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design an electronic circuit to sense motor current

$10-70 USD

Completed
Posted over 8 years ago

$10-70 USD

Paid on delivery
Just need a little help with a circuit design. I already have a simple circuit with limit switches to stop a small dc motor. I would like to be able to stop the motor when the current of the motor drops to a predetermined amount. Maybe use a sense resistor? I'm already using this IC - SN74AC14N. I'm only using one of the inputs so I would like to use this IC if possible.
Project ID: 9298568

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33 proposals
Remote project
Active 8 yrs ago

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Hello ... First I must analyze the circuit to know what type of current detector use. We may use operational amplifiers or a small transistor to work in saturation and cut depending on the amount of current is handled . In either case the circuits are simple and they work fine . Please send me the scheme you're using and make you a more detailed solution. Thank you. Regards . DPM
$70 USD in 5 days
5.0 (6 reviews)
3.5
3.5
33 freelancers are bidding on average $32 USD for this job
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$34 USD in 1 day
4.9 (217 reviews)
7.8
7.8
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I am an Electrical Engineer having specialization in Electronics and Control, teaching in Electrical Department at FAST National University Pakistan. I am also persuing my MS degree in Electrical Engineering with specialization in CONTROL. I have taught the followings courses, and also done many projects related to these subjects as well as related to consumer electronics products. 1. Control System Design & Modelling (Continuous, Discrete, Linear, Non-Linear, Optimal, Fuzzy Logic + Matlab & Simulink) 2. Digital Logic Design (Verilog, VHDL, Logisim) 3. Digital System Design (Verilog, VHDL, Logisim) 4. Controllers (8086 processor, 8051 Family, Arduino, PIC Family) 5. Power Electronics (PSIM, MATLAB, Orcad, PSpice) 6. Control of Electric Machine Drives 7. Circuit Analysis and Designe + Many Others 8. PCB Design (Proteous AREAS + Ultiboard + Altium Designerm + Diptrace) I assure you, if you assign your project to me, you surely gonna work with me in future.
$50 USD in 3 days
4.8 (256 reviews)
7.2
7.2
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Hello. I'm an electrical engineer . You task looks pretty simple. Can you tell me more about your power circuit and branche where you want to measure current. I will look what can do.
$15 USD in 3 days
5.0 (157 reviews)
7.1
7.1
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Hi, I am an Electrical Engineer and expert in Circuit Designing. I have designed a lot of Analog and Digital Circuits as well. I have previously done a project related to circuit Designing. I have designed and manufactured an amplifier of gain > 1500 . I have also designed a professional circuits for music company as well. I have also done a project on amplifier during my academic career. I have also done my simulation using multiple Computer Aided Softwares during academic career....I have designed amplifier, Logic Driven Gates Circuits and OP-AMP as well.......I will complete this project in maximum of 2 days time ........ Hope you will contact me and Hire me for your project as I am the most fitted one........
$55 USD in 3 days
4.9 (54 reviews)
5.7
5.7
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Hi, I have been working in R&D more than 15 years for international electronic design engineering companies in NZ and Australia developing optical touchscreens, RF, power meters, industrial data logging instrumentation products. I have designed and developed many 8/32 bit micro-controller based designs, analogue and digital circuits, schematics & PCB layout for 8051, PIC24s, MSP430s, Atmels, Renesas, STM32 ARMs, FPGAs, Freescale A9 iMX.6 Linux SoM, DDR3 SDRAMs , high voltage and power electronics designs, RF Nordic, TI chips, WiFi, Bluetooth, accelerometers, capacitive touch interface, stepper motors, battery management etc. I have huge experience with taking designs from concept to pilot and mass production (>100k pcs) including design reviews, verification, EMI/EMC emissions problems, design right for EMI, DFT/DFM. I have vast experience with low power and discrete transistor circuit design, isolated 10-150Wt AC-DC SMPS , non-isolated DC/DC converters, buck, boost, SEPIC designs, NiMH battery management as well as peripherals USB,I2C,CAN,RS232-485,SPI,LVDS, SDRAM, EEPROM, MMC, JTAG,SATA,DVI. I have designed multilayer (2-12layers) PCBs , experience with flex designs, blind and buried vias, high-speed digital design, trace impedance control using, analogue RF design, Solidworks 3Drendering.
$25 USD in 1 day
5.0 (21 reviews)
5.8
5.8
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Expert is here......... Please send me the details...... I have understood your requirements........
$50 USD in 1 day
4.9 (44 reviews)
5.4
5.4
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Dear Friend, We have good experience in embedded software and design, It is not only our job but passion. We have worked on from basic hardware to quad-copters. May I know how much current need to be sensed, we are interested in discuss it further. Consider us :) Thanks & Have a good day. Any queries, Please feel free to ask.
$20 USD in 2 days
4.4 (15 reviews)
5.2
5.2
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You can simply achieve this with just two transistors and a sense resistor. I can help you design :)
$25 USD in 1 day
4.8 (8 reviews)
4.2
4.2
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Hi! Im an electrical and electronic masters student studying in UWE. I have the experience of coding in C/C++/Assembly/Arduino/PIC C/MikroC/MATLAB for more than three years. I also have the knowledge and experience of ELECTRICAL AND ELECTRONICS circuit analysis and design. I also have experience in embedded systems using microcontrollers like PIC, ATMEL, ARDUINO and most of the other types. I have done BCS (British computer society) diploma level. I have the knowledge on PHP/HTML5/mySQL for website development. I have completed many freelancer assignments successfully. If you are interested in hiring me, please send me a message. I have made a lot of reports in the recent past. I have good experience in using Microsoft office softwares like Word, Excel and Powerpoint. I can write reports of any length without mistakes. Thank you!
$30 USD in 1 day
4.8 (22 reviews)
4.5
4.5
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HI, I have read the description of the project and I am interested to work on this project. I can do this project. If you are interested to discuss, then kindly contact me. Thanks for consideration. Best Regards. Chirag
$30 USD in 3 days
5.0 (7 reviews)
3.9
3.9
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Hi, The best way to monitor the dc motor current is shunt resistor with the help of micro-controller like PIC 16F877. It will provide some intelligence to control the motor. Suppose that you have increased the load on the motor , the micro-controller will detect the current (increase or decrease) and will stop the motor for few minutes (the time can be programmed). Or it can slow down the motor by using PWM technique. you can monitor the motor temperature also. What is the power rating of your motor? I will provide you the completer design. Regards
$30 USD in 5 days
5.0 (10 reviews)
3.7
3.7
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Hi, I read your ad and I would wish to contribute to the outcome of your work effectively, as an electronics engineer, especially control systems, instrumentation and power electronics. Please take a look at my portfolio to get an idea of my background and skills. I f you agree, more details could be exchanged by chat. Best regards.
$35 USD in 2 days
4.7 (9 reviews)
3.9
3.9
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A proposal has not yet been provided
$35 USD in 2 days
4.8 (6 reviews)
3.9
3.9
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Great Project !!, I have seen and understand all your requirements. I have very strong expertise in it although I have a great experience in it, I have intelligence, energy and integrity. Once give me work, I assure you , you'll surely like my work. Please open chat window to discuss further.
$80 USD in 2 days
5.0 (6 reviews)
3.4
3.4
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Hello, I am an experienced writer. i have completed more than 400 projects and i have over 155 positive reviews in my profile. i shall deliver you quality work. I have a team of engineers. Please discuss in details. Regards.
$88 USD in 4 days
4.6 (3 reviews)
3.4
3.4
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hi dear i am nonam arshad graduated as a electrical engineer. during my graduatiin i have dine alot of motorsfor my robot
$25 USD in 1 day
5.0 (2 reviews)
1.2
1.2
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Am an electrical engineer with well over a decade in power electronics design experience. I think that your idea for a sense resistor is a good one and can be implemented with the IC you specified. Please contact me for any questions.
$25 USD in 1 day
5.0 (1 review)
1.0
1.0
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hi. I can really help you. please consider me. thanks and regards inder .................... ..
$20 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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Hello, We are three electronics guy work together. We can do it and support you as many revisions as you need. We use proteus to simulate the whole circuit and this is pretty cool software to work with embedded system. Please knock me for further discussion... Thanks!!
$20 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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Experienced Electrical and Instrumentation Engineer with more than 05 years Industrial experience of design, commissioning and maintenance. Expert in troubleshooting problems in E&I systems
$25 USD in 1 day
0.0 (0 reviews)
0.0
0.0

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Flag of UNITED STATES
Greensboro, United States
4.9
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Member since Jan 13, 2016

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