CN209329981U - A kind of rectification circuit with detection circuit - Google Patents
A kind of rectification circuit with detection circuit Download PDFInfo
- Publication number
- CN209329981U CN209329981U CN201920384078.6U CN201920384078U CN209329981U CN 209329981 U CN209329981 U CN 209329981U CN 201920384078 U CN201920384078 U CN 201920384078U CN 209329981 U CN209329981 U CN 209329981U
- Authority
- CN
- China
- Prior art keywords
- circuit
- rectification
- detection circuit
- detection
- output end
- 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
Landscapes
- Rectifiers (AREA)
Abstract
The utility model is a kind of rectification circuit with detection circuit, it includes rectifier circuit and detection circuit, rectifier circuit includes transformer and there are four the rectification circuits of diode composition, the output end of transformer is connected to the ac input end of rectification circuit, the cathode output end of rectification circuit is equipped with filter capacitor, is additionally provided with capacitor on the circuit between the electrode input end and transformer of rectification circuit；The circuit for being connected to rectification circuit output end cathode is additionally provided on the negative input of rectification circuit, which is equipped with detection circuit.Corresponding detection circuit is set on full-wave bridge rectifier circuit, sample detecting is carried out to the input terminal of circuit, and then control circuit, switches over it between full-wave bridge and voltage doubling rectifing circuit, to guarantee the stability of output end voltage.
Description
Technical field
The utility model relates to arrive rectification circuit, specifically a kind of rectification circuit with detection circuit.
Background technique
Rectification circuit is the circuit that alternating current can be converted to direct current energy, most of rectified current routing transformers, rectification
The composition such as main circuit, filter, it is obtained in fields such as the speed regulation of dc motor, the adjustment of field excitation of generator, electrolysis, plating
It is widely applied.
Rectification circuit is divided into halfwave rectifier, full-wave rectification, full-wave bridge rectifier, four kinds of voltage multiplying rectifier again, wherein full-wave bridge
Formula rectification and voltage multiplying rectifier are most commonly seen two kinds, and current full-wave bridge rectifier circuit generally only can be for a kind of specification
Voltage works, and when input voltage is lower than setting value, the voltage of output end is also decreased, and influences whether output end at this time
Service condition.
Summary of the invention
The utility model is a kind of rectification circuit with detection circuit, it is arranged accordingly on full-wave bridge rectifier circuit
Detection circuit, sample detecting is carried out to the input terminal of circuit, and then control circuit, make it in full-wave bridge and
It is switched between voltage doubling rectifing circuit, to guarantee the stability of output end voltage.
The utility model realizes that above-mentioned purpose uses following technical scheme:
A kind of rectification circuit with detection circuit, it includes rectifier circuit and detection circuit.
The rectifier circuit include transformer and there are four diode composition rectification circuit, the transformer it is defeated
Outlet is connected to the ac input end of rectification circuit, and the cathode output end of rectification circuit is equipped with filter capacitor, rectification circuit
Capacitor is additionally provided on circuit between electrode input end and transformer；The company of being additionally provided on the negative input of the rectification circuit
It is connected to the circuit of rectification circuit output end cathode, which is equipped with detection circuit.
The detection circuit includes relay, and the relay is connected to the circuit of rectification circuit cathode output end
On, two concatenated triodes and sampling zener diode are additionally provided in detection circuit, detection circuit is equipped with sampling end；Sampling
End is sampled detection to the whole input voltage of circuit.
Current-limiting resistance is additionally provided in the detection circuit.
The utility model has the advantages that by adopting the above technical scheme
It by the setting of detection circuit, cut rectification circuit can between bridge full-wave rectifier and voltage doubling rectifing circuit
Change, allow this circuit be directed to different voltage carry out using, for arrive different input terminal voltages when, this rectification circuit
It can guarantee the stability of output end voltage.
Detailed description of the invention
The schematic diagram of the position Fig. 1 the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
A kind of rectification circuit with detection circuit, it includes rectification circuit and detection circuit.
The rectification circuit include transformer and there are four diode composition rectifier circuit, the transformer it is defeated
Outlet is connected to the ac input end of rectification circuit, and the cathode output end of rectifier circuit is equipped with filter capacitor, rectifier bridge electricity
Capacitor is additionally provided on circuit between the electrode input end and transformer on road；On the negative input of the rectifier circuit also
Equipped with the circuit for being connected to rectifier circuit negative pole of output end, which is equipped with detection circuit.
The detection circuit includes relay, and the relay is connected to the circuit of rectifier circuit cathode output end
On, two concatenated triodes and sampling zener diode are additionally provided in detection circuit, detection circuit is equipped with sampling end.
Current-limiting resistance is additionally provided in the detection circuit.
As shown in Figure 1, T1 is transformer, four diodes are respectively D1, D2, D3, D4, and four diodes form rectifier bridge
Circuit is additionally provided with capacitor C1 in the inlet circuit between the electrode input end of rectifier circuit, i.e. D1 and D3, capacitor C1's
Main function is four diode composition voltage doubling rectifing circuits of cooperation.
Filter capacitor C3 is additionally provided on the cathode output end of rectifier circuit.
It is additionally provided with the circuit for being connected to rectifier circuit negative pole of output end between the diode D2 and D4 of rectifier circuit, the electricity
Road is equipped with relay, and relay includes coil T2 and switch K1, and switch K1 controls the opening and closing of the circuit, relay
Input terminal B1 is test side, which is sampling end again, is sampled detection to the whole input voltage of circuit, B1 is connected to
The output end of transformer T1 detects the output end voltage of transformer T1, be also connected on the input terminal of relay there are two
Triode Q1 and Q2, sampling zener diode D5 and current-limiting resistance R1.
The working principle of this circuit is as follows:
The setting value of sampling zener diode D5 is such as set as 80V, when the voltage of test side B1 is higher than 80V, D5 is connected,
Triode Q1 is connected at this time, and the conducting of triode Q1 closes the turn-on condition of triode Q2, and Q2 is not turned at this time, then coil T2
Middle no current, therefore K1 is disconnected, at this point, the circuit is full-wave bridge rectifier circuit.
When the voltage detected such as test side B1 is lower than 80V, D5 is not turned on, and Q1 is not turned at this time, because Q2 has forward bias,
It is with turn-on condition, therefore Q2 is connected, and has electric current to pass through in coil T2 at this time, and K2 is closed at this time, and entire rectification circuit is formed again
Press the form of finishing circuit.
Embodiment provided above only with the utility model is illustrated for convenience, in technical solution model described in the utility model
Farmland, person of ordinary skill in the field make various simple deformations and modification, should be included in the above claim.
Claims (3)
1. a kind of rectification circuit with detection circuit, it includes rectifier circuit and detection circuit, it is characterised in that: described
Rectifier circuit includes transformer and there are four the rectification circuit of diode composition, and the output end of the transformer is connected to rectification
The cathode output end of the ac input end of circuit, rectification circuit is equipped with filter capacitor, the electrode input end of rectification circuit and change
Capacitor is additionally provided on circuit between depressor；It is additionally provided with that be connected to rectification circuit defeated on the negative input of the rectification circuit
The circuit of outlet cathode, the circuit are equipped with detection circuit.
2. a kind of rectification circuit with detection circuit according to claim 1, it is characterised in that: the detection circuit
Including relay, the relay is connected on the circuit of rectification circuit cathode output end, and two are additionally provided in detection circuit
Concatenated triode and sampling zener diode；Detection circuit is equipped with sampling end, whole input voltage of the sampling end to circuit
It is sampled detection.
3. a kind of rectification circuit with detection circuit according to claim 1, it is characterised in that: the detection circuit
On be additionally provided with current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920384078.6U CN209329981U (en) | 2019-03-25 | 2019-03-25 | A kind of rectification circuit with detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920384078.6U CN209329981U (en) | 2019-03-25 | 2019-03-25 | A kind of rectification circuit with detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209329981U true CN209329981U (en) | 2019-08-30 |
Family
ID=67733125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920384078.6U Active CN209329981U (en) | 2019-03-25 | 2019-03-25 | A kind of rectification circuit with detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209329981U (en) |
-
2019
- 2019-03-25 CN CN201920384078.6U patent/CN209329981U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102356537B (en) | PFC converter | |
| CN202025037U (en) | Zero crossing detecting circuit | |
| CN107276388A (en) | Pfc circuit and transducer air conditioning | |
| CN206447440U (en) | Elevator internal contracting brake control device | |
| CN107834855A (en) | Switching power unit | |
| CN106301031A (en) | Integrated circuit and switching power unit | |
| CN104518693A (en) | Current resonance type power supply device | |
| CN107271756A (en) | Current zero-crossing point detects circuit and method, load voltage detection circuit and method | |
| CN109314398A (en) | Battery charger | |
| CN102253335A (en) | Detection circuit used for turning off thyristor | |
| CN110308315A (en) | A kind of current transformer sample circuit | |
| CN109314472A (en) | Device for improving power factor | |
| CN110456263A (en) | A kind of relay is adhered detection circuit, device and its detection method | |
| CN110429837A (en) | Wide scope input and output AC-DC converter | |
| CN209664538U (en) | A kind of manual welding, argon arc welding and plasma cut three use main loop circuit | |
| CN208112509U (en) | A kind of twin-stage input step-up DC constant voltage output converter | |
| CN209329981U (en) | A kind of rectification circuit with detection circuit | |
| CN106300925A (en) | Driving control circuit, method and the system thereof of AC DC circuit | |
| CN102474184B (en) | For controlling the Method and circuits of the boost converter in circuit of power factor correction | |
| CN209389697U (en) | A kind of pair side control circuit and its isolated power converting circuit | |
| CN104411035A (en) | LED drive circuit without auxiliary winding for power supply | |
| CN111044772A (en) | Current sampling circuit and control method | |
| CN101154814A (en) | Electric energy feedback type reactive-load self-compensation method and apparatus | |
| CN107666305B (en) | Intelligent switch | |
| CN104467490B (en) | The automatic switch-over circuit of voltage multiplying rectifier and halfwave rectifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |