CN206710523U - A kind of rated power broadcast wire alignment detection circuit - Google Patents
A kind of rated power broadcast wire alignment detection circuit Download PDFInfo
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- CN206710523U CN206710523U CN201720263096.XU CN201720263096U CN206710523U CN 206710523 U CN206710523 U CN 206710523U CN 201720263096 U CN201720263096 U CN 201720263096U CN 206710523 U CN206710523 U CN 206710523U
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Abstract
The utility model discloses a kind of rated power broadcast wire alignment detection circuit of detection field of circuit technology, including chip U1, the GND ports of the chip U1 are simultaneously connected to ground wire, electric capacity C3 and electric capacity C2, the other end concatenation chip U1 of electric capacity C3 CVOLT ports, the other end of the electric capacity C2 and TRIG, THR port and the resistance R4 for being connected to chip U1, this circuit is detected field load equipment as a global facility, when primary, secondary or loudspeaker occur abnormal, it can correctly judge its state, can apply to all rated power broadcast circuit detections；For program circuit debugging, debug time can be greatlyd save using this circuit, easily judges line status, and the detection function that common detection means can not be realized can be realized；Most application scenario is adapted to by adjusting adjustable resistance W1, there is very strong practicality.
Description
Technical field
Detection field of circuit technology is the utility model is related to, specially a kind of rated power broadcast wire alignment detection circuit.
Background technology
Using universal meter measurement program circuit during common engineering scene circuit investigation, when scene and the load audio amplifier that connects is more
When, because DC impedance is smaller, it can not correctly judge that circuit is to be in " short circuit " or " normal " state using universal meter；And
Measured result is linear transformer primary direct current resistance in audio amplifier, for linear transformer secondary or audio amplifier inside trumpet
The abnormality of appearance can not measure, it is therefore desirable to which repeated detection, efficiency is low, loses time, therefore, I proposes that a kind of level pressure is wide
Broadcast wireline inspection circuit.
Utility model content
The purpose of this utility model is to provide a kind of rated power broadcast wire alignment detection circuit, to solve in above-mentioned background technology
The existing detection mode efficiency proposed is low, the problem of losing time.
To achieve the above object, the utility model provides following technical scheme：A kind of rated power broadcast wire alignment detection circuit, bag
Include chip U1, the GND ports of the chip U1 and the other end concatenation for being connected to ground wire, electric capacity C3 and electric capacity C2, the electric capacity C3
Chip U1 CVOLT ports, the other end of the electric capacity C2 and TRIG, THR port and the resistance R4 for being connected to chip U1, the electricity
Hinder the R4 other end and be connected to chip U1 DIS ports and resistance R1, the other end of the resistance R1 is simultaneously connected to VCC inputs, core
Piece U1 VCC ports and resistance R2, the resistance R2 other end concatenation chip U1 R ports, the Q ports string of the chip U1
Resistance R3 is connected to, the other end of the resistance R3 is simultaneously connected to triode Q1 and Q2 base stage, the colelctor electrode string of the triode Q1
5V control sources are connect, the emitter stage of the triode Q1 is simultaneously connected to electrochemical capacitor E3 positive poles and triode Q2 emitter stage, described
Triode Q2 grounded collector, the negative pole of the electrochemical capacitor E3 are serially connected with field load A ports, the B of the field load
Port is simultaneously connected to resistance R10 and R11, and the other end of the resistance R10 is simultaneously connected to electrochemical capacitor E4 negative poles and electric capacity C5, the electricity
Solution electric capacity E4 positive pole is simultaneously connected to amplifier U3 Non-Inverting Input ports and resistance R9, and the resistance R9's is another
End ground connection, the Inverting Input ports of the amplifier U3 are simultaneously connected to resistance R13 and adjustable resistance W1, the adjustable resistance
The W1 other end is simultaneously connected to the electric capacity C5 other ends, ground wire and the resistance R11 other ends, and the other end of the resistance R13 is simultaneously connected to fortune
U3 Output ports and electric capacity C4 is put, the other end of the electric capacity C4 is simultaneously connected to diode D1 positive poles and diode D2 negative poles,
The positive pole of the diode D2 is simultaneously connected to ground wire, resistance R12 and electric capacity C6, and the other end of the resistance R12 is simultaneously connected to diode
D1 negative pole, the electric capacity C6 other ends, amplifier U2Inverting Input ports and amplifier U2B Non-Inverting Input
Port, the Inverting Input ports of the amplifier U2B are simultaneously connected to resistance R6 and R8, the other end concatenation of the resistance R6
VCC is inputted, the other end ground connection of the resistance R8, the Output ports concatenation light emitting diode D4 negative poles of the amplifier U2B, institute
State light emitting diode D4 positive pole and be connected to resistance R12 and light emitting diode D3 positive poles, the negative pole string of the light emitting diode D3
Amplifier U2A Output ports are connect, the other end of the resistance R12 is simultaneously connected to VCC inputs, amplifier U2A VCC ports and resistance
R5, the other end of the resistance R5 and the Non-Inverting Input ports for being connected to resistance R7 and amplifier U2A, the resistance
The R7 other end and amplifier U2A GND ports are grounded.
Preferably, the adjustable resistance W1 is potentiometer type adjustable resistance.
Preferably, the light emitting diode D3 and D4 is voltage-controlled type light emitting diode.
Compared with prior art, the beneficial effects of the utility model are：It is potentiometer type adjustable electric by adjustable resistance W1
Resistance, its sound construction can be with multi-joint, and service life length, light emitting diode D3 and D4 are voltage-controlled type light emitting diode, its
Common light emitting diode and current-limiting resistance are integrated into making to be integrated, can directly be attempted by both ends of power during use, it is easy to use,
This circuit is detected field load equipment as a global facility, when primary, secondary or loudspeaker occur abnormal, equal energy
Correctly judge its state, can apply to all rated power broadcast circuit detections；For program circuit debugging, using this electricity
Road can greatly save debug time, easily judge line status, and can realize that common detection means can not
The detection function of realization；Most application scenario is adapted to by adjusting adjustable resistance W1, there is very strong practicality.
Brief description of the drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of technical scheme：A kind of rated power broadcast wire alignment detection circuit, including core
Piece U1, the GND ports of the chip U1 and the other end concatenation chip for being connected to ground wire, electric capacity C3 and electric capacity C2, the electric capacity C3
U1 CVOLT ports, the other end of the electric capacity C2 and TRIG, THR port and the resistance R4 for being connected to chip U1, the resistance
The R4 other end and DIS ports and the resistance R1 for being connected to chip U1, the other end of the resistance R1 are simultaneously connected to VCC inputs, chip
U1 VCC ports and resistance R2, the resistance R2 other end concatenation chip U1 R ports, the Q ports string of the chip U1
Resistance R3 is connected to, the other end of the resistance R3 is simultaneously connected to triode Q1 and Q2 base stage, the colelctor electrode string of the triode Q1
5V control sources are connect, the emitter stage of the triode Q1 is simultaneously connected to electrochemical capacitor E3 positive poles and triode Q2 emitter stage, described
Triode Q2 grounded collector, the negative pole of the electrochemical capacitor E3 are serially connected with field load A ports, the B of the field load
Port is simultaneously connected to resistance R10 and R11, and the other end of the resistance R10 is simultaneously connected to electrochemical capacitor E4 negative poles and electric capacity C5, described
Electrochemical capacitor E4 positive pole and Non-Inverting Input ports and the resistance R9 for being connected to amplifier U3, the resistance R9's is another
One end is grounded, and the Inverting Input ports of the amplifier U3 are simultaneously connected to resistance R13 and adjustable resistance W1, the adjustable electric
Hinder the W1 other end and be connected to the electric capacity C5 other ends, ground wire and the resistance R11 other ends, the other end of the resistance R13 is simultaneously connected to
Amplifier U3 Output ports and electric capacity C4, the other end of the electric capacity C4 are simultaneously connected to diode D1 positive poles and diode D2 is born
Pole, the positive pole of the diode D2 are simultaneously connected to ground wire, resistance R12 and electric capacity C6, and the other end of the resistance R12 is simultaneously connected to two
Pole pipe D1 negative pole, the electric capacity C6 other ends, amplifier U2Inverting Input ports and amplifier U2B Non-Inverting
Input ports, the Inverting Input ports of the amplifier U2B are simultaneously connected to resistance R6 and R8, the other end of the resistance R6
VCC inputs, the other end ground connection of the resistance R8 are concatenated, the Output ports concatenation light emitting diode D4 of the amplifier U2B is born
Pole, the positive pole of the light emitting diode D4 are simultaneously connected to resistance R12 and light emitting diode D3 positive poles, the light emitting diode D3's
Negative pole concatenation amplifier U2A Output ports, the other end of the resistance R12 are simultaneously connected to VCC inputs, amplifier U2A VCC ends
Mouth and resistance R5, the other end of the resistance R5 and the Non-Inverting Input ports for being connected to resistance R7 and amplifier U2A,
The other end of the resistance R7 and amplifier U2A GND ports are grounded.
Wherein, the adjustable resistance W1 is potentiometer type adjustable resistance, and its sound construction can be with multi-joint, service life length,
The light emitting diode D3 and D4 is voltage-controlled type light emitting diode, and it integrates common light emitting diode and current-limiting resistance
Making is integrated, and can directly be attempted by both ends of power during use, easy to use.
Operation principle：The circuit is according to field load audio amplifier characteristic, when the timing of signal frequency one, audio amplifier, linear transformer
And loudspeaker input equiva lent impedance is certain, circuit is divided into upper left quarter transmission and lower left quarter receives two parts, upper left quarter transtation mission circuit
Square-wave signal is produced, program circuit is sent to through triode Q1 and Q2 drive circuits；Receiving terminal feeds back the circuit other end
Square-wave signal be amplified, amplifier U3 is delivered in rectification, the processing such as filtering, when program circuit is opened a way, feedback-less square-wave signal,
Amplifier U2A inputs are low level, and amplifier U2B outputs are low, and light emitting diode D4 is lighted；When program circuit short circuit, fed back
Square-wave signal amplitude it is stronger, voltage amplitude exceedes its anode reference voltage after amplifier U3 inputs are rectified, and amplifier U2A is exported
Low, light emitting diode D3 is lighted；As line status is normal, then amplified, rectification, filtered level are between amplifier U2A and U2B
Between reference voltage, light emitting diode D3 and D4 are in OFF state.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of rated power broadcast wire alignment detection circuit, including chip U1, it is characterised in that：The GND ports of the chip U1 simultaneously connect
There are the other end concatenation chip U1 of ground wire, electric capacity C3 and electric capacity C2, electric capacity C3 CVOLT ports, the electric capacity C2's is another
One end and TRIG, THR port and resistance R4, the other end of the resistance R4 and the DIS ends for being connected to chip U1 for being connected to chip U1
Mouth and resistance R1, the other end of the resistance R1 are simultaneously connected to VCC inputs, chip U1 VCC ports and resistance R2, the resistance R2
Other end concatenation chip U1 R ports, the Q ports of the chip U1 are serially connected with resistance R3, and the other end of the resistance R3 is simultaneously
It is connected to triode Q1 and Q2 base stage, the collector series connection 5V control sources of the triode Q1, the transmitting of the triode Q1
Pole and the emitter stage for being connected to electrochemical capacitor E3 positive poles and triode Q2, the grounded collector of the triode Q2, the electrolysis electricity
The negative pole for holding E3 is serially connected with field load A ports, and the B ports of the field load are simultaneously connected to resistance R10 and R11, the resistance
The R10 other end is simultaneously connected to electrochemical capacitor E4 negative poles and electric capacity C5, and the positive pole of the electrochemical capacitor E4 is simultaneously connected to amplifier U3's
Non-InvertingInput ports and resistance R9, the resistance R9 other end are grounded, the amplifier U3's
InvertingInput ports are simultaneously connected to resistance R13 and adjustable resistance W1, and the other end of the adjustable resistance W1 is simultaneously connected to electric capacity
The C5 other ends, ground wire and the resistance R11 other ends, the other end of the resistance R13 and Output ports and the electricity for being connected to amplifier U3
Hold C4, the other end of the electric capacity C4 is simultaneously connected to diode D1 positive poles and diode D2 negative poles, and the positive pole of the diode D2 is simultaneously
It is connected to ground wire, resistance R12 and electric capacity C6, the other end of the resistance R12 and to be connected to diode D1 negative pole, electric capacity C6 another
End, amplifier U2Inverting Input ports and amplifier U2B Non-Inverting Input ports, the amplifier U2B's
Inverting Input ports are simultaneously connected to resistance R6 and R8, the other end concatenation VCC inputs of the resistance R6, the resistance R8
The other end ground connection, the amplifier U2B Output ports concatenation light emitting diode D4 negative poles, the light emitting diode D4 is just
Pole is simultaneously connected to resistance R12 and light emitting diode D3 positive poles, the negative pole concatenation amplifier U2A of light emitting diode D3 Output ends
Mouthful, the other end of the resistance R12 is simultaneously connected to VCC inputs, amplifier U2A VCC ports and resistance R5, and the resistance R5's is another
Hold and be connected to resistance R7 and amplifier U2A Non-Inverting Input ports, the other end and amplifier U2A of the resistance R7
GND ports be grounded.
A kind of 2. rated power broadcast wire alignment detection circuit according to claim 1, it is characterised in that：The adjustable resistance W1 is
Potentiometer type adjustable resistance.
A kind of 3. rated power broadcast wire alignment detection circuit according to claim 1, it is characterised in that：The light emitting diode D3
It is voltage-controlled type light emitting diode with D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720263096.XU CN206710523U (en) | 2017-03-17 | 2017-03-17 | A kind of rated power broadcast wire alignment detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720263096.XU CN206710523U (en) | 2017-03-17 | 2017-03-17 | A kind of rated power broadcast wire alignment detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206710523U true CN206710523U (en) | 2017-12-05 |
Family
ID=60470827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720263096.XU Active CN206710523U (en) | 2017-03-17 | 2017-03-17 | A kind of rated power broadcast wire alignment detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206710523U (en) |
-
2017
- 2017-03-17 CN CN201720263096.XU patent/CN206710523U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 050000 building 7, area a, Optical Valley Science Park, 99 Yuyuan Road, Luquan District, Shijiazhuang City, Hebei Province Patentee after: Shijiazhuang Kaituo Electronic Technology Co.,Ltd. Address before: 050299 building 7, area a, Optical Valley Science Park, 99 Yuyuan Road, Luquan District, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG KAITUO ELECTRONIC TECHNOLOGY ENGINEERING Co. |
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| CP03 | Change of name, title or address |