CN204652313U - A kind of broadcasting power amplifies protective device - Google Patents
A kind of broadcasting power amplifies protective device Download PDFInfo
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- CN204652313U CN204652313U CN201520191339.4U CN201520191339U CN204652313U CN 204652313 U CN204652313 U CN 204652313U CN 201520191339 U CN201520191339 U CN 201520191339U CN 204652313 U CN204652313 U CN 204652313U
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Abstract
The utility model proposes a kind of broadcasting power and amplify protective device; comprise preposition see-saw circuit, power amplification circuit, power-on protection delay circuit and volume gradually large delay circuit; described power amplification circuit is connected with described preposition see-saw circuit and power-on protection delay circuit respectively; described power-on protection delay circuit also respectively with described preposition see-saw circuit and volume gradually large delay circuit be connected, described volume gradually large delay circuit be also connected with described preposition see-saw circuit, for making to start shooting or restart machine at every turn time volume become large gradually.Implement broadcasting power of the present utility model and amplify protective device, there is following beneficial effect: can avoid being not easy to allow people get a fright when larger current impact, prolongation machine life, start.
Description
Technical field
The utility model relates to broadcast world, and particularly a kind of broadcasting power amplifies protective device.
Background technology
At present, broadcasting power amplifier booting moment volume is comparatively large, and this situation is very large to the impact of audio amplifier, and Here it is has larger rush of current to transistor and protector, like this will be very large to the loss of transistor and protector, causes reducing machine life.In addition, if people play music suddenly under the condition of not knowing actual conditions, often scaring is to others, easily allows everybody get a fright.
Utility model content
The technical problems to be solved in the utility model is; have larger current to impact for prior art above-mentioned, reduce machine life, start time easily allow people get a fright defect, provide a kind of larger current can be avoided to impact, extend machine life, start time the broadcasting power that is not easy to allow people get a fright amplify protective device.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of broadcasting power and amplify protective device, comprise preposition see-saw circuit, power amplification circuit, power-on protection delay circuit and volume be large delay circuit gradually, described power amplification circuit is connected with described preposition see-saw circuit and power-on protection delay circuit respectively, described power-on protection delay circuit also respectively with described preposition see-saw circuit and volume gradually large delay circuit be connected, described volume gradually large delay circuit is also connected with described preposition see-saw circuit, during for making to start shooting or restart machine at every turn, volume becomes large gradually.
Amplify in protective device in broadcasting power described in the utility model, described volume gradually large delay circuit comprises the 47 triode, 15 resistance, 7th resistance, 153 resistance, 7th electric capacity, 77 resistance, 26 triode, 31 triode, 72 resistance, 71 resistance, 14 triode, 76 resistance, 15 triode, 125 resistance, 128 resistance, 130 resistance, 6th diode, optocoupler and the first power supply, described optocoupler comprises LED and light-receiving device, the base stage of described 47 triode is connected with described power-on protection delay circuit, the collector electrode of described 47 triode is connected with one end of described 7th electric capacity and one end of the 7th resistance respectively by described 15 resistance, the other end of described 7th resistance is connected with the base stage of described 26 triode, the other end of described 7th resistance is also connected with described first power supply by described 153 resistance, the emitter of described 26 triode is connected with described first power supply by described 77 resistance, the emitter of described 26 triode is also connected with the base stage of described 14 triode, the emitter of described 14 triode is connected with described first power supply by described 71 resistance, the collector electrode of described 14 triode is connected with the base stage of described 31 triode by described 72 resistance, the collector electrode of described 14 triode is also connected with the base stage of described 15 triode by described 76 resistance, the collector electrode of described 15 triode is connected with described first power supply with the 125 resistance by described LED successively, described first power supply is also connected with the base stage of the 6th diode with described 15 triode by described 128 resistance successively, described first power supply is also successively by described 128 resistance and the 130 grounding through resistance, described light-receiving device is connected with described preposition see-saw circuit.
Amplify in protective device in broadcasting power described in the utility model; described volume gradually large delay circuit also comprises the 131 resistance; one end ground connection of described 131 resistance; the other end of described 131 resistance is connected with the base stage of described 15 triode; the other end of described 131 resistance is also connected with the negative electrode of described 6th diode, and the anode of described 6th diode is connected with described first power supply by described 128 resistance.
Amplify in protective device in broadcasting power described in the utility model; described volume gradually large delay circuit also comprises the 34 electric capacity, the 27 resistance and the 42 electric capacity; the base stage of described 15 triode is also by described 34 capacity earth, and the base stage of described 15 triode is also successively by described 27 resistance and the 42 capacity earth.
Amplify in protective device in broadcasting power described in the utility model; described volume gradually large delay circuit also comprises the 73 resistance and the 75 resistance; the collector electrode of described 31 triode is connected with described 75 resistance, and the base stage of described 31 triode is also by described 73 grounding through resistance.
Amplify in protective device in broadcasting power described in the utility model; described volume gradually large delay circuit also comprises the 181 resistance, and the emitter of described 47 triode is connected with described power-on protection delay circuit by described 181 resistance.
Amplify in protective device in broadcasting power described in the utility model, described preposition see-saw circuit comprises inverting amplifier, 8th resistance, 11 resistance, 20 resistance, first electric capacity, 12 electric capacity and the 15 resistance, the inverting input of described inverting amplifier is connected with one end of described light-receiving device by described 11 resistance, the input in the same way of described inverting amplifier is connected with the other end of described light-receiving device by described 8th resistance, described 20 resistance and the first Capacitance parallel connection, one end in parallel is connected with the input in the same way of described inverting amplifier, the other end in parallel is connected with the output of described inverting amplifier, the output of described inverting amplifier is also connected with described power amplification circuit with the 15 resistance by described 12 electric capacity successively.
Amplify in protective device in broadcasting power described in the utility model; described preposition see-saw circuit also comprises the tenth resistance, the 28 resistance and the 11 electric capacity; described inverting amplifier is also by described tenth grounding through resistance; the in-phase input end of described inverting amplifier is also successively by described 8th resistance and the 28 grounding through resistance, and the in-phase input end of described inverting amplifier is also successively by described 8th resistance and the 11 electric capacity connection signal input point.
Amplify in protective device in broadcasting power described in the utility model, described power-on protection delay circuit comprises the 149 resistance, 8th diode, 9th diode, 45 triode, 46 triode and second source, the collector electrode of described 45 triode is connected with described second source by described 9th diode, the collector electrode of described 45 triode is also connected with the base stage of the 8th diode with described 47 triode by described 149 resistance successively, the collector electrode of described 45 triode is also connected with the collector electrode of described 46 triode, the emitter of described 45 triode is connected with the base stage of described 46 triode.
Amplify in protective device in broadcasting power described in the utility model; described 47 triode, the 31 triode, the 15 triode, the 45 triode and the 46 triode are NPN triode, and described 26 triode and the 14 triode are PNP triode.
Implement broadcasting power of the present utility model and amplify protective device; there is following beneficial effect: owing to using preposition see-saw circuit, power amplification circuit, power-on protection delay circuit and volume gradually large delay circuit; volume when gradually large delay circuit is used for making to start shooting at every turn or restart machine volume become large gradually; so just can avoid larger rush of current, so be not easy to allow people get a fright when it can extend machine life, start.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment 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 embodiments more of the present utility model, 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 structural representation that the utility model broadcasting power amplifies in protective device embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Amplify in protective device embodiment in the utility model broadcasting power, its broadcasting power amplifies the structural representation of protective device as shown in Figure 1.In Fig. 1; this broadcasting power is amplified protective device and is comprised preposition see-saw circuit 1, power amplification circuit 2, power-on protection delay circuit 3 and volume gradually large delay circuit 4; power amplification circuit 2 is connected with preposition see-saw circuit 1 and power-on protection delay circuit 3 respectively; power-on protection delay circuit 3 also respectively with preposition see-saw circuit 1 and volume gradually large delay circuit 4 be connected, volume gradually large delay circuit 4 be also connected with preposition see-saw circuit 1, for making to start shooting or restart machine at every turn time volume become large gradually.So just can avoid larger rush of current, so be not easy to allow people get a fright when it can extend machine life, start.
In the present embodiment, volume gradually large delay circuit comprises the 47 triode Q47, 15 resistance R15, 7th resistance R7, 153 resistance R153, 7th electric capacity C7, 77 resistance R77, 26 triode Q26, 31 triode Q31, 72 resistance R72, 71 resistance R71, 14 triode Q14, 76 resistance R76, 15 triode Q15, 125 resistance R125, 128 resistance R128, 130 resistance R130, 6th diode D6, optocoupler PC1 and the first power supply VCC, optocoupler PC1 comprises LED and light-receiving device, the base stage of the 47 triode Q47 is connected with power-on protection delay circuit 3, the collector electrode of the 47 triode Q47 is connected with one end of the 7th electric capacity C7 and one end of the 7th resistance R7 respectively by the 15 resistance R15, the other end of the 7th resistance R7 is connected with the base stage of the 26 triode Q26, the other end of the 7th resistance R7 is also connected with the first power supply VCC by the 153 resistance R153, the emitter of the 26 triode Q26 is connected with the first power supply VCC by the 77 resistance R77, the emitter of the 26 triode Q26 is also connected with the base stage of the 14 triode Q14, the emitter of the 14 triode Q14 is connected with the first power supply VCC by the 71 resistance R71, the collector electrode of the 14 triode Q14 is connected with the base stage of the 31 triode Q31 by the 72 resistance R72, the collector electrode of the 14 triode Q14 is also connected with the base stage of the 15 triode Q15 by the 76 resistance R76, the collector electrode of the 15 triode Q15 is connected with the first power supply VCC with the 125 resistance R125 by LED successively, first power supply VCC is also connected with the base stage of the 15 triode Q15 with the 6th diode D6 by the 128 resistance R128 successively, first power supply VCC is also successively by the 128 resistance R128 and the 130 resistance R130 ground connection, light-receiving device is connected with preposition see-saw circuit 1.
In the present embodiment, volume gradually large delay circuit 4 also comprises the 131 resistance R131, one end ground connection of the 131 resistance R131, the other end of the 131 resistance R131 is connected with the base stage of the 15 triode Q15, the other end of the 131 resistance R131 is also connected with the negative electrode of the 6th diode D6, and the anode of the 6th diode D6 is connected with the first power supply VCC by the 128 resistance R128.
In the present embodiment, volume gradually large delay circuit 4 also comprises the 34 electric capacity C34, the 27 resistance R27 and the 42 electric capacity C42, the base stage of the 15 triode Q15 is also by the 34 electric capacity C34 ground connection, and the base stage of the 15 triode Q15 is also successively by the 27 resistance R27 and the 42 electric capacity C42 ground connection.
In the present embodiment, volume gradually large delay circuit also comprises the 73 resistance R73 and the 75 resistance R75, the collector electrode of the 31 triode Q31 is connected with the 75 resistance R75, and the base stage of the 31 triode Q31 is also by the 73 resistance R73 ground connection.In the present embodiment, volume gradually large delay circuit 4 also comprises the 181 resistance R181, and the emitter of the 47 triode Q47 is connected with power-on protection delay circuit 3 by the 181 resistance R181.
In the present embodiment, preposition see-saw circuit 1 comprises inverting amplifier U3, 8th resistance R8, 11 resistance R11, 20 resistance R20, first electric capacity C1, 12 electric capacity C12 and the 15 resistance R15, the inverting input of inverting amplifier U3 is connected with one end of light-receiving device by the 11 resistance R11, the input in the same way of inverting amplifier U3 is connected with the other end of light-receiving device by the 8th resistance R8, 20 resistance R20 and the first electric capacity C1 is in parallel, one end in parallel is connected with the input in the same way of inverting amplifier U3, the other end in parallel is connected with the output of inverting amplifier U3, the output of inverting amplifier U3 is also connected with power amplification circuit 2 with the 15 resistance R15 by the 12 electric capacity C12 successively.
In the present embodiment, preposition see-saw circuit 1 also comprises the tenth resistance R10, the 28 resistance R28 and the 11 electric capacity C11, inverting amplifier U3 is also by the tenth resistance R10 ground connection, the in-phase input end of inverting amplifier U3 is also successively by the 8th resistance R8 and the 28 resistance R28 ground connection, and the in-phase input end of inverting amplifier U3 is also successively by the 8th resistance R8 and the 11 electric capacity C11 connection signal input point A1.
In the present embodiment, power-on protection delay circuit 3 comprises the 149 resistance R149, 8th diode D8, 9th diode D9, 45 triode Q45, 46 triode Q46 and second source VDD, the collector electrode of the 45 triode Q45 is connected with second source VDD by the 9th diode D9, the collector electrode of the 45 triode Q45 is also connected with the base stage of the 47 triode Q47 with the 8th diode D8 by the 149 resistance R149 successively, the collector electrode of the 45 triode Q45 is also connected with the collector electrode of the 46 triode Q46, the emitter of the 45 triode Q45 is connected with the base stage of the 46 triode Q46.
It is worth mentioning that, in the present embodiment, 47 triode Q47, the 31 triode Q31, the 15 triode Q15, the 45 triode Q45 and the 46 triode Q46 are NPN triode, and the 26 triode Q26 and the 14 triode Q14 is PNP triode.
In the present embodiment, when machine is started shooting or restarted at every turn, the level of signal input point A1 is very high (approximating 24V), as the level >=1.4V of signal input point A1, then after the 149 resistance R149 and the 8th diode D8 successively, the base level of the 47 triode Q47 is 0.7V, then the 47 triode Q47 conducting, when the 47 triode Q47 works, when the emitter voltage of the 26 triode Q26 is higher than its base voltage 0.7V, then the 26 triode Q26 conducting thereupon, when the 26 triode Q26 is in ON operation state, when the emitter voltage of the 14 triode Q14 is higher than its base voltage 0.7V, then the 14 triode Q14 conducting, when the 14 triode Q14 conducting, the base stage of the 15 triode Q15 is high level, it is now conducting state, during the 15 triode Q15 conducting, electric current flows to optocoupler PC1 through the 125 resistance R125, by optocoupler PC1, inverting amplifier U3, tenth resistance R10 and the 11 resistance R11 realizes the signal input of the in-phase input end controlling inverting amplifier U3, when the signal magnitude of the in-phase input end of inverting amplifier U3 controls as size the same as the signal of its inverting input, the output no signal of inverting amplifier U3 exports, then power amplification circuit 2 no-output.
After each machine start 5-6 second, the level of signal input point A1 can drop to 0.7V, when the level of signal input point A1 is lower than 1.4V, 47 triode Q47 not conducting, before start, 5-6 triode Q47 second the 47 is conducting state, discharge also to while the 47 triode Q47 conducting the 7th electric capacity C7, after a few second of starting shooting, 47 triode Q47 is cut-off state, 7th electric capacity C7 is slowly charged by the 153 resistance R153 and the 7th resistance R7, in charging process, 26 triode Q26 is in conduction status, after two seconds, the 7th electric capacity C7 charges complete, then the 26 triode Q26 slowly transfers saturated cut-off state to by conducting state, when the 26 triode Q26 ends, 14 triode Q14 is also cut-off, when 14 triode Q14 ends, 15 triode Q15 is also cut-off, when 15 triode Q15 ends, optocoupler PC1 no current passes through, now optocoupler PC1 does not work, in the idle situation of optocoupler PC1, the signal magnitude of the in-phase input end of inverting amplifier U3 and the signal magnitude of its inverting input different, then inverting amplifier U3U3 is that anti-phase amplification exports, so just achieve volume gradually large function when at every turn starting shooting.
In a word, in the present embodiment, after improvement; each start or when restarting machine volume gradually large, be slowly upgraded to large-signal by small-signal, everybody would not be made so easily to get a fright; it also avoid the heavy current impact to transistor and protector simultaneously, thus effectively extend machine life.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. a broadcasting power amplifies protective device; it is characterized in that; comprise preposition see-saw circuit, power amplification circuit, power-on protection delay circuit and volume gradually large delay circuit; described power amplification circuit is connected with described preposition see-saw circuit and power-on protection delay circuit respectively; described power-on protection delay circuit also respectively with described preposition see-saw circuit and volume gradually large delay circuit be connected, described volume gradually large delay circuit be also connected with described preposition see-saw circuit, for making to start shooting or restart machine at every turn time volume become large gradually.
2. broadcasting power according to claim 1 amplifies protective device, it is characterized in that, described volume gradually large delay circuit comprises the 47 triode, 15 resistance, 7th resistance, 153 resistance, 7th electric capacity, 77 resistance, 26 triode, 31 triode, 72 resistance, 71 resistance, 14 triode, 76 resistance, 15 triode, 125 resistance, 128 resistance, 130 resistance, 6th diode, optocoupler and the first power supply, described optocoupler comprises LED and light-receiving device, the base stage of described 47 triode is connected with described power-on protection delay circuit, the collector electrode of described 47 triode is connected with one end of described 7th electric capacity and one end of the 7th resistance respectively by described 15 resistance, the other end of described 7th resistance is connected with the base stage of described 26 triode, the other end of described 7th resistance is also connected with described first power supply by described 153 resistance, the emitter of described 26 triode is connected with described first power supply by described 77 resistance, the emitter of described 26 triode is also connected with the base stage of described 14 triode, the emitter of described 14 triode is connected with described first power supply by described 71 resistance, the collector electrode of described 14 triode is connected with the base stage of described 31 triode by described 72 resistance, the collector electrode of described 14 triode is also connected with the base stage of described 15 triode by described 76 resistance, the collector electrode of described 15 triode is connected with described first power supply with the 125 resistance by described LED successively, described first power supply is also connected with the base stage of the 6th diode with described 15 triode by described 128 resistance successively, described first power supply is also successively by described 128 resistance and the 130 grounding through resistance, described light-receiving device is connected with described preposition see-saw circuit.
3. broadcasting power according to claim 2 amplifies protective device; it is characterized in that; described volume gradually large delay circuit also comprises the 131 resistance; one end ground connection of described 131 resistance; the other end of described 131 resistance is connected with the base stage of described 15 triode; the other end of described 131 resistance is also connected with the negative electrode of described 6th diode, and the anode of described 6th diode is connected with described first power supply by described 128 resistance.
4. broadcasting power according to claim 3 amplifies protective device; it is characterized in that; described volume gradually large delay circuit also comprises the 34 electric capacity, the 27 resistance and the 42 electric capacity; the base stage of described 15 triode is also by described 34 capacity earth, and the base stage of described 15 triode is also successively by described 27 resistance and the 42 capacity earth.
5. broadcasting power according to claim 4 amplifies protective device; it is characterized in that; described volume gradually large delay circuit also comprises the 73 resistance and the 75 resistance; the collector electrode of described 31 triode is connected with described 75 resistance, and the base stage of described 31 triode is also by described 73 grounding through resistance.
6. broadcasting power according to claim 5 amplifies protective device; it is characterized in that; described volume gradually large delay circuit also comprises the 181 resistance, and the emitter of described 47 triode is connected with described power-on protection delay circuit by described 181 resistance.
7. the broadcasting power according to claim 2 to 6 any one amplifies protective device, it is characterized in that, described preposition see-saw circuit comprises inverting amplifier, 8th resistance, 11 resistance, 20 resistance, first electric capacity, 12 electric capacity and the 15 resistance, the inverting input of described inverting amplifier is connected with one end of described light-receiving device by described 11 resistance, the input in the same way of described inverting amplifier is connected with the other end of described light-receiving device by described 8th resistance, described 20 resistance and the first Capacitance parallel connection, one end in parallel is connected with the input in the same way of described inverting amplifier, the other end in parallel is connected with the output of described inverting amplifier, the output of described inverting amplifier is also connected with described power amplification circuit with the 15 resistance by described 12 electric capacity successively.
8. broadcasting power according to claim 7 amplifies protective device; it is characterized in that; described preposition see-saw circuit also comprises the tenth resistance, the 28 resistance and the 11 electric capacity; described inverting amplifier is also by described tenth grounding through resistance; the in-phase input end of described inverting amplifier is also successively by described 8th resistance and the 28 grounding through resistance, and the in-phase input end of described inverting amplifier is also successively by described 8th resistance and the 11 electric capacity connection signal input point.
9. the broadcasting power according to claim 2 to 6 any one amplifies protective device, it is characterized in that, described power-on protection delay circuit comprises the 149 resistance, 8th diode, 9th diode, 45 triode, 46 triode and second source, the collector electrode of described 45 triode is connected with described second source by described 9th diode, the collector electrode of described 45 triode is also connected with the base stage of the 8th diode with described 47 triode by described 149 resistance successively, the collector electrode of described 45 triode is also connected with the collector electrode of described 46 triode, the emitter of described 45 triode is connected with the base stage of described 46 triode.
10. broadcasting power according to claim 9 amplifies protective device; it is characterized in that; described 47 triode, the 31 triode, the 15 triode, the 45 triode and the 46 triode are NPN triode, and described 26 triode and the 14 triode are PNP triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191339.4U CN204652313U (en) | 2015-03-31 | 2015-03-31 | A kind of broadcasting power amplifies protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191339.4U CN204652313U (en) | 2015-03-31 | 2015-03-31 | A kind of broadcasting power amplifies protective device |
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| Publication Number | Publication Date |
|---|---|
| CN204652313U true CN204652313U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520191339.4U Withdrawn - After Issue CN204652313U (en) | 2015-03-31 | 2015-03-31 | A kind of broadcasting power amplifies protective device |
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| CN (1) | CN204652313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796093A (en) * | 2015-03-31 | 2015-07-22 | 广州市番禺区西派电子电器厂（普通合伙） | Broadcasting power amplification protecting device |
-
2015
- 2015-03-31 CN CN201520191339.4U patent/CN204652313U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796093A (en) * | 2015-03-31 | 2015-07-22 | 广州市番禺区西派电子电器厂（普通合伙） | Broadcasting power amplification protecting device |
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Effective date of registration: 20171109 Address after: 510000 Guangdong city of Guangzhou province Panyu District Nan Cun Zhen Zhang Bian Cun road for the people by British Gang Sha Industrial Zone No. 2 Room 101 Patentee after: Guangzhou City West sent electronic Polytron Technologies Inc Address before: 511442 Guangdong city of Guangzhou province Panyu District Nan Cun Zhen Zhang Bian Cun Shaheen Gang Industrial Zone No. 2 south of all Patentee before: GUANGZHOU CITY FANYU DISTRICT CEOPA ELECTRONIC FACTORY (GENERAL PARTNERSHIP) |
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