CN201821264U - Power supply system with function of power-on protection and power-off protection for microwave/millimeter-wave circuit - Google Patents
Power supply system with function of power-on protection and power-off protection for microwave/millimeter-wave circuit Download PDFInfo
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- CN201821264U CN201821264U CN2010205669090U CN201020566909U CN201821264U CN 201821264 U CN201821264 U CN 201821264U CN 2010205669090 U CN2010205669090 U CN 2010205669090U CN 201020566909 U CN201020566909 U CN 201020566909U CN 201821264 U CN201821264 U CN 201821264U
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Abstract
A power supply system with function of power-on protection and power-off protection for a microwave/millimeter-wave circuit belongs to the technical field of electronics. The power supply system comprises a voltage stabilizing module, a power-on protection module, a power-off protection module and a reverse isolator. During the power-on state of the microwave/millimeter-wave circuit, the working voltage of the microwave/millimeter-wave circuit slowly rises to a preset value through the power-on protection module (charge delay); and during the power-off state of the microwave/millimeter-wave circuit, the working voltage of the microwave/millimeter-wave circuit slowly drops to zero through the power-off protection module (discharge delay). Besides, the existence of the reverse isolator prevents the forward discharge of the discharge current to the power supply system, so as to prolong the service life of the power supply system. Furthermore, the output voltage of the power supply system is adjustable and suitable for microwave/millimeter-wave circuit systems with different working voltage needs. The power supply system also has the characteristics that the power supply system has the advantages of simple circuit, high safety and stability and small volume, is convenient for integration, reduces the cost and is easy to implement.
Description
Technical field
The utility model belongs to electronic technology field, relates to stabilized voltage power supply, specifically is meant a kind of microwave and millimeter wave circuit power supply system that powers on power-off protection function that has.
Background technology
In the microwave and millimeter wave Circuits and Systems, excessive electric current and higher voltage all might be damaged components and parts, and then influence whole system.In today that system integration develops rapidly, it is particularly outstanding that this problem seems.At present, the microwave and millimeter wave Circuits and Systems are the various voltage-stabilizing power supply systems of utilization extensively, and these systems have guaranteed the normal operation of circuit.But, because the microwave and millimeter wave device costs an arm and a leg, and is subjected to the interference of electric source disturbance easily, on be damaged probably when cutting off the power supply.Therefore, the microwave and millimeter wave circuit is necessary to adopt the electric power system with defencive function.
Summary of the invention
The utility model provides a kind of microwave and millimeter wave circuit power supply system that powers on power-off protection function that has; this electric power system has the operating voltage that powers on power-off protection function for the microwave and millimeter wave circuit provides; to guarantee the safe operation of microwave and millimeter wave circuit, avoid microwave and millimeter wave circuit elements device to suffer the impact of overshoot voltage or electric current and damage.
Technical solution of the present invention is as follows:
A kind of have power on and the microwave and millimeter wave circuit power supply system of power-off protection function, as shown in Figure 1, comprise a Voltage stabilizing module, the protection module that powers on, a power failure protection module and a reverse isolation device.The burning voltage of described Voltage stabilizing module output is successively through behind the described protection module that powers on, described reverse isolation device and the described power failure protection module, for the microwave and millimeter wave Circuits System provides operating voltage.
Described Voltage stabilizing module (as shown in Figure 2), by a voltage stabilizing chip, a filter capacitor C1 and two resistance R 1, R2 form; The input of described voltage stabilizing chip connects resistance R 1 by described filter capacitor C1 ground connection between output and the adjustable side, the adjustable side is by resistance R 2 ground connection.The input voltage of described Voltage stabilizing module is input to Voltage stabilizing module after filter capacitor C1 filtering, output output voltage V 1, adjustable side output voltage V 2.
The described protection module that powers on is a charging delay circuit, as shown in Figure 3, by a triode Q1, a diode D1, two resistance R 3, R4 and capacitor C 2 are formed; The voltage V1 of described Voltage stabilizing module output connects the emitter of triode Q1 through resistance R 3, and the voltage V2 of described Voltage stabilizing module output connects the base stage of triode Q1 and the positive pole of diode D1 through resistance R 4; The grounded collector of triode Q1, the base stage of triode Q1 are by capacitor C 2 ground connection, and the negative pole of diode D1 is exported the output voltage after last electric protection.
Described reverse isolation device is made up of triode Q2 and diode D2 as shown in Figure 4; The base stage of triode Q2 links to each other with the negative pole of diode D2, and the collector electrode of triode Q2 links to each other with the positive pole of diode D2; Described output voltage after last electric protection connects the positive pole of diode D2 and the collector electrode of triode Q2, and the emitter of triode Q2 is exported the output voltage of anti-phase isolation.
Described power failure protection module is a discharge delay circuit, as shown in Figure 4, is formed in parallel by resistance R 5 and capacitor C 3.The emitter of triode Q2 in the anti-phase isolator of one termination of resistance R 5 and capacitor C 3 parallel circuitss, other end ground connection; Resistance R 5 and capacitor C 3 parallel circuits output voltages are exactly the required operating voltage of microwave and millimeter wave circuit.
Essence of the present utility model is on the basis of conventional stabilized voltage power supply, increases the protective circuit that powers on, a reverse isolation device and a power-off protecting circuit.As shown in Figure 5, when the microwave and millimeter wave circuit powers on, make the microwave and millimeter wave circuit voltage slowly rise to set point by the protection module that powers on (charging time-delay); When the microwave and millimeter wave down circuitry, make the microwave and millimeter wave circuit voltage slowly drop to zero from set point by power failure protection module (discharge time-delay); And, when the microwave and millimeter wave down circuitry, because the existence of anti-phase isolator makes discharging current not discharge to the electric power system forward direction, thereby prolonged the life-span of electric power system.Simultaneously, the microwave and millimeter wave circuit power supply system that the utility model provides, its voltage stabilizing chip can adopt conventional three-terminal voltage-stabilizing device, by setting the different ratios of R2/R1 in the Voltage stabilizing module, can regulate the voltage (V1) of Voltage stabilizing module output, thereby be applicable to the microwave and millimeter wave Circuits System of different operating voltage requirements.
To sum up, the beneficial effects of the utility model are:
The utility model provides a kind of microwave and millimeter wave circuit power supply system that powers on power-off protection function that has; this electric power system has the operating voltage that powers on power-off protection function for the microwave and millimeter wave circuit provides; to guarantee the safe operation of microwave and millimeter wave circuit, avoid microwave and millimeter wave circuit elements device to suffer the impact of overshoot voltage or electric current and damage.And it is simple that this electric power system also has a circuit, safety, stable, and volume is little, is convenient to integratedly, with low cost, is easy to characteristics such as realization.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit diagram of the utility model Voltage stabilizing module.
Fig. 3 is the power on circuit diagram of protection module of the utility model.
Fig. 4 is the circuit diagram of anti-phase isolator of the utility model and power failure protection module.
Fig. 5 is the change curve of the output voltage that will realize of the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the theory diagram of this utility model.This utility model provides has and powers on and the microwave and millimeter wave circuit power supply system of power-off protection function, comprises a Voltage stabilizing module, the protection module that powers on, a power failure protection module and a reverse isolation device; It is characterized in that the burning voltage of described Voltage stabilizing module output is successively through behind the described protection module that powers on, described reverse isolation device and the described power failure protection module, for the microwave and millimeter wave Circuits System provides operating voltage.
Fig. 2 is the output voltage curve that this use novel system will be realized.
Fig. 3 is Voltage stabilizing module and output adjustment module.Described Voltage stabilizing module is by a voltage stabilizing chip, and a filter capacitor C1 and two resistance R 1, R2 form; The input of described voltage stabilizing chip connects resistance R 1 by described filter capacitor C1 ground connection between output and the adjustable side, the adjustable side is by resistance R 2 ground connection.The input voltage of described Voltage stabilizing module is input to Voltage stabilizing module after filter capacitor C1 filtering, output output voltage V 1, the tie point output voltage V 2 of resistance R 1 and resistance R 2.When powering on, the output of voltage stabilizing chip and adjustable side keep certain pressure reduction (as 1.5V), therefore, and output voltage=adjustable side voltage+1.5V.According to calculating, output voltage=1.5 * (1+R2/R1), therefore, the value that can regulate output voltage by the ratio of regulating R2 and R1.It is bigger generally can to regulate big output voltage range, therefore can satisfy the power reguirements of most of microwave and millimeter wave circuit.
The power on circuit diagram of protection module of Fig. 4.The described protection module that powers on is the delay circuit that powers on, by a triode Q1, and a diode D1, two resistance R 3, R4 and capacitor C 2 are formed; The voltage V1 of described Voltage stabilizing module output connects the emitter of triode Q1 through resistance R 3, and the voltage V2 of described Voltage stabilizing module output connects the base stage of triode Q1 and the positive pole of diode D1 through resistance R 4; The grounded collector of triode Q1, the base stage of triode Q1 are by capacitor C 2 ground connection, and the negative pole of diode D1 is exported the output voltage after last electric protection.When powering on, make the output voltage of electric power system that a process that slowly rises be arranged, to prevent current over pulse.
Fig. 5 is reverse isolation device and discharge protection circuit.Described reverse isolation device is made up of triode Q2 and diode D2; The base stage of triode Q2 links to each other with the negative pole of diode D2, and the collector electrode of triode Q2 links to each other with the positive pole of diode D2; Described output voltage after last electric protection connects the positive pole of diode D2 and the collector electrode of triode Q2, and the emitter of triode Q2 is exported the output voltage of anti-phase isolation.Described power failure protection module is that an outage time delay discharge circuit is formed in parallel by resistance R 5 and capacitor C 3; The emitter of triode Q2 in the anti-phase isolator of one termination of resistance R 5 and capacitor C 3 parallel circuitss, other end ground connection; Resistance R 5 and capacitor C 3 parallel circuits output voltages are exactly the required operating voltage of microwave and millimeter wave circuit.
Isolator conducting during forward current, isolator ends in the time of oppositely; Like this, when outage, follow-up circuit is just isolated with the power unit of front, thereby has prevented the phenomenon of electric capacity forward direction discharge.Doing like this can the stabilized power supply electric power system, prolongs power source life.During outage, put the supply power voltage that a capacitor C 3 can provide a period of time to the microwave and millimeter wave circuit, make the supply power voltage of microwave and millimeter wave circuit that the process that descends slowly be arranged, prevent current over pulse, thereby played the effect of protective circuit.The time of time-delay can be determined by the value of regulating resistance R 5 and capacitor C 3.
Through the actual measurement checking; the utility model provides has and powers on and the microwave and millimeter wave circuit power supply system of power-off protection function; its power on and the charging of the time delay module that cuts off the power supply time-delay and discharge delay time can near in addition reached for 1 second, can realize defencive function fully to the microwave and millimeter wave circuit.
Claims (1)
1. one kind has the microwave and millimeter wave circuit power supply system that powers on power-off protection function, comprises a Voltage stabilizing module, the protection module that powers on, a power failure protection module and a reverse isolation device; It is characterized in that the burning voltage of described Voltage stabilizing module output is successively through behind the described protection module that powers on, described reverse isolation device and the described power failure protection module, for the microwave and millimeter wave Circuits System provides operating voltage;
Described Voltage stabilizing module is by a voltage stabilizing chip, and a filter capacitor C1 and two resistance R 1, R2 form; The input of described voltage stabilizing chip is by described filter capacitor C1 ground connection, connect resistance R 1 between output and the adjustable side, the adjustable side is by resistance R 2 ground connection, the input voltage of described Voltage stabilizing module is input to Voltage stabilizing module after filter capacitor C1 filtering, output output voltage V 1, adjustable side output voltage V 2;
The described protection module that powers on is the delay circuit that powers on, by a triode Q1, and a diode D1, two resistance R 3, R4 and capacitor C 2 are formed; The voltage V1 of described Voltage stabilizing module output connects the emitter of triode Q1 through resistance R 3, and the voltage V2 of described Voltage stabilizing module output connects the base stage of triode Q1 and the positive pole of diode D1 through resistance R 4; The grounded collector of triode Q1, the base stage of triode Q1 are by capacitor C 2 ground connection, and the negative pole of diode D1 is exported the output voltage after last electric protection;
Described reverse isolation device is made up of triode Q2 and diode D2; The base stage of triode Q2 links to each other with the negative pole of diode D2, and the collector electrode of triode Q2 links to each other with the positive pole of diode D2; Described output voltage after last electric protection connects the positive pole of diode D2 and the collector electrode of triode Q2, and the emitter of triode Q2 is exported the output voltage of anti-phase isolation;
Described power failure protection module is that an outage time delay discharge circuit is formed in parallel by resistance R 5 and capacitor C 3; The emitter of triode Q2 in the anti-phase isolator of one termination of resistance R 5 and capacitor C 3 parallel circuitss, other end ground connection; Resistance R 5 and capacitor C 3 parallel circuits output voltages are exactly the required operating voltage of microwave and millimeter wave circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205669090U CN201821264U (en) | 2010-10-19 | 2010-10-19 | Power supply system with function of power-on protection and power-off protection for microwave/millimeter-wave circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205669090U CN201821264U (en) | 2010-10-19 | 2010-10-19 | Power supply system with function of power-on protection and power-off protection for microwave/millimeter-wave circuit |
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| Publication Number | Publication Date |
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| CN201821264U true CN201821264U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205669090U Expired - Fee Related CN201821264U (en) | 2010-10-19 | 2010-10-19 | Power supply system with function of power-on protection and power-off protection for microwave/millimeter-wave circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154794A (en) * | 2017-06-02 | 2017-09-12 | 广东汇泰龙科技有限公司 | It is a kind of based on USB meet an urgent need electrification reset circuit and apply its intelligent door lock emergency power supply system |
-
2010
- 2010-10-19 CN CN2010205669090U patent/CN201821264U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154794A (en) * | 2017-06-02 | 2017-09-12 | 广东汇泰龙科技有限公司 | It is a kind of based on USB meet an urgent need electrification reset circuit and apply its intelligent door lock emergency power supply system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20131019 |