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Debug an amplifier and peak detecter circuit using op-Amps

$30-250 USD

Chiuso
Pubblicato quasi 9 anni fa

$30-250 USD

Pagato al completamento
Hello I designed an audio detector circuit using an opamp, followed by a peak detector stage (also opamp). Right now my circuit is not working well, I need a hardware engineer who knows a lot about OPAMPS to help me figure out what is wrong. One constraint I have is that I cannot change the circuit configuration or layout since its on a circuit board, I can just change the component values.
Rif. progetto: 7874326

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19 proposte
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Attivo 9 anni fa

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19 freelance hanno fatto un'offerta media di $121 USD
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Hello! Send me a message! I want to help you! Have a nice day! .
$111 USD in 3 giorni
4,9 (20 valutazioni)
6,4
6,4
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hi bro i can help you with this i have been working with the pcbs since last 4 years i am waiting for your reply to start regards
$106 USD in 1 giorno
4,9 (41 valutazioni)
6,6
6,6
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A proposal has not yet been provided
$147 USD in 3 giorni
4,9 (56 valutazioni)
5,9
5,9
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Hi, Send me your schematic and explain the problem with more details. Layout picture would be helpful as well if rework needed. I am leaving tomorrow for one week vacation but should come back next Wednesday. I don't think it will take more then a day to solve the problem. Regards, Dsnejko
$111 USD in 10 giorni
4,9 (3 valutazioni)
5,4
5,4
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Generally please provide specific task description. Over 12 years of experience in electronics hardware and software design. Proficient in software and hardware design of embedded systems. Successful in planning and management of entire development and production cycle. Programming languages: C, C++, Ada, Pascal, MATLAB, GPSS, VHDL Processor architectures: 8051, AVR, ARM-M3, ARM-R4, ARM-7, x86, PicoBlaze, PSoC, PIC FPGA and CPLD architectures: Cyclone, MAX, Spartan, CoolRunner Set of rules to be stated before work: - All milestones should be backed up by you. So you release the money for milestones when you receive work done for each milestone and happy with it. - All decisions that I will make during the development that were not stated in project description I may do on my own understanding. I may ask you, if something was not described but not necessary I will do so. - Any changes that are to be entered by you for the project description, results, milestones, etc. after me accepting the project are subject to discussion and may lead to extra payment. - Next milestone work will begin only after finishing the previous one and releasing payment for it. - Prototype cost, delivery costs, components, PCB manufacture and other costs not connected with solely my services are extra payed when they are determined.
$105 USD in 15 giorni
4,9 (19 valutazioni)
5,1
5,1
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Hi, I am very experienced with using op amps for this sort of design and should be able to review your schematic and your results and come up with answers very quickly. Please send schematic Regards Marc skype:palmanz
$83 USD in 2 giorni
5,0 (7 valutazioni)
4,6
4,6
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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.
$100 USD in 3 giorni
5,0 (4 valutazioni)
4,0
4,0
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Have industrial experience in PCB designing of 1 to 6 layers. Have worked on many embedded projects : coding and hardware designing. Have 4+ years experience in KiCad and EAGLE Cad. Worked on many wireless modules BLE4.0 ,WiFi ,GSM&GPS like SIM908, Nordic's nRF51x22 , TI's cc2541 cc26x0 series ,CY7C65632 etc. Completed projects on Induction Cooktop, Note counting Machine, USB Hub and biomedical devices using Analog Front End devices(AFE) eg: TI's AFE4400,AFE4300 ;Analog Devices AD8232,ADAS1000 etc. Also have experience in creating 3D model of the PCB board.
$100 USD in 3 giorni
5,0 (1 valutazione)
1,4
1,4
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I have read and understand all your requirements Please open chat window to discuss further ------------------------------------------------------------------------------------------------------------------------------
$80 USD in 0 giorno
2,8 (2 valutazioni)
2,0
2,0
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hi, i have sound knowledge of hardware designing. have 5 year experience . i would like to work with you
$155 USD in 3 giorni
5,0 (1 valutazione)
0,8
0,8
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am graduate engineer and i know abt op amp ,please give me detail schematin in eagle or handwriting ckt with full value insallh i i will solve your problem
$35 USD in 1 giorno
5,0 (1 valutazione)
0,4
0,4
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Hi...b4 you award the bid...dropbox me a link with the schematic. I'll look it over, if it's not a major issue I'll give you the solution right away. You can award the bid if it works out and you're satisfied! Here are some of my interests: search 'revolt hackaday' for my public electronics stuff... thanks! Ancel
$155 USD in 3 giorni
0,0 (0 valutazioni)
0,0
0,0
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I've developed many circuits using OPAmps, like active filters, amplifiers, attenuators, and other applications. I have some experience to support you. Best Regards
$155 USD in 3 giorni
0,0 (0 valutazioni)
0,0
0,0
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Hello, I am a Hardware and Firmware Developer cum Schematic/PCB Designer, having 9+ years of experience. Expertise in Arduino, AVR, PIC, 8051 programming. PCB/Schematic design expertise in Proteus, Altium, Eagle, Orcad. Also having expertise in using Simulators like Proteus, Multisim, PSpice. So, I can simulate this project and easily debug. And if u want some changes in the result as per your specific requirement, it can be easily done. I want to discuss further details. Thanks Sapna Surve
$55 USD in 3 giorni
0,0 (0 valutazioni)
0,0
0,0
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Hi I am an electronics engineer Send me the circuit diagram along with model and values for the opamps and components you are using. I can easily help you in this project. Regards USman
$250 USD in 3 giorni
0,0 (0 valutazioni)
0,0
0,0
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I am a student of electronics engineering and possess extensive knowledge on the subject. I have made circuits of the same type. If you have any questions please contact me.
$40 USD in 3 giorni
0,0 (0 valutazioni)
0,0
0,0
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Hello I have recently done quite similar circuit, I can help you out. Apparently it looks like you have glitches coming from either your power supply rails or you might need to add a light low pass filter on your inputs. There is also a possibility that the glitch coming during the transition stage when the peak detector just attempts to hold the peak the time when input just falling down from its peak value. I wish I could share the snapshots of my work.
$155 USD in 3 giorni
0,0 (0 valutazioni)
0,0
0,0

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Bandiera: UNITED STATES
Pembroke PInes, United States
5,0
6
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Membro dal mag 20, 2014

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