CN104283183A - Alarm giving protective system and device - Google Patents
Alarm giving protective system and device Download PDFInfo
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- CN104283183A CN104283183A CN201310294522.2A CN201310294522A CN104283183A CN 104283183 A CN104283183 A CN 104283183A CN 201310294522 A CN201310294522 A CN 201310294522A CN 104283183 A CN104283183 A CN 104283183A
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Abstract
The embodiment of the invention discloses an alarm giving protective system and device. The alarm giving protective system is formed by discrete components. By means of the alarm giving protective system and device, when the output voltage of a power source is instable, the working voltage output by the power source to loads can be switched off, it is reminded that the output voltage of the power source is in the instable state through a buzzer, and the aim of being capable of protecting the to-be-detected loads when the voltage is instable is achieved; meanwhile, a detector can adjust the output voltage of the power source according to alarm giving information of the system, the working efficiency of the detector can be improved, and the testing cost can be reduced.
Description
Technical field
The present invention relates to protective circuit field, particularly relate to a kind of alarm and protection system and equipment.
Background technology
Illuminating product in modern society's application widely and important, and all may be different in all trades and professions application.But same object be all for user provide enough brightness to read to enable user carry out in the insufficient place of light, work, study etc.
Along with the raising of people's quality of the life, user requires more and more higher to lighting quality, also more and more higher to the performance requirement of light fixture product, thus light fixture product before dispatching from the factory for ensure light fixture can reach the theoretical performance meeting customer requirement, burn-in test need be carried out to light fixture product.
Carry out in the process of burn-in test at light fixture, due to the instability of input voltage, light fixture can be caused to fluctuate by high pressure or low-tension supply, cause test result inaccurate like this, make the performance parameters such as the electrical quantity of light fixture testing light source optical parameter, electric component after aging certain hour that very large drift all can occur, cause even specimen breakdown, test data inaccurate or need test be re-started, waste corporate resource and increase test period, add project development cost.And manufacturer prevents the instability of input voltage to cause light fixture test data to be measured inaccurate, increase the numerical value that testing staff carrys out fixed time test input voltage, but this also thoroughly cannot ensure the accuracy of test data, and the working strength of tester is large, and but operating efficiency is not high.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of alarm and protection system and equipment.Load to be measured can be protected in the timing of power supply output services voltage instability, improve tester's operating efficiency simultaneously, reduce testing cost.
In order to solve the problems of the technologies described above, embodiments provide a kind of alarm and protection system, described system is connected with at least one load to be measured, and described system comprises power supply, and described system also comprises:
Decompression rectifier filter circuit, overvoltage crowbar, under-voltage protecting circuit, triode VT1, on-off controller and alarm controller;
The base stage of described triode VT1 is connected with one end of described under-voltage protecting circuit with one end of described overvoltage crowbar respectively, the other end of described under-voltage circuit is connected with described power supply with the other end of described overvoltage circuit, the collector electrode of described triode VT1 is connected by described on-off controller one end with described decompression rectifier filter circuit, the grounded emitter of the VT1 of described triode;
One end of described decompression rectifier filter circuit is connected with one end of described alarm controller with one end of described on-off controller respectively, and the other end of described decompression rectifier filter circuit is connected with described power supply, the other end ground connection of described alarm controller.
Wherein, described alarm controller comprises:
Divider resistance R2, relay K and buzzer SP;
One end of relay K coil is connected with described decompression rectifier filter circuit by divider resistance R2, the other end ground connection of relay K-1 coil, in relay K-1, one end of normally opened contact is connected with described divider resistance R2, and in relay K-1, the other end of normally opened contact is connected with one end of described buzzer SP;
The other end ground connection of described buzzer SP.
