CN210665916U - Signal transmitter - Google Patents
Signal transmitter Download PDFInfo
- Publication number
- CN210665916U CN210665916U CN201921388964.2U CN201921388964U CN210665916U CN 210665916 U CN210665916 U CN 210665916U CN 201921388964 U CN201921388964 U CN 201921388964U CN 210665916 U CN210665916 U CN 210665916U
- Authority
- CN
- China
- Prior art keywords
- voltage
- unit
- voltage current
- low
- surge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a signal transmitter, which belongs to the technical field of signal transmission equipment and comprises a signal transmitter, wherein the signal transmitter comprises a machine body, and a plurality of voltage transmission modules, a plurality of low-voltage current transmission modules and a plurality of high-voltage current transmission modules are arranged in the machine body; the voltage becomes to send the module to include voltage input interface, voltage output interface and first amplification unit, and low voltage current becomes to send the module to include low-voltage current input interface, low-voltage current output interface and second amplification unit, and high-voltage current becomes to send the module to include high-voltage current input interface, high-voltage current output interface, vary voltage unit and third amplification unit, the utility model discloses have and can change the signal of different voltages simultaneously, need not the effect of manual regulation alternating current-direct current transform, voltage range.
Description
Technical Field
The utility model belongs to the technical field of the technique of signal transmission equipment and specifically relates to a signal transmitter is related to.
Background
At present, a signal transmitter is a device for processing various signals, such as temperature signals, current signals, electric quantity signals, etc., and the working principle of the signal transmitter is as follows: firstly, signals of a transmitter or an instrument are modulated and converted through a semiconductor device, then are isolated and converted through a light sensing or magnetic sensing device, then are demodulated and converted back to original signals before isolation, and meanwhile, a power supply of the isolated signals is isolated. And absolute independence among the converted signal, the power supply and the ground is ensured.
The prior art can refer to the chinese utility model patent with the publication number CN201285598, which discloses an ac/dc isolation signal transmitter, which comprises an isolation circuit, a signal amplification/attenuation circuit, a true effective value conversion circuit, a power circuit, and an isolation power circuit, wherein the input ac or dc current signal is isolated, amplified/attenuated by the isolation circuit and the signal amplification/attenuation circuit, and then output after the effective value is calculated by the true effective value conversion circuit.
The above prior art solutions have the following drawbacks: above-mentioned changer can change in the alternating current-direct current circuit, but still can't the simultaneous voltage difference carry out the simultaneous conversion to alternating current-direct current circuit, still need the staff to switch the changer when gathering, wastes time and energy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a signal transmitter can change the signal of different voltages simultaneously, need not artifical regulation alternating current-direct current transform, voltage range.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a signal transmitter comprises a body, wherein a plurality of voltage transmission modules, a plurality of low-voltage current transmission modules and a plurality of high-voltage current transmission modules are arranged in the body;
the voltage transmission modules comprise voltage input interfaces fixedly connected to the machine body and voltage output interfaces fixedly connected to the machine body, and first amplification units for amplifying or attenuating signals are connected between the voltage input interfaces and the voltage output interfaces;
the low-voltage current transmission modules comprise low-voltage current input interfaces fixedly connected to the machine body and low-voltage current output interfaces fixedly connected to the machine body, and second amplification units for amplifying or attenuating signals are connected between the low-voltage current input interfaces and the low-voltage current output interfaces;
the high-voltage current transmission modules comprise high-voltage current input interfaces fixedly connected to the machine body and high-voltage current output interfaces fixedly connected to the machine body, the high-voltage current input interfaces are connected with voltage transformation units used for reducing current and voltage, and third amplification units used for amplifying or attenuating signals are connected between the voltage transformation units and the high-voltage current output interfaces.
By adopting the scheme, when a user uses the signal transmitter, different input interfaces can be selected according to different access signals, the signal transmitter forms different ranges by changing the amplification or attenuation coefficients of the first amplification unit, the second amplification unit and the third amplification unit, the signal transmitter can support signal input of different voltages, alternating currents or direct currents, and even can simultaneously support conversion of high-voltage current signals and low-voltage current signals, and the modules are not connected with one another and cannot influence one another.
The utility model discloses further set up to: a voltage front anti-surge unit for resisting electromagnetic interference is connected between a voltage input interface of the voltage transmission module and the first amplification unit, and a voltage rear anti-surge unit for resisting electromagnetic interference is connected between the first amplification unit and the voltage output interface;
a low-voltage current front anti-surge unit for resisting electromagnetic interference is connected between the low-voltage current input interface of the low-voltage current transmission module and the second amplification unit, and a low-voltage current rear anti-surge unit for resisting electromagnetic interference is connected between the second amplification unit and the low-voltage current output interface;
a high-voltage current front anti-surge unit for resisting electromagnetic interference is connected between the voltage transformation unit and the third amplification unit of the high-voltage current transmission module, and a high-voltage current rear anti-surge unit for resisting electromagnetic interference is connected between the third amplification unit and the high-voltage current output interface.
By adopting the above scheme, surge can be effectively prevented from appearing in the signal transmitter, the safety of equipment components and parts is guaranteed, and the stability of signal transmitter output signal can be improved simultaneously.
The utility model discloses further set up to: the voltage front anti-surge unit comprises a first transient suppression diode and a first common-mode inductor which are connected in parallel; the voltage post-surge-resistant unit comprises a first capacitor, a second common-mode inductor and a second capacitor which are connected in parallel.
By adopting the scheme, the anti-surge unit before voltage can effectively resist surge and the first common mode inductor can effectively reduce electromagnetic interference, and the anti-surge unit after voltage can filter the converted signal and reduce electromagnetic interference at the same time.
The utility model discloses further set up to: the low-voltage current front anti-surge unit comprises a second transient suppression diode and a third common-mode inductor which are connected in parallel; the low-voltage current rear anti-surge unit comprises a third capacitor, a fourth common-mode inductor and a fourth capacitor which are connected in parallel.
By adopting the scheme, the anti-surge unit before the low-voltage current can effectively resist surge and the first common mode inductance can effectively reduce electromagnetic interference, and the anti-surge unit after the low-voltage current can filter the converted signal and reduce the electromagnetic interference at the same time.
The utility model discloses further set up to: the low-voltage current front anti-surge unit comprises a second transient suppression diode and a third common-mode inductor which are connected in parallel; the low-voltage current rear anti-surge unit comprises a third capacitor, a fourth common-mode inductor and a fourth capacitor which are connected in parallel.
By adopting the scheme, the anti-surge unit before the low-voltage current can effectively resist surge and the first common mode inductance can effectively reduce electromagnetic interference, and the anti-surge unit after the low-voltage current can filter the converted signal and reduce the electromagnetic interference at the same time.
The utility model discloses further set up to: the low-voltage current transmission module further comprises a filtering unit connected between the low-voltage current input interface and the low-voltage current front anti-surge unit, and the filtering unit comprises a second resistor and an electrolytic capacitor which are connected in parallel.
By adopting the scheme, the filtering unit can carry out filtering and voltage stabilization on the input signal so as to ensure the stability of the converted signal, and when the signal transmitter converts the low-voltage current, the low-voltage current has no voltage signal stability when entering the signal transmitter, so that the filtering unit is required to carry out filtering and voltage stabilization.
The utility model discloses further set up to: still be provided with test module in the fuselage, test module includes test input interface and the test output interface of fixed connection on the fuselage, and the external test resistance of test input interface is connected with the fourth amplification unit that is used for enlargiing or attenuating the signal between test input interface and the test output interface.
By adopting the scheme, a user can detect the signal transmitter through the test module, so that the signal transmitter can be conveniently overhauled by the user.
The utility model discloses further set up to: the anti-surge unit before being connected with the test between test input interface and the fourth amplification unit of test module, be connected with the anti-surge unit after the test between fourth amplification unit and the test output interface, anti-surge unit includes fourth transient suppression diode and the seventh common mode inductance that connects in parallel each other before the test, and anti-surge unit includes seventh electric capacity, the eighth common mode inductance and the eighth electric capacity that connect in parallel each other after the test.
By adopting the scheme, the test module also needs to carry out anti-surge and anti-electromagnetic interference treatment to ensure that the detection result of the user is accurate.
To sum up, the utility model discloses following beneficial effect has:
1. when a user uses the signal transmitter, different input interfaces can be selected according to different access signals, the signal transmitter forms different ranges by changing the amplification or attenuation coefficients of the first amplification unit, the second amplification unit and the third amplification unit, the signal transmitter can support signal input of different voltages, alternating currents or direct currents, even can simultaneously support conversion of high-voltage current signals and low-voltage current signals, and all modules are not connected and cannot influence each other;
2. the filtering unit can filter and stabilize the input signals to ensure the stability of the converted signals, and when the signal transmitter converts low-voltage current, the low-voltage current has no voltage signal stability when entering the signal transmitter, so the filtering unit is required to filter and stabilize the voltage;
3. the user can detect the signal transmitter through the test module, and the user can conveniently overhaul the signal transmitter.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a schematic diagram of a highlighted voltage output interface, a low-voltage current output interface, a high-voltage current output interface and a test output interface in an embodiment;
FIG. 3 is a schematic circuit diagram of a protruded voltage transmitting module in an embodiment;
FIG. 4 is a schematic circuit diagram of a highlighted low-voltage current transformer module in an embodiment;
FIG. 5 is a schematic circuit diagram of a highlighted high voltage current transformer module in an embodiment;
FIG. 6 is a schematic circuit diagram of a highlighted test module in an embodiment.
In the figure, 1, a fuselage; 2. a voltage transmission module; 21. a voltage input interface; 22. a voltage output interface; 23. a first amplifying unit; 24. a voltage front anti-surge unit; 241. a first transient suppression diode; 242. a first common mode inductor; 25. a post-voltage anti-surge unit; 251. a first capacitor; 252. a second common mode inductor; 253. a second capacitor; 3. a low-voltage current transmitting module; 31. a low-voltage current input interface; 32. a low-voltage current output interface; 33. a second amplifying unit; 34. a low-voltage current front anti-surge unit; 341. a second transient suppression diode; 342. a third common mode inductor; 35. a low-voltage current back surge resistant unit; 351. a third capacitor; 352. a fourth common mode inductor; 353. a fourth capacitor; 36. a filtering unit; 361. a second resistor; 362. an electrolytic capacitor; 4. a high voltage current transmission module; 41. a high voltage current input interface; 42. a high-voltage current output interface; 43. a voltage transformation unit; 44. a third amplification unit; 45. a high-voltage current front anti-surge unit; 451. a third transient suppression diode; 452. a first resistor; 453. a fifth common mode inductor; 46. a high-voltage current back anti-surge unit; 461. a fifth capacitor; 462. a sixth common mode inductor; 463. a sixth capacitor; 5. a test module; 51. testing the input interface; 511. testing the resistance; 52. testing an output interface; 53. a fourth amplifying unit; 54. an anti-surge unit before testing; 541. a fourth transient suppression diode; 542. a seventh common mode inductor; 55. an anti-surge unit after testing; 551. a seventh capacitance; 552. an eighth common mode inductor; 553. and an eighth capacitor.
Detailed Description
Example (b): a signal transmitter is shown in figures 1 and 2 and comprises a machine body 1, wherein six voltage transmission modules 2, a low-voltage current transmission module 3, five high-voltage current transmission modules 4 and a test module 5 are arranged in the machine body 1. The voltage transmission modules 2 each include a voltage input interface 21 fixedly connected to the body 1 and a voltage output interface 22 fixedly connected to the body 1. The low-voltage current transmitting modules 3 each include a low-voltage current input interface 31 fixedly connected to the body 1 and a low-voltage current output interface 32 fixedly connected to the body 1. The high-voltage current transmission modules 4 each include a high-voltage current input interface 41 fixedly connected to the body 1 and a high-voltage current output interface 42 fixedly connected to the body 1. The test module 5 comprises a test input interface 51 fixedly connected to the main body 1 and a test output interface 52 fixedly connected to the main body 1.
As shown in fig. 3, the voltage transmitting module 2 includes a voltage pre-anti-surge unit 24 connected to the voltage input interface 21, and the voltage pre-anti-surge unit 24 includes a first transient suppression diode 241 connected in parallel to the voltage input interface 21 and a first common mode inductor 242 connected in parallel to the first transient suppression diode 241. The first common mode inductor 242 is connected with a first amplifying unit 23, the first amplifying unit 23 comprises a resistor R3 electrically connected to the first common mode inductor 242, a resistor R3 and the common mode inductor are connected in parallel to form a resistor R4, a capacitor C3 is connected in parallel to the resistor R4, one end of the capacitor C3 is grounded, and the other end of the capacitor C3 is electrically connected with an amplifier T1. The amplifier T1 may be an OP177FS type amplifier. The capacitor C3 is electrically connected to the positive input end of the amplifier T1, the negative input end of the amplifier T1 is electrically connected to the resistor R2, and the other end of the resistor R2 is grounded. The negative input end of the amplifier T1 is electrically connected with a resistor R1, and the other end of the resistor R1 is electrically connected with the output end of the amplifier T1. The amplifier T1 is electrically connected to a +12V power supply and a-12V power supply. The +12V power supply is electrically connected with a capacitor C1, and the other end of the capacitor C1 is grounded. The 12V power supply is electrically connected with a capacitor C2, and the other end of the capacitor C2 is grounded. A diode D1 and a diode D2 are connected in series between the +12V power supply and the-12V power supply. The capacitor C3 is electrically connected between the diode D1 and the diode D2 near one end of the amplifier T1. The output end of the amplifier T1 is connected to the post-voltage anti-surge unit 25, and the post-voltage anti-surge unit 25 includes a first capacitor 251 electrically connected to the output end of the amplifier T1, a second common mode inductor 252 connected in parallel to two ends of the first capacitor 251, and a second capacitor 253 connected in parallel to two ends of the second common mode inductor 252. The second capacitor 253 is electrically connected to the voltage output interface 22.
As shown in fig. 4, the low-voltage current transmitting module 3 includes a filtering unit 36 connected to the low-voltage current input interface 31, the filtering unit 36 includes a second resistor 361 connected to the low-voltage current input module in parallel, and an electrolytic capacitor 362 is connected to two ends of the second resistor 361 in parallel. The electrolytic capacitor 362 is connected to the low-voltage current pre-anti-surge unit 34, the low-voltage current pre-anti-surge unit 34 includes a second transient suppression diode 341 connected in parallel to two ends of the electrolytic capacitor 362, and a third common mode inductor 342 is connected in parallel to two ends of the second transient suppression diode 341. The third common mode inductor 342 is connected to the second amplifying unit 33, the second amplifying unit 33 includes a capacitor C6 connected in parallel to two ends of the second common mode inductor 252, one end of the capacitor C6 is grounded, and the other end of the capacitor C6 is electrically connected to the amplifier T2. The amplifier T2 may be an OP177FS type amplifier. The capacitor C6 is electrically connected to the positive input end of the amplifier T1, the negative input end of the amplifier T1 is electrically connected to the resistor R6, and the other end of the resistor R6 is grounded. The negative input end of the amplifier T1 is electrically connected with a resistor R5, and the other end of the resistor R5 is electrically connected with the output end of the amplifier T2. The amplifier T2 is electrically connected to a +12V power supply and a-12V power supply. The +12V power supply is electrically connected with a capacitor C5, and the other end of the capacitor C5 is grounded. The 12V power supply is electrically connected with a capacitor C4, and the other end of the capacitor C4 is grounded. A diode D3 and a diode D4 are connected in series between the +12V power supply and the-12V power supply. The capacitor C6 is electrically connected between the diode D3 and the diode D4 near one end of the amplifier T2. The output end of the amplifier T2 is connected with the low-voltage current post-surge-resistant unit 35. The low-voltage current post-anti-surge unit 35 includes a third capacitor 351 electrically connected to the output terminal of the amplifier T2, a fourth common-mode inductor 352 connected in parallel to two ends of the third capacitor 351, and a fourth capacitor 353 connected in parallel to two ends of the fourth common-mode inductor 352. The fourth capacitor 353 is electrically connected to the low-voltage current output interface 32.
As shown in fig. 5, the high-voltage current transmission module 4 includes a transforming unit 43 connected to the high-voltage current input interface 41, and the transforming unit 43 includes a transformer T connected in parallel to the high-voltage current input interface 41. The other end of the transformer T is connected with a high-voltage current front anti-surge unit 45, the high-voltage current front anti-surge unit 45 comprises a third transient suppression diode 451 connected in parallel with two ends of the transformer T, two ends of the third transient suppression diode 451 are connected in parallel with a first resistor 452, and two ends of the first resistor 452 are connected in parallel with a fifth common mode inductor 453. The other end of the fifth common mode inductor 453 is connected to a third amplifying unit 44, the third amplifying unit 44 includes a capacitor C9 connected in parallel to two ends of the fifth common mode inductor 453, one end of the capacitor C9 is grounded, and the other end of the capacitor C9 is electrically connected to an amplifier T3. The amplifier T3 may be an OP177FS type amplifier. The capacitor C9 is electrically connected to the positive input end of the amplifier T3, the negative input end of the amplifier T3 is electrically connected to the resistor R8, and the other end of the resistor R8 is grounded. The negative input end of the amplifier T3 is electrically connected with a resistor R7, and the other end of the resistor R7 is electrically connected with the output end of the amplifier T3. The amplifier T3 is electrically connected to a +12V power supply and a-12V power supply. The +12V power supply is electrically connected with a capacitor C8, and the other end of the capacitor C8 is grounded. The 12V power supply is electrically connected with a capacitor C7, and the other end of the capacitor C7 is grounded. A diode D5 and a diode D6 are connected in series between the +12V power supply and the-12V power supply. The capacitor C9 is electrically connected between the diode D5 and the diode D6 near one end of the amplifier T3. The output terminal of the amplifier T3 is connected to the high-voltage post-current anti-surge unit 46, and the high-voltage post-current anti-surge unit 46 includes a fifth capacitor 461 electrically connected to the output terminal of the amplifier T3, a sixth common mode inductor 462 connected in parallel to both ends of the fifth capacitor 461, and a sixth capacitor 463 connected in parallel to both ends of the sixth common mode inductor 462. The sixth capacitor 463 is electrically connected to the high voltage current output interface 42.
As shown in fig. 6, the testing module 5 includes a pre-test anti-surge unit 54 connected to the testing input interface 51, the testing input interface 51 is externally connected with a testing resistor 511 of 10kR, the pre-test anti-surge unit 54 includes a fourth transient suppression diode 541 connected in parallel to two ends of the testing input interface 51, and two ends of the fourth transient suppression diode 541 are connected in parallel with a seventh common mode inductor 542. The seventh common mode inductor 542 is connected to the fourth amplifying unit 53, the fourth amplifying unit 53 includes a resistor R10 connected in parallel to two ends of the seventh common mode inductor 542, one end of the resistor R10 is electrically connected to the resistor R9, and the other end of the resistor R10 is grounded. The other end of the resistor R9 is electrically connected with a +12V power supply. The two ends of the resistor R10 are connected in parallel with a capacitor C12, one end of the capacitor C12 is grounded, and the other end of the capacitor C12 is electrically connected with an amplifier T4. The amplifier T4 may be an OP177FS type amplifier. The capacitor C12 is electrically connected to the positive input terminal of the amplifier T4, and the negative input terminal of the amplifier T4 is electrically connected to the output terminal of the amplifier T4. The amplifier T4 is electrically connected to a +12V power supply and a-12V power supply. The +12V power supply is electrically connected with a capacitor C11, and the other end of the capacitor C11 is grounded. The 12V power supply is electrically connected with a capacitor C10, and the other end of the capacitor C10 is grounded. A diode D7 and a diode D8 are connected in series between the +12V power supply and the-12V power supply. The capacitor C12 is electrically connected between the diode D7 and the diode D8 near one end of the amplifier T4. The output end of the amplifier T4 is connected to the post-test anti-surge unit 55, and the post-test anti-surge unit 55 includes a seventh capacitor 551 electrically connected to the output end of the amplifier T4, an eighth common mode inductor 552 connected in parallel to both ends of the seventh capacitor 551, and an eighth capacitor 553 connected in parallel to both ends of the eighth common mode inductor 552. The eighth capacitor 553 is electrically connected to the test output interface 52.
The use method comprises the following steps: when using a signal transmitter, the voltage input interface 21, the low voltage current input interface 31 or the high voltage current input interface 41 can be selected according to requirements. Different interfaces have different ranges and can support signal input of different voltages, alternating current or direct current, so that a user does not need to convert an alternating current circuit and a direct current circuit.
The user can also test the module 5 for faults by testing the 10kR test resistor 511 on the test input interface 51, and the test module 5 for faults.
All modules in the signal transmitter adopt an input and output double-anti-surge design, so that the signal surge phenomenon in a circuit can be effectively reduced.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A signal transmitter, characterized by: the power transmission device comprises a machine body (1), wherein a plurality of voltage transmission modules (2), a plurality of low-voltage current transmission modules (3) and a plurality of high-voltage current transmission modules (4) are arranged in the machine body (1);
the voltage transmission modules (2) respectively comprise a voltage input interface (21) fixedly connected to the machine body (1) and a voltage output interface (22) fixedly connected to the machine body (1), and a first amplification unit (23) used for amplifying or attenuating signals is connected between the voltage input interface (21) and the voltage output interface (22);
the low-voltage current transmission modules (3) respectively comprise a low-voltage current input interface (31) fixedly connected to the machine body (1) and a low-voltage current output interface (32) fixedly connected to the machine body (1), and a second amplification unit (33) used for amplifying or attenuating signals is connected between the low-voltage current input interface (31) and the low-voltage current output interface (32);
the high-voltage current transmission modules (4) comprise high-voltage current input interfaces (41) fixedly connected to the machine body (1) and high-voltage current output interfaces (42) fixedly connected to the machine body (1), the high-voltage current input interfaces (41) are connected with voltage transformation units (43) used for reducing current and voltage, and third amplification units (44) used for amplifying or attenuating signals are connected between the voltage transformation units (43) and the high-voltage current output interfaces (42).
2. The signal transmitter of claim 1, wherein: a voltage front anti-surge unit (24) for resisting electromagnetic interference is connected between a voltage input interface (21) and a first amplifying unit (23) of the voltage transmission module (2), and a voltage rear anti-surge unit (25) for resisting electromagnetic interference is connected between the first amplifying unit (23) and a voltage output interface (22);
a low-voltage current front anti-surge unit (34) for resisting electromagnetic interference is connected between the low-voltage current input interface (31) of the low-voltage current transmission module (3) and the second amplification unit (33), and a low-voltage current rear anti-surge unit (35) for resisting electromagnetic interference is connected between the second amplification unit (33) and the low-voltage current output interface (32);
a high-voltage current front anti-surge unit (45) for resisting electromagnetic interference is connected between a transformation unit (43) and a third amplification unit (44) of the high-voltage current transmission module (4), and a high-voltage current rear anti-surge unit (46) for resisting electromagnetic interference is connected between the third amplification unit (44) and a high-voltage current output interface (42).
3. The signal transmitter of claim 2, wherein: the voltage pre-surge resisting unit (24) comprises a first transient suppression diode (241) and a first common-mode inductor (242) which are connected in parallel; the voltage post-surge-resistant unit (25) comprises a first capacitor (251), a second common-mode inductor (252) and a second capacitor (253) which are connected in parallel.
4. The signal transmitter of claim 2, wherein: the low-voltage current pre-surge resisting unit (34) comprises a second transient suppression diode (341) and a third common-mode inductor (342) which are connected in parallel; the low-voltage current post-surge-resistant unit (35) comprises a third capacitor (351), a fourth common-mode inductor (352) and a fourth capacitor (353) which are connected in parallel.
5. The signal transmitter of claim 2, wherein: the high-voltage current pre-surge-resistant unit (45) comprises a third transient suppression diode (451), a first resistor (452) and a fifth common-mode inductor (453), which are connected in parallel; the high-voltage current post-surge-resistant unit (46) comprises a fifth capacitor (461), a sixth common-mode inductor (462) and a sixth capacitor (463) which are connected in parallel.
6. The signal transmitter of claim 4, wherein: the low-voltage current transmission module (3) further comprises a filtering unit (36) connected between the low-voltage current input interface (31) and the low-voltage current front anti-surge unit (34), and the filtering unit (36) comprises a second resistor (361) and an electrolytic capacitor (362) which are connected in parallel.
7. The signal transmitter of claim 1, wherein: still be provided with test module (5) in fuselage (1), test module (5) are including test input interface (51) and fixed connection test output interface (52) on fuselage (1) of fixed connection on fuselage (1), and test input interface (51) external test resistance (511) are connected with fourth amplification unit (53) that are used for enlarging or attenuate the signal between test input interface (51) and test output interface (52).
8. The signal transmitter of claim 1, wherein: an anti-surge unit (54) before testing is connected between a testing input interface (51) and a fourth amplifying unit (53) of the testing module (5), an anti-surge unit (55) after testing is connected between the fourth amplifying unit (53) and a testing output interface (52), the anti-surge unit (54) before testing comprises a fourth transient suppression diode (541) and a seventh common mode inductor (542) which are connected in parallel, and the anti-surge unit (55) after testing comprises a seventh capacitor (551), an eighth common mode inductor (552) and an eighth capacitor (553) which are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921388964.2U CN210665916U (en) | 2019-08-24 | 2019-08-24 | Signal transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921388964.2U CN210665916U (en) | 2019-08-24 | 2019-08-24 | Signal transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210665916U true CN210665916U (en) | 2020-06-02 |
Family
ID=70809554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921388964.2U Active CN210665916U (en) | 2019-08-24 | 2019-08-24 | Signal transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210665916U (en) |
-
2019
- 2019-08-24 CN CN201921388964.2U patent/CN210665916U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112019039A (en) | Power interface circuit with high-grade surge protection and high EMI performance | |
| US20120014144A1 (en) | Power supplying apparatus | |
| CN106093494A (en) | A kind of signal for electronic mutual inductor protects filter circuit | |
| CN105403759A (en) | Leakage current detection circuit for ADC sampling | |
| CN109946506B (en) | Zero crossing detection system | |
| CN110763909A (en) | Digital display DC meter and voltage sampling circuit thereof | |
| CN109932619B (en) | Secondary signal collector of electronic sensor of power distribution network | |
| CN203759105U (en) | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply | |
| CN204789742U (en) | Voltage sample modulate circuit | |
| CN210665916U (en) | Signal transmitter | |
| CN209676213U (en) | A kind of jamproof multi-channel A/D C acquisition conversion circuit | |
| CN209894959U (en) | High-common-mode-interference-resistance small-signal isolation sampling conditioning circuit of electronic transformer | |
| CN210514514U (en) | Small signal acquisition circuit applied to power distribution terminal | |
| CN202014236U (en) | Input/output isolation module | |
| CN202678082U (en) | Electronic transformer collector with overcurrent and overvoltage prevention function | |
| CN211127565U (en) | Special power filter for EMI alternating current medical equipment | |
| CN205844497U (en) | The filtering of battery core voltage sample synchronizes anti-jamming circuit | |
| US11901733B2 (en) | Hybrid passive power filter and three-phase power system | |
| CN211405467U (en) | Electric power direct current signal acquisition return circuit protection circuit | |
| CN206547079U (en) | A kind of small-signal isolated amplifier with self-calibration function | |
| CN110763910A (en) | Digital display DC meter and current sampling circuit thereof | |
| CN210665938U (en) | Passive signal sampling device | |
| CN114123148B (en) | Aviation three-wire system sensor port protection circuit | |
| CN214281255U (en) | High-voltage AC/DC voltage converter and high-voltage AC/DC voltage conversion system | |
| CN220271425U (en) | Voltage sampling connecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |