifying circuit, the cathode of the diode D1 is connected to the first input terminal of the post-stage filter circuit and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R4 is connected to one end of the resistor R5, one end of the capacitor C4, the cathode of the diode D2 and the cathode of the diode D4, the anode of the diode D4 is connected to the cathode of the diode D3, the gate of the fet Q1 and one end of the capacitor C5, the other end of the resistor R3 is connected to the negative output terminal of the rectifying circuit, the other end of the resistor R5, the other end of the capacitor C4, the anode of the diode D2, the anode of the diode D3, one end of the resistor R7 and the source of the fet 1, and the other end of the resistor R7 is connected to one end of the resistor R8, The drain electrode of the field effect transistor Q1 is connected with the second input end of the post-stage filter circuit, and the other end of the resistor R8 is connected with the other end of the capacitor C5.
Preferably, the anti-jamming circuit comprises a capacitor C1, the pre-filter circuit comprises an inductor L1 and a capacitor C3, and the rectifier circuit comprises a rectifier bridge T1; one end of the capacitor C1 is connected with one end of the inductor L1 and one end of the fuse F1 respectively, the other end of the fuse is connected with the live wire L of the alternating current power supply, the other end of the capacitor C1 is connected with the zero line N of the alternating current power supply, one end of the capacitor C3 and the negative alternating current input end of the rectifier bridge T1 respectively, and the other end of the capacitor C3 is connected with the other end of the inductor L1 and the positive alternating current input end of the rectifier bridge T1 respectively.
Compared with the prior art, the utility model following beneficial effect has:
the utility model relates to a control circuit with starting current suppression, to alternating current power input, can play the effect of anti-interference filtering to whole power supply circuit through anti-interference circuit, reduce the electromagnetic interference in the circuit, leading filter circuit can carry out high frequency filtering to the voltage to rectify the voltage that steps down, filters through rectifier circuit, improved the interference immunity of whole circuit, improved the reliability of whole circuit; simultaneously, in order to avoid the impulse current of last electric initial stage, carry out the partial pressure through bleeder circuit to voltage to delay through delaying drive circuit and switch on power supply circuit, and give the load circuit power supply through back stage filter circuit output power, the utility model discloses both restrained and started impulse current, improved interference immunity again, circuit structure is simple, the range of application is wide.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram of the present invention;
in the figure: the circuit comprises an anti-interference circuit 1, a pre-filter circuit 2, a rectification circuit 3, a voltage division circuit 4, a post-filter circuit 5, a charging circuit 6 and a delay driving circuit 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is the circuit schematic diagram of the utility model discloses a as shown in fig. 1, a control circuit with starting current restraines, including alternating current power supply, alternating current power supply has connected gradually anti-jamming circuit 1, leading filter circuit 2 and rectifier circuit 3, rectifier circuit 3's output is connected with bleeder circuit 4's input electricity, bleeder circuit 4's first output is connected with charging circuit 6's input electricity, bleeder circuit 4's second output is connected with rear filter circuit 5's first input electricity, charging circuit 6's output is connected with delay drive circuit 7's input electricity, delay drive circuit 7's output links with rear filter circuit 5's second input electricity, rear filter circuit 5's output is connected with the load circuit electricity.
The utility model relates to a control circuit with starting current suppression, to alternating current power input, can play the effect of anti-interference filtering to whole power supply circuit through anti-interference circuit, reduce the electromagnetic interference in the circuit, leading filter circuit can carry out high frequency filtering to the voltage to rectify the voltage that steps down, filters through rectifier circuit, improved the interference immunity of whole circuit, improved the reliability of whole circuit; simultaneously, in order to avoid the impulse current of last electric initial stage, carry out the partial pressure through bleeder circuit to voltage to delay through delaying drive circuit and switch on power supply circuit, and give the load circuit power supply through back stage filter circuit output power, the utility model discloses both restrained and started impulse current, improved interference immunity again, circuit structure is simple, the range of application is wide.