Wherein, described overvoltage crowbar comprises:
Adjustable resistance RP1, not circuit 1, not circuit 2 and diode VD3;
The input of described not circuit 1 is connected with the slide plate end of described adjustable resistance RP1, one end of described adjustable resistance RP1 is connected with described power supply, the other end ground connection of described adjustable resistance RP1, the output of described not circuit 1 is connected with described not circuit 2 input;
The input of described not circuit 2 is connected with the output of described not circuit 1, and the output of described not circuit 2 is connected with described diode VD3 anode, and described diode VD3 negative electrode is connected with the VT1 base stage of described triode.
Wherein, described under-voltage protecting circuit comprises:
Adjustable resistance RP2, not circuit 3 and diode VD4;
The input of described not circuit 3 is connected with the slide plate end of described adjustable resistance RP2, one end of described adjustable resistance RP2 is connected with described power supply, the other end ground connection of described adjustable resistance RP2, the output of described not circuit 3 is connected with the anode of described diode VD4, and described diode VD4 negative electrode is connected with described triode VT1 base stage.
Wherein, described system also comprises: divider resistance R1, rectifier diode VD1 and filter capacitor C3;
One end of described adjustable resistance RP1 is connected with described power supply and comprises:
One end of described adjustable resistance RP1 is connected with the negative electrode of described rectifier diode VD1, the anode of described rectifier diode VD1 is connected to power supply by described divider resistance R1, one end of described filter capacitor C3 is connected with the negative electrode of described rectifier diode VD1, the other end ground connection of described filter capacitor C3;
One end of described adjustable resistance RP2 is connected with described power supply and comprises:
One end of described adjustable resistance RP2 is connected with the negative electrode of described rectifier diode VD1.
Wherein, described on-off controller comprises: diode VD2 and relay K-1;
The negative electrode of diode VD2 connects described decompression rectifier filter circuit, the anode of diode VD2 is connected with the collector electrode of triode VT1, one end of relay K-1 coil is connected with the negative electrode of diode VD2, the other end of relay K-1 coil is connected with the anode of diode VD2, in relay K-1, one end of normally-closed contact connects power supply, and in relay K-1, the other end of normally-closed contact connects load.
Wherein, described decompression rectifier filter circuit comprises:
Transformer T, rectifier bridge stack BD1, voltage stabilizing triode VT2, filter capacitor C1 and filter capacitor C2;
Armature winding one end of described transformer T is connected with described power supply, the armature winding other end of described transformer T is connected with described power supply, secondary winding one end of described transformer T is connected with one end of described rectifier bridge stack BD input, the other end of the secondary winding of described transformer T is connected with the other end of the input of described rectifier bridge stack BD, the cathode output end of described rectifier bridge stack BD is connected with described voltage stabilizing triode VT2 input, the cathode output end ground connection of described rectifier bridge stack BD;
Described voltage stabilizing triode VT2 input is connected with the cathode output end of described rectifier bridge stack BD, described voltage stabilizing triode VT2 output is connected with the negative electrode of the diode VD2 of described on-off controller with the divider resistance R2 of described alarm controller respectively, described voltage stabilizing triode VT2 earth terminal ground connection;
Described filter capacitor C1 one end is connected with described voltage stabilizing triode VT2 input, described filter capacitor C1 other end ground connection;
Described filter capacitor C2 one end is connected with described voltage stabilizing triode VT2 output, described filter capacitor C2 other end ground connection.
Wherein, described system also comprises: fuse FR1 and fuse FR2;
Armature winding one end of described transformer T is connected with described power supply and comprises: armature winding one end of described transformer T is connected with described power supply by described fuse FR1;
The armature winding other end of described transformer T is connected with described power supply and comprises: the armature winding other end of described transformer T is connected with described power supply by described fuse FR2.
Correspondingly, the embodiment of the present invention additionally provides a kind of equipment, and described equipment is connected with at least one load to be measured, and described equipment also comprises the above-described alarm and protection system be connected between power supply and load.
Implement the embodiment of the present invention, there is following beneficial effect:
Alarm and protection system structure of the present invention is simple; safe and reliable; when supply voltage exports unstable; can to cut off the electricity supply on output services voltage to load and to be played pendulum by buzzer prompting electric power output voltage; reach when voltage instability timing can protect the object of load to be measured; make testing staff can adjust according to the output voltage of the information of system to power supply simultaneously, improve the operating efficiency of testing staff, and reduce testing cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of the alarm and protection system that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, for the embodiment of the present invention provides a kind of circuit theory diagrams of alarm and protection system.As shown in Figure 1, described system is connected with at least one load 10 to be measured, and described system comprises power supply 700, also comprises:
Decompression rectifier filter circuit 100, overvoltage crowbar 200, under-voltage protecting circuit 300, triode VT1, on-off controller 400 and alarm controller 500;
The base stage of described triode VT1 is connected with one end of described under-voltage protecting circuit 300 with one end of described overvoltage crowbar 200 respectively, the other end of described under-voltage protecting circuit 300 is connected with described power supply 700 with the other end of described overvoltage crowbar 200, the collector electrode of described triode VT1 is connected by described on-off controller 400 one end with described decompression rectifier filter circuit 100, the grounded emitter of the VT1 of described triode;
One end of described decompression rectifier filter circuit 100 is connected with one end of described alarm controller 500 with one end of described on-off controller 400 respectively, the other end of described decompression rectifier filter circuit 100 is connected with described power supply 700, the other end ground connection of described alarm controller 500.
Further alternative, in embodiments of the present invention, described alarm controller 500 comprises:
Divider resistance R2, relay K and buzzer SP;
One end of relay K coil is connected with described decompression rectifier filter circuit 100 by divider resistance R2, the other end ground connection of relay K-1 coil, in relay K-1, one end of normally opened contact is connected with described divider resistance R2, and in relay K-1, the other end of normally opened contact is connected with one end of described buzzer SP;
The other end ground connection of described buzzer SP.
Further alternative, in embodiments of the present invention, described overvoltage crowbar 200 comprises:
Adjustable resistance RP1, not circuit 1, not circuit 2 and diode VD3;
The input of described not circuit 1 is connected with the slide plate end of described adjustable resistance RP1, one end of described adjustable resistance RP1 is connected with described power supply 700, the other end ground connection of described adjustable resistance RP1, the output of described not circuit 1 is connected with described not circuit 2 input;
The input of described not circuit 2 is connected with the output of described not circuit 1, and the output of described not circuit 2 is connected with described diode VD3 anode, and described diode VD3 negative electrode is connected with the VT1 base stage of described triode.
Further alternative, in embodiments of the present invention, described under-voltage protecting circuit 300 comprises:
Adjustable resistance RP2, not circuit 3 and diode VD4;
The input of described not circuit 3 is connected with the slide plate end of described adjustable resistance RP2, one end of described adjustable resistance RP2 is connected with described power supply, the other end ground connection of described adjustable resistance RP2, the output of described not circuit 3 is connected with the anode of described diode VD4, and described diode VD4 negative electrode is connected with described triode VT1 base stage.
Further alternative, in embodiments of the present invention, described system also comprises: divider resistance R1, rectifier diode VD1 and filter capacitor C3;
One end of described adjustable resistance RP1 is connected with described power supply 700 and comprises:
One end of described adjustable resistance RP1 is connected with the negative electrode of described rectifier diode VD1, the anode of described rectifier diode VD1 is connected to power supply 700 by described divider resistance R1, one end of described filter capacitor C3 is connected with the negative electrode of described rectifier diode VD1, the other end ground connection of described filter capacitor C3;
One end of described adjustable resistance RP2 is connected with described power supply 700 and comprises:
One end of described adjustable resistance RP2 is connected with the negative electrode of described rectifier diode VD1.
Further alternative, in embodiments of the present invention, described on-off controller 400 comprises: diode VD2 and relay K-1;
The negative electrode of diode VD2 is connected with described decompression rectifier filter circuit one end, the anode of diode VD2 is connected with the collector electrode of triode VT1, one end of relay K-1 coil is connected with the negative electrode of diode VD2, the other end of relay K-1 coil is connected with the anode of diode VD2, in relay K-1, one end of normally-closed contact connects power supply 700, and in relay K-1, the other end of normally-closed contact connects load 500.
Further alternative, in embodiments of the present invention, described decompression rectifier filter circuit 100 comprises:
Transformer T, rectifier bridge stack BD1, voltage stabilizing triode VT2, filter capacitor C1 and filter capacitor C2;
Armature winding one end of described transformer T is connected with described power supply 700, the armature winding other end of described transformer T is connected with described power supply 700, secondary winding one end of described transformer T is connected with one end of described rectifier bridge stack BD input, the other end of the secondary winding of described transformer T is connected with the other end of the input of described rectifier bridge stack BD, the cathode output end of described rectifier bridge stack BD is connected with described voltage stabilizing triode VT2 input, the cathode output end ground connection of described rectifier bridge stack BD;
Described voltage stabilizing triode VT2 input is connected with the cathode output end of described rectifier bridge stack BD, described voltage stabilizing triode VT2 output is connected with the negative electrode of the diode VD2 of described on-off controller 400 with the divider resistance R2 of described alarm controller 500 respectively, described voltage stabilizing triode VT2 earth terminal ground connection;
Described filter capacitor C1 one end is connected with described voltage stabilizing triode VT2 input, described filter capacitor C1 other end ground connection;
Described filter capacitor C2 one end is connected with described voltage stabilizing triode VT2 output, described filter capacitor C2 other end ground connection.
Further alternative, in embodiments of the present invention, described system also comprises: fuse FR1 and fuse FR2;
Armature winding one end of described transformer T is connected with described power supply 700 and comprises: armature winding one end of described transformer T is connected with described power supply 700 by described fuse FR1;
The armature winding other end of described transformer T is connected with described power supply 700 and comprises: the armature winding other end of described transformer T is connected with described power supply 700 by described fuse FR2.
Present invention also offers a kind of equipment, described checkout equipment is connected with at least one light fixture to be measured, and described equipment can comprise alarm and protection system, and the circuit structure of the alarm and protection system in institute's equipment can see Fig. 1.
Wherein, described equipment can be used for detecting the input voltage to the power consumption equipment of input voltage sensitivity, and but the input voltage of input voltage unstable alarm prompting testing staff power consumption equipment is unstable.
Composition graphs 1 more below, is described in detail the operation principle of described alarm and protection system.
Power supply 700 can be the alternating current of household electricity 220V.In decompression rectifier filter circuit 100 step-down rectifying circuit, power supply 700, through transformer T step-down, carries out rectification through rectifier bridge stack BD, and electric capacity C1 carries out filtering after filtering, then exports voltage stabilizing through voltage stabilizing triode VT2.Wherein, voltage stabilizing triode VT2 can be model be 7812 voltage stabilizing triode.The voltage stabilizing exported through voltage-stabiliser tube VT2 obtains galvanic current pressure or electric current after electric capacity C2 absorption peak voltage more after filtering.Wherein, direct current provides electric current to work for on-off controller 400 for on-off controller 400; the instantaneous peak voltage that relay K-1 two ends that the diode VD2 of on-off controller 400 absorbs on-off controller 400 produce because of relay K-1 break-make with protective circuit, in order to avoid the excessive damage circuit of instantaneous peak voltage.Further, when the relay K-1 of on-off controller 400 has electric current to pass through, normally-closed contact disconnects.
Further, power supply 700 also has a road to be diverted to R1, carries out dividing potential drop through R1, carries out rectification through diode DV1, and electric capacity C3 carries out filtering after filtering, then carries out dividing potential drop through adjustable resistance RP1 and adjustable resistance RP2.Wherein, adjustable resistance RP1 will divide a same voltage with on adjustable resistance RP2, and in embody rule, adjustable resistance RP1 and adjustable resistance RP2 will produce the voltage of about 10.5V separately.Wherein adjustable resistance RP1 and adjustable resistance RP2 can slide rheostat.
Further, in overvoltage crowbar 200, not circuit 1 and not circuit 2 form overvoltage sample circuit, gather the change of adjustable resistance RP1 both end voltage.Wherein, not circuit is a kind of inverter, and when input is high level, output is low level, and when input is low level, output is high level.Not circuit 1 and not circuit 2 can be the not circuits of CD4069-2 model.When the voltage of power supply 700 is higher, adjustable resistance RP1 both end voltage raises, and not circuit 1 input level is high level, not circuit 1 output low level through not circuit 2, not circuit 2 exports high level.Described high level exports the base stage of triode VT to by diode VD3.When the base stage high level of triode VT, then the current collection of triode VT very low level, thus make triode VT conducting.In embodiments of the present invention, J1, J2 contact point of the relay K-1 of on-off controller 400 is normally-closed contacts, and namely energising disconnects; The contact point of J3, J4 of the relay K-2 of alarm controller 500 is normally opened contact, and namely energising closes.Therefore when the conducting of triode VT, the relay K-1 of on-off controller 400 has electric current to pass through, the normally closed disconnection of J1, J2 of relay K-1, then the load to be measured being connected to the J2 contact point of relay K-1 disconnects.Wherein, load to be measured can be that described light fixture is no less than one as the light fixture 10 in Fig. 1.Meanwhile, the relay K-2 of alarm controller 500 also has electric current to pass through, J3 and J4 of relay K-2 is often made war closed, then the buzzer SP being connected to the J4 contact point of relay K-2 accesses in loop, and buzzer SP reports to the police.
By upper we be understandable that, when the voltage that power supply 700 exports is higher, electric current is by the conducting of not circuit 1 and not circuit 2 control VT, relay K-1 and relay K-2 are energized, relay K-1 normally-closed contact disconnects, load to be measured disconnects, and relay K-2 is often made war closed, and buzzer SP reports to the police.Therefore overvoltage crowbar 200 not only effectively prevent that voltage is higher affects load parameter, meanwhile, buzzer warning can point out the voltage output abnormality of tester's power supply 700, and the voltage that need carry out adjusting power supply 700 exports.Wherein, the voltage data that tester exports by the voltage of voltmeter testing power supply 700, exports the actual voltage value adjusted to load to be measured and need by the voltage of power supply 700, makes load to be measured continue normal work.
In under-voltage protecting circuit, not circuit 3 gathers the change of adjustable resistance RP2 both end voltage.Wherein, not circuit 3 can be the not circuit of CD4069-2 model.When the low voltage of power supply 700, adjustable resistance RP2 both end voltage reduces, and not circuit 3 input level is low level, exports high level.Described high level exports the base stage of triode VT to by diode VD3.When the base stage high level of triode VT, the current collection very low level of triode VT, then now triode VT conducting.In embodiments of the present invention, J1, J2 contact point of the relay K-1 of on-off controller 400 is normally-closed contacts, and namely energising disconnects; The contact point of J3, J4 of the relay K-2 of alarm controller 500 is normally opened contact, and namely energising closes.Therefore when the conducting of triode VT, the relay K-1 of on-off controller 400 has electric current to pass through, the normally closed disconnection of J1, J2 of relay K-1, the load to be measured being connected to the J2 contact point of relay K-1 disconnects.Meanwhile, J3 and J4 of the relay K-2 of alarm controller 500 is often made war closed, then the buzzer SP being connected to the J4 contact point of relay K-2 accesses in loop, and buzzer SP reports to the police.
By upper we be understandable that, when power supply 700 export low voltage time, electric current is by the conducting of not circuit 3 control VT, relay K-1 and relay K-2 are energized, and relay K-1 normally-closed contact disconnects, and load to be measured disconnects, relay K-2 is often made war closed, and buzzer SP reports to the police.Therefore overvoltage crowbar not only effectively prevent that voltage is higher affects load parameter, meanwhile, buzzer warning can point out the voltage output abnormality of tester's power supply 700, and the voltage that need carry out adjusting power supply 700 exports.Wherein, the voltage data that tester exports by the voltage of voltmeter testing power supply 700, exports the actual voltage value adjusted to load to be measured and need by the voltage of power supply 700, makes load to be measured continue normal work.
Further, when short circuit phenomenon appears in system, fuse FR1 and fuse FR2 can carry out fusing the connection in disconnected power down source 700, thus protection system.
In sum; alarm and protection system structure of the present invention is simple; safe and reliable; when supply voltage exports unstable; system can be cut off the electricity supply on output services voltage to load and to be played pendulum by buzzer prompting electric power output voltage, reaches when voltage instability timing can protect the object of load to be measured, makes testing staff can adjust according to the output voltage of the information of system to power supply simultaneously; improve the operating efficiency of testing staff, and reduce testing cost.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (9)
1. an alarm and protection system, described circuit is connected with at least one load to be measured, and described system comprises power supply, it is characterized in that, described system comprises:
Decompression rectifier filter circuit, overvoltage crowbar, under-voltage protecting circuit, triode VT1, on-off controller and alarm controller;
The base stage of described triode VT1 is connected with one end of described under-voltage protecting circuit with one end of described overvoltage crowbar respectively, the other end of described under-voltage protecting circuit is connected with described power supply respectively with the other end of described overvoltage crowbar, the collector electrode of described triode VT1 is connected by described on-off controller one end with described decompression rectifier filter circuit, the grounded emitter of the VT1 of described triode;
One end of described decompression rectifier filter circuit is connected with one end of described alarm controller with one end of described on-off controller respectively, and the other end of described decompression rectifier filter circuit is connected with described power supply, the other end ground connection of described alarm controller.
2. the system as claimed in claim 1, is characterized in that, described alarm controller comprises:
Divider resistance R2, relay K and buzzer SP;
One end of relay K coil is connected with described decompression rectifier filter circuit by divider resistance R2, the other end ground connection of relay K-1 coil, in relay K-1, one end of normally opened contact is connected with described divider resistance R2, and in relay K-1, the other end of normally opened contact is connected with one end of described buzzer SP;
The other end ground connection of described buzzer SP.
3. system as claimed in claim 2, it is characterized in that, described overvoltage crowbar comprises:
Adjustable resistance RP1, not circuit 1, not circuit 2 and diode VD3;
The input of described not circuit 1 is connected with the slide plate end of described adjustable resistance RP1, one end of described adjustable resistance RP1 is connected with described power supply, the other end ground connection of described adjustable resistance RP1, the output of described not circuit 1 is connected with described not circuit 2 input;
The input of described not circuit 2 is connected with the output of described not circuit 1, and the output of described not circuit 2 is connected with described diode VD3 anode, and described diode VD3 negative electrode is connected with the VT1 base stage of described triode.
4. system as claimed in claim 3, it is characterized in that, described under-voltage protecting circuit comprises:
Adjustable resistance RP2, not circuit 3 and diode VD4;
The input of described not circuit 3 is connected with the slide plate end of described adjustable resistance RP2, one end of described adjustable resistance RP2 is connected with described power supply, the other end ground connection of described adjustable resistance RP2, the output of described not circuit 3 is connected with the anode of described diode VD4, and described diode VD4 negative electrode is connected with described triode VT1 base stage.
5. system as claimed in claim 4, it is characterized in that, described system also comprises: divider resistance R1, rectifier diode VD1 and filter capacitor C3;
One end of described adjustable resistance RP1 is connected with described power supply and comprises:
One end of described adjustable resistance RP1 is connected with the negative electrode of described rectifier diode VD1, the anode of described rectifier diode VD1 is connected to power supply by described divider resistance R1, one end of described filter capacitor C3 is connected with the negative electrode of described rectifier diode VD1, the other end ground connection of described filter capacitor C3;
One end of described adjustable resistance RP2 is connected with described power supply and comprises:
One end of described adjustable resistance RP2 is connected with the negative electrode of described rectifier diode VD1.
6. system as claimed in claim 5, it is characterized in that, described on-off controller comprises: diode VD2 and relay K-1;
The negative electrode of diode VD2 is connected with described decompression rectifier filter circuit one end, the anode of diode VD2 is connected with the collector electrode of triode VT1, one end of relay K-1 coil is connected with the negative electrode of diode VD2, the other end of relay K-1 coil is connected with the anode of diode VD2, in relay K-1, one end of normally-closed contact connects power supply, and in relay K-1, the other end of normally-closed contact connects load.
7. system as claimed in claim 6, it is characterized in that, described decompression rectifier filter circuit comprises:
Transformer T, rectifier bridge stack BD1, voltage stabilizing triode VT2, filter capacitor C1 and filter capacitor C2;
Armature winding one end of described transformer T is connected with described power supply, the armature winding other end of described transformer T is connected with described power supply, secondary winding one end of described transformer T is connected with one end of described rectifier bridge stack BD input, the other end of the secondary winding of described transformer T is connected with the other end of the input of described rectifier bridge stack BD, the cathode output end of described rectifier bridge stack BD is connected with described voltage stabilizing triode VT2 input, the cathode output end ground connection of described rectifier bridge stack BD;
Described voltage stabilizing triode VT2 input is connected with the cathode output end of described rectifier bridge stack BD, described voltage stabilizing triode VT2 output is connected with the negative electrode of the diode VD2 of described on-off controller with the divider resistance R2 of described alarm controller respectively, described voltage stabilizing triode VT2 earth terminal ground connection;
Described filter capacitor C1 one end is connected with described voltage stabilizing triode VT2 input, described filter capacitor C1 other end ground connection;
Described filter capacitor C2 one end is connected with described voltage stabilizing triode VT2 output, described filter capacitor C2 other end ground connection.
8. system as claimed in claim 7, it is characterized in that, described system also comprises: fuse FR1 and fuse FR2;
Armature winding one end of described transformer T is connected with described power supply and comprises: armature winding one end of described transformer T is connected with described power supply by described fuse FR1;
The armature winding other end of described transformer T is connected with described power supply and comprises: the armature winding other end of described transformer T is connected with described power supply by described fuse FR2.
9. an equipment, described equipment is connected with at least one load to be measured, it is characterized in that, described equipment comprises the alarm and protection system as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294522.2A CN104283183A (en) | 2013-07-12 | 2013-07-12 | Alarm giving protective system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294522.2A CN104283183A (en) | 2013-07-12 | 2013-07-12 | Alarm giving protective system and device |
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| CN104283183A true CN104283183A (en) | 2015-01-14 |
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| CN201310294522.2A Pending CN104283183A (en) | 2013-07-12 | 2013-07-12 | Alarm giving protective system and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283185A (en) * | 2014-10-22 | 2015-01-14 | 四川蓝讯宝迩电子科技有限公司 | Electric supply bothway out-of-limit protection circuit |
| CN107370166A (en) * | 2017-09-08 | 2017-11-21 | 广西邦世电气有限公司 | A kind of power balance device |
-
2013
- 2013-07-12 CN CN201310294522.2A patent/CN104283183A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283185A (en) * | 2014-10-22 | 2015-01-14 | 四川蓝讯宝迩电子科技有限公司 | Electric supply bothway out-of-limit protection circuit |
| CN107370166A (en) * | 2017-09-08 | 2017-11-21 | 广西邦世电气有限公司 | A kind of power balance device |
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Application publication date: 20150114 |