CN215828088U - Signal processing circuit of hoister - Google Patents
Signal processing circuit of hoister Download PDFInfo
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- CN215828088U CN215828088U CN202122439799.2U CN202122439799U CN215828088U CN 215828088 U CN215828088 U CN 215828088U CN 202122439799 U CN202122439799 U CN 202122439799U CN 215828088 U CN215828088 U CN 215828088U
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Abstract
The utility model provides a signal processing circuit of a lifter, which effectively solves the problem that the accuracy of a wireless signal is reduced because a processing circuit is not arranged aiming at the wireless signal in the prior art, and further the situation that a master control system analyzes the wireless signal to generate errors is generated.
Description
Technical Field
The utility model relates to the field of detection of hoists, in particular to a signal processing circuit of a hoist.
Background
The lifting machine, be the common mechanical structure who reciprocates the goods, often in building site, the pier, workshop etc. ground, for people's work provides very big facility, as shown in fig. 1, wherein 1 is the support, 2 is the leading wheel, 3 is the cable, 4 are the weight frame, 5 are the hoisting frame, 6 are actuating mechanism, 7 are the balancing weight, and in order to guarantee the efficiency of lifting machine more, detect the lifting machine if including laser ranging sensor, current sensor etc. for the lifting machine has set up multiple sensor.
The prior art has set up detecting system, detecting system transmits the distance signal that laser rangefinder sensor gathered to data communication circuit, data communication circuit turns into wireless signal with distance signal, and transmit wireless signal to main control system through wireless communication module and carry out the analysis, but because the electromagnetic environment in the air is complicated, if transmitting other signals to the wireless sensor transmission including hall current sensor of lifting machine setting, this type of signal mixes in wireless signal, then can cause the accuracy decline of the wireless signal that wireless communication module received, and then lead to the condition that main control system appears the mistake to wireless signal's analysis.
The present invention therefore provides a new solution to this problem.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a signal processing circuit of a hoister, which effectively solves the problem that the accuracy of a wireless signal is reduced because the processing circuit is not arranged for the wireless signal in the prior art, and further the situation that the master control system analyzes the wireless signal wrongly is caused.
The technical scheme includes that the signal processing circuit of the elevator comprises a signal calibration circuit and a signal output circuit, the signal calibration circuit transmits wireless signals transmitted by a data communication circuit to the signal output circuit after passing through a filter and a frequency selector, and the signal output circuit transmits the wireless signals to a wireless communication module after passing through a frequency modulator and a voltage stabilizer.
Further, the signal calibration circuit comprises a filter and a frequency selector, the filter receives the wireless signal transmitted by the data communication circuit, the wireless signal is transmitted to the frequency selector after being filtered by the filter for frequency selection, and the frequency selector transmits the wireless signal to the signal output circuit.
Furthermore, the filter includes an inductor L1, one end of the inductor L1 is connected to the data communication circuit, the other end of the inductor L1 is connected to one end of a resistor R1, the anode of a varactor diode D1, one end of a capacitor C1, and the other end of a resistor R1 are connected to the non-inverting terminal of an operational amplifier U1B, and the inverting terminal of the operational amplifier U1B is connected to one end of a resistor R14, the other end of the resistor R14 is connected to the output terminal of the operational amplifier U1B and one end of a variable resistor R19, the other end of the variable resistor R19 is connected to one end of a capacitor C2 and the base of a transistor Q2, the collector of the transistor Q2 is connected to one end of a resistor R6, the other end of the resistor R6 is connected to a positive power supply VCC, and the emitter of the transistor Q2 is connected to the other end of the capacitor C1 and the cathode of the varactor diode D1 and connected to ground.
Furthermore, the frequency selector comprises a resistor R3, one end of a resistor R3 is respectively connected with one end of a capacitor C3 and the other end of a capacitor C2 in the filter, the other end of the resistor R3 is respectively connected with one end of a resistor R4 and one end of a capacitor C5, the other end of the capacitor C3 is respectively connected with one end of a resistor R7 and one end of a capacitor C4, the other end of the resistor R4 is respectively connected with one end of a capacitor C4 and one end of a capacitor C6, one end of a capacitor C7, an emitter of a triode Q1, a collector of a triode Q1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with the other end of a resistor R6 in the filter and is connected with a positive power supply VCC, a base of a triode Q1 is connected with a collector of a triode Q2 in the filter, and the other end of the capacitor C6 is respectively connected with the other end of a capacitor C5, the other end of the resistor R7 and the other end of a capacitor C1 in the filter and is connected with the ground in parallel.
Furthermore, the signal output circuit comprises a frequency modulator and a voltage stabilizer, the frequency modulator modulates the frequency of the wireless signal transmitted by the signal calibration circuit, and the voltage stabilizer stabilizes the voltage of the wireless signal and transmits the stabilized voltage to the wireless communication module.
Furthermore, the frequency modulator includes a resistor R9, one end of the resistor R9 is connected to one end of a resistor R15, a base of a transistor Q6, and the other end of a capacitor C7 in the signal calibration circuit, a collector of a transistor Q6 is connected to one end of a resistor R8, one end of a capacitor C14, one end of an inductor L2, and one end of a capacitor C8, the other end of the inductor L2 is connected to the other end of a capacitor C14, the other end of the resistor R8, the other end of a resistor R9, and the other end of a resistor R2 in the signal calibration circuit are connected to a positive power source VCC, an emitter of the transistor Q6 is connected to one end of a resistor R10, the other end of a capacitor C8, and one end of a capacitor C9, and the other end of a capacitor C9 is connected to the other end of a resistor R10, the other end of a resistor R15, and the other end of a capacitor C6 in the signal calibration circuit are connected in parallel to ground.
Further, the voltage stabilizer comprises a triode Q4, the collector of the triode Q4 is respectively connected with one end of a resistor R16 and one end of a capacitor C8 in the frequency modulator, the base of the triode Q4 is respectively IE connected with the other end of the resistor R16 and the negative electrode of a voltage regulator tube D2, the positive electrode of the voltage regulator tube D2 is respectively connected with one end of the resistor R12, one end of a capacitor C10 and the control electrode of a thyristor Q5, the anode of the thyristor Q5 is respectively connected with the emitter of the triode Q4 and the base of the triode Q3, the collector of the triode Q3 is connected with one end of the resistor R17, the other end of the resistor R17 is connected with the other end of the resistor R8 in the frequency modulator and is connected with a positive power supply VCC, the emitter of the triode Q3 is respectively connected with one end of a resistor R18 and one end of the capacitor C13, the other end of the capacitor C13 is respectively connected with one end of a capacitor C11 and one end of an inductor L3, and the other end of the inductor L3 is respectively connected with one end of the capacitor C12, In the wireless communication module, the other end of the capacitor C12 is respectively connected with one end of a capacitor C11, the other end of a resistor R18, the cathode of a thyristor Q5, the other end of a capacitor C10, the other end of a resistor R12 and the other end of a resistor R10 in the frequency modulator and is connected with the ground in parallel.
The utility model realizes the following beneficial effects:
the wireless signal is provided with the signal calibration circuit and the signal output circuit, clutter in the wireless signal transmitted from the data communication circuit is filtered by using the filter and the frequency selector in the signal calibration circuit, the phenomenon that the accuracy of the wireless signal received by the wireless communication module is reduced and the analysis of the wireless signal by the main control system is wrong if other signals transmitted by a wireless sensor which is arranged aiming at a lifting machine and comprises a Hall current sensor are transmitted due to the complex electromagnetic environment in the air is avoided, in order to increase the anti-interference capability of the wireless signal, the frequency modulator is used for modulating the frequency of the wireless signal, the accuracy of the wireless signal is increased, the voltage stabilizer is arranged for avoiding the frequency selector from amplifying the wireless signal too much, and the voltage stabilizing tube is used for detecting and releasing the wireless signal, and also avoids causing the surge phenomenon of the wireless communication module.
Drawings
Fig. 1 is a schematic structural diagram of a hoist.
Fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
The foregoing and other technical and functional aspects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
A signal processing circuit of a hoisting machine is applied to a detection system of the hoisting machine and comprises a signal calibration circuit and a signal output circuit, wherein the signal calibration circuit comprises a filter and a frequency selector, the filter receives a wireless signal by using an inductor L1, a variable capacitance diode D1 and a capacitor C1, filters the wireless signal, transmits the wireless signal to an operational amplifier U1B by using a resistor R1 for follow-up processing and transmits the wireless signal to the frequency selector, the frequency selector transmits the wireless signal to a resistor R3, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a capacitor C5 and a triode Q3 through a variable resistor R19 and a capacitor C2, selects the frequency of the wireless signal, and amplifies the wireless signal after frequency selection by the triode Q2 and the triode Q3, the capacitor C7 transmits a wireless signal to the signal output circuit, the signal output circuit comprises a frequency modulator and a voltage stabilizer, the frequency modulator utilizes the triode Q6, the capacitor C1, the inductor L2, the capacitor C8 and the capacitor C9 to modulate the frequency of the wireless signal so as to increase the anti-jamming capability of the wireless signal and avoid the influence of other signals on the wireless signal, then the wireless signal is transmitted to the voltage stabilizer, in order to avoid the surge phenomenon of a wireless transmission module caused by the overlarge amplitude value of the wireless signal, the triode Q4 and the voltage stabilizing tube D2 are utilized to detect the amplitude value of the wireless signal, when the voltage stabilizing tube D2 is conducted, the triode Q2 and the triode Q1 in the signal calibration circuit are indicated to amplify the wireless signal to be overlarge, the voltage stabilizing tube D2 conducts the thyristor Q5 through the resistor R12 and the capacitor C10, the thyristor Q5 discharges the overlarge part of the wireless signal to the ground, and utilizes the triode Q3 to follow the wireless signal, in order to enable the wireless signals to be transmitted to the wireless communication module without loss, the capacitors C13 are used for transmitting the wireless signals to the electric welding L3, the capacitors C11 and the capacitors C12 for impedance matching, and finally the wireless signals are transmitted to the wireless communication module;
the signal calibration circuit comprises a filter and a frequency selector, wherein the filter receives a wireless signal by using an inductor L1, a varactor D1 and a capacitor C1, filters the wireless signal, transmits the wireless signal to an operational amplifier U1B by using a resistor R1 for follow-up processing so as to improve the driving capability of the wireless signal, transmits the wireless signal to the frequency selector, transmits the wireless signal to a resistor R3, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a capacitor C5 and a triode Q3 after passing through a variable resistor R19 and a capacitor C2, selects the frequency of the wireless signal, and avoids the problem that the accuracy of the wireless signal received by the wireless communication module is reduced due to the complicated electromagnetic environment in the air when the wireless signal is transmitted by other wireless sensors including a Hall current sensor arranged for a hoisting machine, wherein the signals are mixed in the wireless signal, the situation that the master control system analyzes the wireless signals incorrectly is caused, clutter in the wireless signals transmitted from the data communication circuit is filtered, the triode Q2 and the triode Q3 amplify the wireless signals subjected to frequency selection, and therefore the phenomenon that the loss of the wireless signals caused by frequency selection is too large is avoided, and the capacitor C7 transmits the wireless signals to the signal output circuit;
the filter comprises an inductor L1, one end of an inductor L1 and a data communication circuit, the other end of an inductor L1 is respectively connected with one end of a resistor R1, the anode of a variable-capacitance diode D1, one end of a capacitor C1 and the other end of a resistor R1, the in-phase end of an operational amplifier U1B and the reverse-phase end of the operational amplifier U1B are respectively connected with one end of a resistor R14, the other end of the resistor R14 is respectively connected with the output end of the operational amplifier U1B and one end of a variable resistor R19, the other end of the variable resistor R19 is respectively connected with one end of the capacitor C2 and the base of a triode Q2, the collector of the triode Q2 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with a positive-polarity power supply VCC, the emitter of the triode Q2 is respectively connected with the other end of the capacitor C1 and the cathode of the variable-capacitance diode D1 is grounded;
the frequency selector comprises a resistor R3, one end of a resistor R3 is connected with one end of a capacitor C3 and the other end of a capacitor C2 in the filter respectively, the other end of the resistor R3 is connected with one end of a resistor R4 and one end of a capacitor C5 respectively, the other end of the capacitor C3 is connected with one end of a resistor R7 and one end of a capacitor C4 respectively, the other end of the resistor R4 is connected with one end of a capacitor C4, one end of the capacitor C6, one end of a capacitor C7 and an emitter of a triode Q1 respectively, a collector of the triode Q1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with the other end of a resistor R6 in the filter and connected with a positive power supply VCC, a base of a triode Q1 is connected with a collector of a triode Q2 in the filter, and the other end of a capacitor C6 is connected with the other end of a capacitor C5, the other end of a resistor R7 and the other end of a capacitor C1 in the filter and connected in parallel to ground;
the signal output circuit comprises a frequency modulator and a voltage stabilizer, the frequency modulator utilizes a triode Q6, a capacitor C1, an inductor L2, a capacitor C8 and a capacitor C9 to modulate frequency of wireless signals so as to increase the anti-jamming capability of the wireless signals and avoid the influence of other signals on the wireless signals, a resistor R9 and a resistor 15 provide proper bias voltage for a triode Q6, then the wireless signals are transmitted to the voltage stabilizer, in order to avoid the surge phenomenon of a wireless transmission module caused by overlarge amplitude of the wireless signals, the amplitude of the wireless signals is detected by utilizing a triode Q4 and a voltage stabilizing tube D2, when a voltage stabilizing tube D2 is conducted, the situation that the triode Q2 and a triode Q1 in the signal calibration circuit amplify the wireless signals is overlarge is shown, the voltage stabilizing tube D2 conducts a thyristor Q5 through a resistor R12 and a capacitor C10, the thyristor Q5 discharges the overlarge part of the wireless signals to the ground, and utilizes the triode Q3 to follow the wireless signals, in order to enable the wireless signals to be transmitted to the wireless communication module without loss, the capacitors C13 are used for transmitting the wireless signals to the electric welding L3, the capacitors C11 and the capacitors C12 for impedance matching, and finally the wireless signals are transmitted to the wireless communication module;
the frequency modulator comprises a resistor R9, one end of a resistor R9 is connected with one end of a resistor R15, the base of a triode Q6 and the other end of a capacitor C7 in a signal calibration circuit respectively, the collector of a triode Q6 is connected with one end of a resistor R8, one end of a capacitor C14, one end of an inductor L2 and one end of a capacitor C8 respectively, the other end of the inductor L2 is connected with the other end of a capacitor C14, the other end of the resistor R8, the other end of a resistor R9 and the other end of a resistor R2 in the signal calibration circuit and connected with a positive power supply VCC, the emitter of the triode Q6 is connected with one end of a resistor R10, the other end of a capacitor C8 and one end of a capacitor C9 respectively, the other end of a capacitor C9 is connected with the other end of a resistor R10, the other end of a resistor R15 and the other end of a capacitor C6 in the signal calibration circuit and connected with the ground in parallel;
the voltage stabilizer comprises a triode Q4, the collector of a triode Q4 is respectively connected with one end of a resistor R16 and one end of a capacitor C8 in the frequency modulator, the base of a triode Q4 is respectively IE connected with the other end of a resistor R16 and the negative electrode of a voltage-stabilizing tube D2, the positive electrode of the voltage-stabilizing tube D2 is respectively connected with one end of a resistor R12, one end of a capacitor C10 and the control electrode of a thyristor Q5, the anode of the thyristor Q5 is respectively connected with the emitter of a triode Q4 and the base of a triode Q3, the collector of a triode Q3 is connected with one end of a resistor R17, the other end of the resistor R17 is connected with the other end of a resistor R8 in the frequency modulator and is connected with a positive power supply VCC, the emitter of a triode Q3 is respectively connected with one end of a resistor R18 and one end of a capacitor C13, the other end of a capacitor C13 is respectively connected with one end of a capacitor C11 and one end of an inductor L3, and the other end of an inductor L3 is respectively connected with one end of a capacitor C12 and a wireless communication module, the other end of the capacitor C12 is connected with one end of the capacitor C11, the other end of the resistor R18, the cathode of the thyristor Q5, the other end of the capacitor C10, the other end of the resistor R12 and the other end of the resistor R10 in the frequency modulator in parallel and connected with the ground.
When the frequency-selecting type wireless signal calibration circuit is used, the signal calibration circuit comprises a filter and a frequency selector, the filter receives a wireless signal by using an inductor L1, a variable capacitance diode D1 and a capacitor C1, filters the wireless signal, transmits the wireless signal to an operational amplifier U1B by using a resistor R1 for follow-up processing, and transmits the wireless signal to the frequency selector, the frequency selector transmits the wireless signal to a resistor R3, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a capacitor C5 and a triode Q3 after passing through a variable resistor R19 and a capacitor C2, selects the frequency of the wireless signal, a triode Q2 and a triode Q3 amplify the frequency-selected wireless signal, the capacitor C7 transmits the wireless signal to a signal output circuit, the signal output circuit comprises a frequency modulator and a triode Q6, and the frequency modulator utilizes the triode Q6, The capacitor C1, the inductor L2, the capacitor C8 and the capacitor C9 are used for carrying out frequency modulation on wireless signals so as to increase the anti-jamming capability of the wireless signals and avoid the influence of other signals on the wireless signals, then the wireless signals are transmitted to the voltage stabilizer, in order to avoid the surge phenomenon of the wireless transmission module caused by the overlarge amplitude of the wireless signals, the amplitude of the wireless signals is detected by using the triode Q4 and the voltage stabilizer D2, when the voltage stabilizer D2 is conducted, the fact that the triode Q2 and the triode Q1 in the signal calibration circuit amplify the wireless signals is overlarge is shown, the voltage stabilizer D2 conducts the thyristor Q5 through the resistor R12 and the capacitor C10, the thyristor Q5 discharges the overlarge part of the wireless signals to the ground, the triode Q3 is used for carrying out follow-up processing on the wireless signals, in order to enable the wireless signals to be transmitted to the wireless communication module without loss, the capacitor C13 is used for transmitting the wireless signals to the electric welding L3, The capacitor C11 and the capacitor C12 are used for impedance matching, and finally, the wireless signal is transmitted to the wireless communication module;
by arranging the signal calibration circuit and the signal output circuit for the wireless signals, the filter and the frequency selector in the signal calibration circuit are utilized to avoid that the accuracy of the wireless signals received by the wireless communication module is reduced due to the complex electromagnetic environment in the air, if signals transmitted by other wireless sensors which are arranged aiming at the elevator and comprise the Hall current sensor are transmitted, and the signals are mixed in the wireless signals, so that the situation that the master control system analyzes the wireless signals wrongly occurs, clutter in the wireless signals transmitted in the data communication circuit is filtered, in order to increase the anti-jamming capability of the wireless signals, the frequency modulator is utilized to modulate the wireless signals, the accuracy of the wireless signals is increased, the voltage stabilizer is arranged to avoid the frequency selector from amplifying the wireless signals by an overlarge multiple, and the voltage stabilizing tube is utilized to detect and release the wireless signals, and also avoids causing the surge phenomenon of the wireless communication module.
Claims (7)
1. The signal processing circuit of the hoister is characterized by comprising a signal calibration circuit and a signal output circuit, wherein the signal calibration circuit transmits a wireless signal transmitted by a data communication circuit to the signal output circuit after passing through a filter and a frequency selector, and the signal output circuit transmits the wireless signal to a wireless communication module after passing through a frequency modulator and a voltage stabilizer.
2. The signal processing circuit of the elevator as claimed in claim 1, wherein the signal calibration circuit comprises a filter and a frequency selector, the filter receives the wireless signal transmitted from the data communication circuit, the wireless signal is filtered by the filter and then transmitted to the frequency selector for frequency selection, and the frequency selector transmits the wireless signal to the signal output circuit.
3. The signal processing circuit of the elevator as claimed in claim 2, wherein the filter includes an inductor L1, one end of the inductor L1 is connected to the data communication circuit, the other end of the inductor L1 is connected to one end of a resistor R1, the positive electrode of a varactor D1, one end of a capacitor C1, the other end of a resistor R1 is connected to the non-inverting terminal of an operational amplifier U1B, the inverting terminal of the operational amplifier U1B is connected to one end of a resistor R14, the other end of the resistor R14 is connected to the output terminal of the operational amplifier U1B and one end of a variable resistor R19, the other end of the variable resistor R19 is connected to one end of a capacitor C2 and the base of a transistor Q2, the collector of a transistor Q2 is connected to one end of a resistor R6, the other end of a resistor R6 is connected to the positive power source VCC, and the emitter of a transistor Q2 is connected to the other end of a capacitor C1 and the negative electrode of a varactor D1 and connected to the ground.
4. The signal processing circuit of an elevator as claimed in claim 2, wherein the frequency selector comprises a resistor R3, one end of a resistor R3 is connected to one end of a capacitor C3 and the other end of a capacitor C2 in the filter, the other end of a resistor R3 is connected to one end of a resistor R4 and one end of a capacitor C5, the other end of a capacitor C3 is connected to one end of a resistor R7 and one end of a capacitor C4, the other end of the resistor R4 is connected to one end of a capacitor C4, one end of a capacitor C6, one end of a capacitor C7 and the emitter of a transistor Q1, the collector of a transistor Q1 is connected to one end of a resistor R2, the other end of a resistor R2 is connected to the other end of a resistor R6 in the filter and connected to a positive polarity power source VCC, the base of a transistor Q1 is connected to the collector of a transistor Q2 in the filter, the other end of a capacitor C6 is connected to the other end of a capacitor C5 and the other end of the capacitor C5, The other end of the resistor R7 and the other end of the capacitor C1 in the filter are connected in parallel to ground.
5. The signal processing circuit of the elevator as claimed in claim 1, wherein the signal output circuit comprises a frequency modulator and a voltage regulator, the frequency modulator modulates the frequency of the wireless signal transmitted from the signal calibration circuit, and the voltage regulator stabilizes the frequency of the wireless signal and transmits the stabilized frequency to the wireless communication module.
6. The signal processing circuit of the elevator as claimed in claim 1, wherein the frequency modulator includes a resistor R9, one end of the resistor R9 is connected to one end of a resistor R15, a base of a transistor Q6, and the other end of a capacitor C7 in the signal calibration circuit, a collector of a transistor Q6 is connected to one end of a resistor R8, one end of a capacitor C14, one end of an inductor L2, and one end of a capacitor C8, the other end of the inductor L2 is connected to the other end of a capacitor C14 and the other end of a resistor R8, the other end of the resistor R9 and the other end of the resistor R2 in the signal calibration circuit are connected with a positive power supply VCC, an emitter of the triode Q6 is respectively connected with one end of the resistor R10, the other end of the capacitor C8 and one end of the capacitor C9, and the other end of the capacitor C9 is respectively connected with the other end of the resistor R10, the other end of the resistor R15 and the other end of the capacitor C6 in the signal calibration circuit and connected with the ground in parallel.
7. The signal processing circuit of an elevator as claimed in claim 1, wherein the regulator comprises a transistor Q4, the collector of the transistor Q4 is connected to one end of a resistor R16 and one end of a capacitor C8 in the frequency modulator, the base of the transistor Q4 is connected to the other end of the resistor R16 and the negative electrode of a regulator D2, the positive electrode of the regulator D2 is connected to one end of the resistor R12, one end of a capacitor C10 and the control electrode of the thyristor Q5, the positive electrode of the thyristor Q5 is connected to the emitter of the transistor Q4 and the base of the transistor Q3, the collector of the transistor Q3 is connected to one end of the resistor R17, the other end of the resistor R17 is connected to the other end of the resistor R8 in the frequency modulator and to a positive power source VCC, the emitter of the transistor Q3 is connected to one end of the resistor R18 and one end of the capacitor C13, the other end of the capacitor C13 is connected to one end of the capacitor C11 and one end of the capacitor C11, One end of an inductor L3 and the other end of an inductor L3 are respectively connected with one end of a capacitor C12 and the wireless communication module, and the other end of a capacitor C12 is respectively connected with one end of a capacitor C11, the other end of a resistor R18, the cathode of a thyristor Q5, the other end of a capacitor C10, the other end of a resistor R12 and the other end of a resistor R10 in the frequency modulator in parallel connection and grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122439799.2U CN215828088U (en) | 2021-10-11 | 2021-10-11 | Signal processing circuit of hoister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122439799.2U CN215828088U (en) | 2021-10-11 | 2021-10-11 | Signal processing circuit of hoister |
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| Publication Number | Publication Date |
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| CN215828088U true CN215828088U (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122439799.2U Active CN215828088U (en) | 2021-10-11 | 2021-10-11 | Signal processing circuit of hoister |
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| CN (1) | CN215828088U (en) |
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- 2021-10-11 CN CN202122439799.2U patent/CN215828088U/en active Active
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