CN209313725U - Cross adjustment rate circuit and electronic equipment - Google Patents
Cross adjustment rate circuit and electronic equipment Download PDFInfo
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- CN209313725U CN209313725U CN201920206486.2U CN201920206486U CN209313725U CN 209313725 U CN209313725 U CN 209313725U CN 201920206486 U CN201920206486 U CN 201920206486U CN 209313725 U CN209313725 U CN 209313725U
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Abstract
The utility model discloses a cross adjustment rate circuit and electronic equipment. The circuit includes: the switching power supply module and the voltage stabilizing module; the voltage stabilization module includes: a voltage stabilizing unit and a diode unit; the output end of the switching power supply module is connected with the first end of the diode unit, the second end of the diode unit is connected with the first end of the voltage stabilizing unit, and the second end of the voltage stabilizing unit is connected with the input end of the switching power supply module; the negative temperature coefficient of the diode unit and the positive temperature coefficient of the voltage stabilizing unit form complementation, so that the output voltage value of the voltage stabilizing module reaches a stable state when the temperature changes. The utility model provides an among the prior art because of zener diode's steady voltage value changes along with temperature variation, the output voltage that leads to switching power supply module is high unstable problem, has realized the technological effect of switching power supply module output steady voltage value.
Description
Technical field
The utility model embodiment is related to power technology more particularly to a kind of cross regulation rate circuit and electronic equipment.
Background technique
It is general that multiple-channel output formula structure is realized using a transformer under cross regulation rate scene of less demanding.It is logical
In normal situation, due to the influence of Switching Power Supply cross regulation rate, in multi-output power supply due to the change of an output loading and
Cause the change of other output voltages.For example, the output voltage of usually 24V can reach 30V at light load.
In order to guarantee the stability of output voltage, usually output voltage is carried out by zener diode in the prior art steady
It is fixed, but since zener diode has positive temperature coefficient, corresponding pressure stabilizing value can change with temperature change, cause
There is deviation in the corresponding pressure stabilizing value of zener diode, the high unstable problem so that the output voltage for Switching Power Supply occur floats.
Utility model content
In view of this, the present invention provides a kind of cross regulation rate circuit and electronic equipments, solve in the prior art
It changes because the pressure stabilizing value of zener diode is with temperature change, causes the output voltage of switch power module to float high unstable
Fixed problem.
In a first aspect, the utility model embodiment provides a kind of cross regulation rate circuit, comprising: switch power module and
Voltage stabilizing module；The Voltage stabilizing module includes: voltage regulation unit and diode；
The output end of the switch power module is connect with the first end of the diode, the diode
Second end is connect with the first end of the voltage regulation unit, the input of the second end of the voltage regulation unit and the switch power module
End connection；
The negative temperature coefficient of the diode formed with the positive temperature coefficient of the voltage regulation unit it is complementary so that described
The output voltage values of Voltage stabilizing module reach stable state in temperature change.
Further, the diode is first diode；The voltage regulation unit includes: zener diode, first
Triode and the second triode；
The anode of the first diode is connect with the output end of the switch power module；The zener diode is born
Pole is connect with the cathode of the first diode, and the anode of the zener diode is connect with the base stage of first triode,
The collector of first triode is connect with the base stage of second triode, the emitter of second triode with it is described
The input terminal of switch power module connects, and the collector of second triode and the output end of the switch power module connect
It connects, the emitter ground connection of first triode.
Further, the voltage regulation unit further include: first resistor, second resistance and first capacitor；
One end of the first resistor is connect with the anode of the zener diode, the other end difference of the first resistor
It is connect with the base stage of one end of the second resistance, one end of the first capacitor and first triode, described second
The other end of resistance and the other end of the first capacitor are grounded.
Further, the voltage regulation unit further include: 3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance；
One end of the 3rd resistor is connect with the collector of the first triode, the other end of the 3rd resistor respectively with
The connection of one end of two or three extreme base stage and the 4th resistance；
The other end of 4th resistance respectively with the emitter of second triode and the 5th resistance one
End connection；
The other end of 5th resistance is connect with the input terminal of the switch power module；
One end of 6th resistance is connect with the collector of second triode, the other end of the 6th resistance with
The output end of the switch power module connects.
Further, the switch power module includes: signal input unit and control unit；
The first end of described control unit is connect with the first end of the signal input unit, and the second of described control unit
End is connect with the 5th resistance, and the third end of described control unit is connect with the 6th resistance.
Further, described control unit, comprising: the first transistor, the second diode and the second capacitor；
The first end of the first transistor is connect with the other end of the 5th resistance and power input respectively, institute
The second end for stating the first transistor is electric with the cathode of second diode, the other end of the 6th resistance and second respectively
One end of appearance connects；The third end of the first transistor is connect with the other end of the second capacitor and power output end respectively；
The anode of second diode is connect with the first end of the signal input unit.
Further, described control unit, further includes: third capacitor, the 7th resistance, the 8th resistance and the 9th resistance；
One end of the third capacitor, one end of the 7th resistance, the 8th resistance one end with the first transistor
First end connection；The other end of third capacitor, the 8th resistance the other end connect with one end of the 9th resistance；Institute
The other end of the other end, the 9th resistance of stating the 7th resistance is connect with the anode of second diode.
Further, the signal input unit, comprising: third transistor and third diode；
The base stage of the third transistor is connect with the signal input part, the collector of the third transistor with it is described
The cathode of third diode connects, the emitter ground connection of the third transistor, the anode of the third diode and the control
The first end of unit processed connects.
Further, the signal input unit, further includes: the 4th capacitor, the 5th capacitor, the tenth resistance and the 11st electricity
Resistance；
One end of 4th capacitor respectively with the base stage of the third transistor, one end of the tenth resistance and institute
State one end connection of eleventh resistor；The other end of one end of 5th capacitor and eleventh resistor is and signal input part
Connection；The other end, the other end of the 5th capacitor and the other end of the tenth resistance of 4th capacitor are grounded.
Second aspect, the utility model embodiment provide a kind of electronic equipment, and the electronic equipment includes such as first party
Cross regulation rate circuit described in face.
Above-mentioned utility model embodiment is connected by the output end of switch power module and the first end of diode, and two
The second end of pole pipe unit and the first end of voltage regulation unit connect, the second end of voltage regulation unit and the input terminal of switch power module
Connection；The negative temperature coefficient of diode formed with the positive temperature coefficient of voltage regulation unit it is complementary so that the output of Voltage stabilizing module
Voltage value reaches stable state in temperature change.The utility model passes through the increased diode list with negative temperature coefficient
Member, formed with the positive temperature coefficient of voltage regulation unit it is complementary, when the temperature varies, so that at the output voltage values of Voltage stabilizing module
In stable state, solves and change in the prior art because the pressure stabilizing value of zener diode is with temperature change, cause out
The output voltage of powered-down source module floats high unstable problem, realizes the technology effect of switch power module output stable voltage
Fruit.
Detailed description of the invention
Fig. 1 is the structural block diagram of cross regulation rate circuit provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of another cross regulation rate circuit provided by the utility model；
Fig. 3 is the structural schematic diagram of another cross regulation rate circuit provided by the utility model；
Fig. 4 is a kind of circuit diagram of cross regulation rate circuit provided by the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
Fig. 1 is the structural block diagram of cross regulation rate circuit provided by the embodiment of the utility model, and the present embodiment is applicable to
The case where keeping Voltage stabilizing module institute output voltage to reach stable state, which may be disposed in electronic equipment.
With reference to Fig. 1, which includes: switch power module 110 and Voltage stabilizing module 120.
Wherein, Voltage stabilizing module 120 includes: voltage regulation unit 1201 and diode 1202.
The output end of switch power module 110 is connect with the first end of diode 1202, diode 1202
Second end is connect with the first end of voltage regulation unit 1201, the second end of voltage regulation unit 1201 and the input of switch power module 110
End connection；The negative temperature coefficient of diode 1202 formed with the positive temperature coefficient of voltage regulation unit 1201 it is complementary so that pressure stabilizing
The output voltage values of module 120 reach stable state in temperature change.
In embodiment, after receiving switching signal, the switch power module 110 in cross regulation rate circuit starts defeated
Voltage out, with the growth of cross regulation rate circuit power-on time, intersects so that corresponding electronic equipment is worked normally
The temperature of regulation circuit can increase.Since voltage regulation unit 1201 has positive temperature coefficient, output voltage values can be with temperature
Increase and increases.In order to avoid the output voltage values of voltage regulation unit 1201 increase, in turn results in switch power module 110 and exported
Voltage value is unstable, increases diode 1202 in Voltage stabilizing module 120, and the diode 1202 has negative temperature
Coefficient, when the temperature increases, voltage drop value corresponding to diode 1202 can be reduced as temperature increases；Correspondingly, working as
When temperature reduces, voltage drop value corresponding to diode 1202 can be reduced with temperature and be increased, while 1201 institute of voltage regulation unit
Corresponding output voltage values can be reduced as temperature reduces, so that 1201 groups of diode 1202 and voltage regulation unit
At Voltage stabilizing module 120 corresponding to output voltage values be maintained at stable state so that switch power module 110 is exported
Voltage value keep stablize.
The embodiments of the present invention are connected by the output end of switch power module and the first end of diode,
The second end of diode and the first end of voltage regulation unit connect, the second end of voltage regulation unit and the input of switch power module
End connection；The negative temperature coefficient of diode formed with the positive temperature coefficient of voltage regulation unit it is complementary so that Voltage stabilizing module is in temperature
Burning voltage is exported when degree variation.The utility model is by the increased diode with negative temperature coefficient, with pressure stabilizing list
The positive temperature coefficient of member forms complementation, when the temperature varies, so that the voltage that Voltage stabilizing module is exported is constantly in stabilization
State solves and changes in the prior art because the pressure stabilizing value of zener diode is with temperature change, leads to Switching Power Supply
The output voltage of module floats high unstable problem, realizes the technical effect of switch power module output stable voltage.
Fig. 2 is the structural schematic diagram of another cross regulation rate circuit provided by the utility model.The present embodiment is upper
On the basis of stating embodiment, diode and voltage regulation unit are further embodied.
With reference to Fig. 2, the diode 1202 in cross regulation rate circuit is first diode D1；Voltage regulation unit 1201 wraps
It includes: zener diode ZD1, the first triode Q1 and the second triode Q2.
Wherein, the anode of first diode D1 is connect with the output end of switch power module 110；Zener diode ZD1's
Cathode is connect with the cathode of first diode D1, and the anode of zener diode ZD1 is connect with the base stage of the first triode Q1, and first
The collector of triode Q1 is connect with the base stage of the second triode Q2, the emitter and switch power module of the second triode Q2
110 input terminal connection, the collector of the second triode Q2 are connect with the output end of switch power module 110, the first triode
The emitter of Q1 is grounded.
It should be noted that diode 1202 may include a diode, it also may include multiple two poles
Pipe.In embodiment, diode 1202 includes a diode, i.e., diode 1202 is first diode D1.When
So, when diode 1202 includes multiple diodes, diode can be parallel connection, or series connection, according to circuit
Depending on actual conditions.In embodiment, the negative temperature coefficient of first diode D1, when the temperature rises, first diode are utilized
The voltage drop value of D1 reduces, while the pressure stabilizing value of zener diode ZD1 increases, so that first diode D1 and zener diode
The output voltage values of Voltage stabilizing module composed by ZD1 keep stablizing；Correspondingly, when temperature reduces, the pressure of first diode D1
Depreciation increases, while the pressure stabilizing value of zener diode ZD1 reduces, so that first diode D1 and zener diode ZD1 institute
The output voltage values of the Voltage stabilizing module of composition keep stablizing.
In embodiment, voltage regulation unit 1201 further include: first resistor R1, second resistance R2 and first capacitor C1；First
The anode of one end of resistance R1 and zener diode ZD1 are connect, the other end of first resistor R1 respectively with second resistance R2 one
The base stage connection at end, one end of first capacitor C1 and the first triode Q1, the other end and first capacitor C1 of second resistance R2
The other end be grounded.In embodiment, the effect of first capacitor C1 is filtering, is filtered to high frequency and pulse interference signal
It removes.
Voltage regulation unit 1201 further include: 3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6；Third
One end of resistance R3 is connect with the collector of the first triode Q1, and the other end of 3rd resistor R3 is respectively with the second triode Q2's
The connection of one end of base stage and the 4th resistance R4；The other end of 4th resistance R4 respectively with the emitter of the second triode Q2 and
One end of 5th resistance R5 connects；The other end of 5th resistance R5 is connect with the input terminal of switch power module 110；6th resistance
One end of R6 is connect with the collector of the second triode Q2, the output of the other end and switch power module 110 of the 6th resistance R6
End connection.
Wherein, first resistor R1 is biasing resistor in the base stage of the first triode Q1, and effect is to limit base stage electricity
Stream, prevents supersaturated conducting；Second resistance R2 is the base stage below-center offset resistance of the first triode Q1, and effect is partial pressure effect；
3rd resistor R3 is the collector resistance of the first triode Q1, and effect is to avoid the first triode Q1 of damage for current limliting.Phase
It answers, the 4th resistance R4 is biasing resistor in the base stage of the second triode Q2, and effect was prevented to limit base current
Saturation conduction；5th resistance R5 is the emitter resistance of the second triode Q2, is to form negative-feedback to input signal；6th resistance
R6 is the collector resistance of the second triode Q2, and effect is to avoid the second triode Q2 of damage for current limliting.
Fig. 3 is the structural schematic diagram of another cross regulation rate circuit provided by the utility model.The present embodiment is upper
On the basis of stating embodiment, further embody is made to switch power module.With reference to Fig. 3, switch power module 110 includes:
Signal input unit 1101 and control unit 1102；
The first end of control unit 1102 is connect with the first end of signal input unit 1101, and the second of control unit 1102
End is connect with the 5th resistance R5, and the third end of control unit 1102 is connect with the 6th resistance R6.
Preferably, Fig. 4 is a kind of circuit diagram of cross regulation rate circuit provided by the utility model.The present embodiment is
On the basis of the above embodiments, the circuit connection shown between the modules or unit in cross regulation rate circuit is closed
System.
Wherein, control unit 1102, comprising: the first transistor Q4, the second diode D2 and the second capacitor C2；First crystal
The first end of pipe Q4 is connect with the other end of the 5th resistance R5 and power input respectively, the second end point of the first transistor Q4
It is not connect with one end of the cathode of the second diode D2, the other end of the 6th resistance R6 and the second capacitor C2；The first transistor
The third end of Q4 is connect with the other end of the second capacitor C2 and power output end respectively；The anode and signal of second diode D2
The first end of input unit 1101 connects.
Control unit 1102, further includes: third capacitor C3, the 7th resistance R7, the 8th resistance R8 and the 9th resistance R9；Its
In, one end of third capacitor C3, one end of the 7th resistance R7, the 8th resistance R8 first end of the one end with the first transistor Q4
Connection；The other end of third capacitor C3, the other end of the 8th resistance R8 are connect with one end of the 9th resistance R9；7th resistance R7
The other end, the 9th resistance R9 the other end connect with the anode of the second diode D2.
Signal input unit 1101, comprising: third transistor Q3 and third diode D3；Wherein, third transistor Q3
Base stage is connect with signal input part, and the collector of third transistor Q3 is connect with the cathode of third diode D3, third transistor
The emitter of Q3 is grounded, and the anode of third diode D3 is connect with the first end of control unit 1102.
Signal input unit 1101, further includes: the 4th capacitor C4, the 5th capacitor C5, the tenth resistance R10 and eleventh resistor
R11；Wherein, one end of the 4th capacitor C4 one end and the 11st with the base stage of third transistor Q3, the tenth resistance R10 respectively
One end of resistance R11 connects；One end of 5th capacitor C5 and the other end of eleventh resistor R11 connect with signal input part
It connects；The other end, the other end of the 5th capacitor C5 and the other end of the tenth resistance R10 of 4th capacitor C4 is grounded.
In embodiment, the first transistor Q4 can be metal-oxide-semiconductor, and effect realizes that switch power module 110 is exported
Voltage keeps stable state.Tenth resistance R10 is the base stage below-center offset resistance of third transistor Q3；Eleventh resistor R11 is
Biasing resistor in the base stage of three triode Q3.
Specifically, the working principle of cross regulation rate circuit is as follows: after PS_ON signal is opened, the first transistor Q4
ON operation, it is assumed that ideally output voltage is 24V, passes through zener diode ZD1, first resistor R1, second resistance R2
The higher identification of 24V voltage is carried out, realizes pressure stabilizing to turn off the first transistor Q4.Wherein, the resistance value of first resistor R1 takes 1K, and second
The resistance value of resistance R2 takes 1K, zener diode ZD1 to use 24V zener diode, and the first transistor Q4 uses metal-oxide-semiconductor, it is assumed that the
The conducting voltage of one triode Q1 and the second triode Q2 are 0.7V.Wherein, when diode is germanium tube, conducting voltage is
0.3V；When diode is silicone tube, conducting voltage 0.7V.In embodiment, it is assumed that first diode D1 is germanium tube, then first
The conducting voltage of diode D1 is 0.3V.In this way, when the voltage value that switch power module 110 exports is 25.7V, i.e., the one two
When the input voltage of pole pipe D1 reaches 24+0.7*2+0.3=25.7V, first diode D1 conducting, then the first triode Q1 is led
It is logical；The first triode Q1 conducting when, the second triode Q2 is also switched on, so metal-oxide-semiconductor Q4 be connected, i.e., the grid G of metal-oxide-semiconductor Q4 and
Source S is connected, so that metal-oxide-semiconductor Q4 is turned off, when output voltage is less than 25.7V, the source S and drain D phase of metal-oxide-semiconductor Q4
Even, so that metal-oxide-semiconductor Q4 is connected, pressure stabilizing is realized.
Also, when increasing with 110 power-on time of switch power module in cross regulation rate circuit, due to two pole of pressure stabilizing
Pipe ZD1 has positive temperature coefficient, then the pressure stabilizing value of zener diode ZD1 increases as temperature increases, but simultaneously because with steady
Press the concatenated first diode D1 of diode ZD1 that there is negative temperature coefficient, voltage drop value is reduced as temperature increases, then and first
Diode D1 and zener diode ZD1 form complementation, and the output voltage values of Voltage stabilizing module 120 can be kept to be in stable state；Phase
It answers, when the temperature decreases, the voltage drop value of corresponding first diode D1 can increase, zener diode as temperature reduces
The pressure stabilizing value of ZD1 can be reduced as temperature reduces, so that the pressure stabilizing of first diode D1 and zener diode ZD1 composition
The output voltage values of module 120 keep stable state, and then switch power module 110 can be kept to export stable voltage value.
The utility model embodiment additionally provides a kind of electronic equipment, which includes as provided in above-described embodiment
Any cross regulation rate circuit.
Cross regulation rate circuit provided by the utility model any embodiment can be performed in above-mentioned electronic equipment, has execution
The corresponding functional module of above-mentioned cross regulation rate circuit and beneficial effect.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of cross regulation rate circuit characterized by comprising switch power module and Voltage stabilizing module；The Voltage stabilizing module
It include: voltage regulation unit and diode；
The output end of the switch power module is connect with the first end of the diode, and the second of the diode
End is connect with the first end of the voltage regulation unit, and the input terminal of the second end of the voltage regulation unit and the switch power module connects
It connects；
The negative temperature coefficient of the diode formed with the positive temperature coefficient of the voltage regulation unit it is complementary so that the pressure stabilizing
The output voltage values of module reach stable state in temperature change.
2. cross regulation rate circuit according to claim 1, which is characterized in that the diode is the one or two pole
Pipe；The voltage regulation unit includes: zener diode, the first triode and the second triode；
The anode of the first diode is connect with the output end of the switch power module；The cathode of the zener diode with
The cathode of the first diode connects, and the anode of the zener diode is connect with the base stage of first triode, described
The collector of first triode is connect with the base stage of second triode, the emitter and the switch of second triode
The input terminal of power module connects, and the collector of second triode is connect with the output end of the switch power module, institute
State the emitter ground connection of the first triode.
3. cross regulation rate circuit according to claim 2, which is characterized in that the voltage regulation unit further include: the first electricity
Resistance, second resistance and first capacitor；
The anode of one end of the first resistor and the zener diode is connect, the other end of the first resistor respectively with institute
State the base stage connection of one end of second resistance, one end of the first capacitor and first triode, the second resistance
The other end and the other end of the first capacitor be grounded.
4. cross regulation rate circuit according to claim 3, which is characterized in that the voltage regulation unit further include: third electricity
Resistance, the 4th resistance, the 5th resistance and the 6th resistance；
One end of the 3rd resistor is connect with the collector of the first triode, and the other end of the 3rd resistor is respectively with second
The connection of one end of three extreme base stages and the 4th resistance；
The other end of 4th resistance connects with one end of the emitter of second triode and the 5th resistance respectively
It connects；
The other end of 5th resistance is connect with the input terminal of the switch power module；
One end of 6th resistance is connect with the collector of second triode, the other end of the 6th resistance with it is described
The output end of switch power module connects.
5. cross regulation rate circuit according to claim 4, which is characterized in that the switch power module includes: signal
Input unit and control unit；
The first end of described control unit is connect with the first end of the signal input unit, the second end of described control unit with
The 5th resistance connection, the third end of described control unit is connect with the 6th resistance.
6. cross regulation rate circuit according to claim 5, which is characterized in that described control unit, comprising: first crystal
Pipe, the second diode and the second capacitor；
The first end of the first transistor is connect with the other end of the 5th resistance and power input respectively, and described
The second end of one transistor respectively with the cathode of second diode, the other end of the 6th resistance and the second capacitor
One end connection；The third end of the first transistor is connect with the other end of the second capacitor and power output end respectively；It is described
The anode of second diode is connect with the first end of the signal input unit.
7. cross regulation rate circuit according to claim 6, which is characterized in that described control unit, further includes: third electricity
Appearance, the 7th resistance, the 8th resistance and the 9th resistance；
One end of the third capacitor, one end of the 7th resistance, the 8th resistance one end with the first transistor first
End connection；The other end of third capacitor, the 8th resistance the other end connect with one end of the 9th resistance；Described
The other end of seven resistance, the 9th resistance the other end connect with the anode of second diode.
8. cross regulation rate circuit according to claim 5, which is characterized in that the signal input unit, comprising: third
Triode and third diode；
The base stage of the third transistor is connect with the signal input part, the collector of the third transistor and the third
The cathode of diode connects, and the emitter ground connection of the third transistor, the anode of the third diode and the control are single
The first end connection of member.
9. cross regulation rate circuit according to claim 8, which is characterized in that the signal input unit, further includes: the
Four capacitors, the 5th capacitor, the tenth resistance and eleventh resistor；
One end of 4th capacitor respectively with the base stage of the third transistor, one end of the tenth resistance and described
One end of 11 resistance connects；One end of 5th capacitor and the other end of eleventh resistor connect with signal input part
It connects；The other end, the other end of the 5th capacitor and the other end of the tenth resistance of 4th capacitor are grounded.
10. a kind of electronic equipment, which is characterized in that the electronic equipment is adjusted comprising intersection as described in any one of claim 1 to 9
Whole rate circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920206486.2U CN209313725U (en) | 2019-02-18 | 2019-02-18 | Cross adjustment rate circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920206486.2U CN209313725U (en) | 2019-02-18 | 2019-02-18 | Cross adjustment rate circuit and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN209313725U true CN209313725U (en) | 2019-08-27 |
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ID=67681715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920206486.2U Active CN209313725U (en) | 2019-02-18 | 2019-02-18 | Cross adjustment rate circuit and electronic equipment |
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| CN (1) | CN209313725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118381303A (en) * | 2024-03-28 | 2024-07-23 | 江西联创电子有限公司 | Power supply circuit, ultrasonic radar and vehicle |
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2019
- 2019-02-18 CN CN201920206486.2U patent/CN209313725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118381303A (en) * | 2024-03-28 | 2024-07-23 | 江西联创电子有限公司 | Power supply circuit, ultrasonic radar and vehicle |
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