Specifically, the voltage dividing circuit 4 includes: the delay driving circuit 6 comprises a diode D1, a resistor R2 and a resistor R3, the charging circuit 6 comprises a resistor R4, a resistor R5 and a capacitor C4, and the delay driving circuit 6 comprises a diode D2, a diode D3, a diode D4, a field effect transistor Q1, a resistor R7, a resistor R8 and a capacitor C5; the anode of the diode D1 is connected to the positive output terminal of the rectifier circuit 3, the cathode of the diode D1 is connected to the first input terminal of the post-filter circuit 5 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R4 is connected to one end of the resistor R5, one end of the capacitor C4, the cathode of the diode D2 and the cathode of the diode D4, the anode of the diode D4 is connected to the cathode of the diode D3, the gate of the fet Q1 and one end of the capacitor C5, the other end of the resistor R3 is connected to the negative output terminal of the rectifier circuit 3, the other end of the resistor R5, the other end of the capacitor C4, the anode of the diode D2, the anode of the diode D3, one end of the resistor R7 and the source of the fet Q1, and the other end of the resistor R7 is connected to one end of the resistor R8, The drain electrode of the field effect transistor Q1 is connected with the second input end of the post-stage filter circuit 5, and the other end of the resistor R8 is connected with the other end of the capacitor C5.
In the utility model, at the initial stage of power-on, after voltage is divided by the voltage dividing circuit 4, the capacitor C4 is charged in the delay driving circuit 6 at first, and at this moment, the field effect transistor Q1 is smaller than the on-state voltage and is in the off-state; when the voltage rises to a certain degree, the diode D4 is broken down, the field effect transistor Q1 is conducted, and the load is normally electrified; the utility model discloses in, can effectively restrain the impulse current of going up the electric initial stage, safe and reliable through delaying drive circuit 6.
Further, the antijamming circuit 1 comprises a capacitor C1, the pre-filter circuit 2 comprises an inductor L1 and a capacitor C3, and the rectifier circuit 3 comprises a rectifier bridge T1; one end of the capacitor C1 is connected with one end of the inductor L1 and one end of the fuse F1 respectively, the other end of the fuse is connected with the live wire L of the alternating current power supply, the other end of the capacitor C1 is connected with the zero line N of the alternating current power supply, one end of the capacitor C3 and the negative alternating current input end of the rectifier bridge T1 respectively, and the other end of the capacitor C3 is connected with the other end of the inductor L1 and the positive alternating current input end of the rectifier bridge T1 respectively; the utility model discloses to alternating current power supply input, can play anti-interference filtering's effect to whole power supply circuit through anti jamming circuit 1, reduce the electromagnetic interference in the circuit, leading filter circuit 2 can carry out high frequency filtering to the voltage to carry out the rectification through rectifier circuit 3 to the voltage after step-down, filtering, improved the interference immunity of whole circuit, further improved the reliability of whole circuit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (3)
1. A control circuit with startup current suppression comprising an ac power source, characterized by: the alternating current power supply is sequentially connected with an anti-jamming circuit (1), a front-end filter circuit (2) and a rectifier circuit (3), the output end of the rectifier circuit (3) is electrically connected with the input end of a voltage division circuit (4), the first output end of the voltage division circuit (4) is electrically connected with the input end of a charging circuit (6), the second output end of the voltage division circuit (4) is electrically connected with the first input end of a rear-stage filter circuit (5), the output end of the charging circuit (6) is electrically connected with the input end of a delay drive circuit (7), the output end of the delay drive circuit (7) is electrically connected with the second input end of the rear-stage filter circuit (5), and the output end of the rear-stage filter circuit (5) is electrically connected with a load circuit.
2. A control circuit with startup current suppression as claimed in claim 1, wherein: the voltage dividing circuit (4) includes: the delay driving circuit comprises a diode D1, a resistor R2 and a resistor R3, the charging circuit (6) comprises a resistor R4, a resistor R5 and a capacitor C4, and the delay driving circuit (7) comprises a diode D2, a diode D3, a diode D4, a field-effect tube Q1, a resistor R7, a resistor R8 and a capacitor C5;
the anode of the diode D1 is connected to the positive output terminal of the rectifier circuit (3), the cathode of the diode D1 is connected to the first input terminal of the post-filter circuit (5) and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R4 is connected to one end of the resistor R5, one end of the capacitor C4, the cathode of the diode D2 and the cathode of the diode D4, the anode of the diode D4 is connected to the cathode of the diode D3, the gate of the fet Q1 and one end of the capacitor C5, the other end of the resistor R3 is connected to the negative output terminal of the rectifier circuit (3), the other end of the resistor R5, the other end of the capacitor C4, the anode of the diode D2, the anode of the diode D3, one end of the resistor R7 and the source of the fet Q1, and the other end of the resistor R7 is connected to one end of the resistor R8, The drain electrode of the field effect transistor Q1 is connected with the second input end of the post-stage filter circuit (5), and the other end of the resistor R8 is connected with the other end of the capacitor C5.
3. A control circuit with startup current suppression as claimed in claim 2, wherein: the anti-jamming circuit (1) comprises a capacitor C1, the pre-filter circuit (2) comprises an inductor L1 and a capacitor C3, and the rectifier circuit (3) comprises a rectifier bridge T1;
one end of the capacitor C1 is connected with one end of the inductor L1 and one end of the fuse F1 respectively, the other end of the fuse is connected with the live wire L of the alternating current power supply, the other end of the capacitor C1 is connected with the zero line N of the alternating current power supply, one end of the capacitor C3 and the negative alternating current input end of the rectifier bridge T1 respectively, and the other end of the capacitor C3 is connected with the other end of the inductor L1 and the positive alternating current input end of the rectifier bridge T1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021590472.4U CN213213317U (en) | 2020-08-04 | 2020-08-04 | Control circuit with starting current suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021590472.4U CN213213317U (en) | 2020-08-04 | 2020-08-04 | Control circuit with starting current suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213213317U true CN213213317U (en) | 2021-05-14 |
Family
ID=75837171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021590472.4U Active CN213213317U (en) | 2020-08-04 | 2020-08-04 | Control circuit with starting current suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213213317U (en) |
-
2020
- 2020-08-04 CN CN202021590472.4U patent/CN213213317U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103533721A (en) | Pulse type current LED drive circuit | |
| CN104345660B (en) | It is remotely controlled start-up circuit | |
| CN103179731A (en) | Light-emitting diode (LED) driving circuit and LED lamp | |
| CN203660880U (en) | Two-stage boost topological circuit | |
| CN202655123U (en) | High-voltage power supply of flexile and stable electrostatic dust collector | |
| CN212163157U (en) | Driving circuit of startup input surge current prevention relay | |
| CN213213317U (en) | Control circuit with starting current suppression | |
| CN202906730U (en) | Self-switching-on-off starting control circuit used for LED flyback driving power supply | |
| CN104868708A (en) | Power-on buffering and bus discharge circuit for frequency converter | |
| CN105576840A (en) | Self-induction electricity taking circuit for smart power grid sensing device | |
| CN209329979U (en) | A kind of high-power AC-DC constant-current power supply circuit of air-cooled radar transmitter and power supply device | |
| CN107634669B (en) | Power supply circuit of permanent magnet synchronous motor without position sensor and control method thereof | |
| CN107666305B (en) | Intelligent switch | |
| CN103647469B (en) | A kind of power supply of three-level inverter Switching Power Supply and protective circuit | |
| CN209571821U (en) | A kind of inrush current suppression circuit | |
| CN207460021U (en) | The power circuit of position-sensor-free permanent magnet synchronous motor | |
| CN109256967B (en) | Constant voltage power supply circuit for stable power output during starting | |
| CN209001855U (en) | The constant voltage power supply circuit that power stability exports when a kind of starting | |
| CN203027158U (en) | Circuit for improving rectifier bridge pile conduction angle | |
| CN106877696A (en) | Based on TOPSwitch-GX Switching Power Supplies | |
| CN105896957A (en) | High-efficiency single-phase active power factor correction circuit | |
| CN205725446U (en) | A kind of high efficiency single-phase APFC | |
| CN210780081U (en) | Switching power supply overvoltage protection circuit and switching power supply | |
| CN219247712U (en) | Low-power-consumption capacitor voltage-reducing circuit | |
| CN212518387U (en) | Protection circuit of capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |