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Amplify circuit 2

$30-250 USD

Closed
Posted over 9 years ago

$30-250 USD

Paid on delivery
I have a frequency generator that has a 2.5amp power supply with 5+,5-,20+,20-,common. I need an amplify of the signal that has a channel 1&2 passing a opamp before reaching the potentiometer then output. he input to amplifier will range in frequency to the mas of 25mhz and 0.05v to max 8v signal peak to peak. The output will run a coil of 0.5ohm and we can have a 5w10ohm resistor to limit the sort circuit. I believe a class H will be best. Pcb design and bom is required for me to manufacture a sample to test your design. Space in limited in my enclosure and i need to know what heat sink to use. The image is what we are using present and is not working We do not get the 15v output.
Project ID: 6652256

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15 proposals
Remote project
Active 9 yrs ago

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15 freelancers are bidding on average $245 USD for this job
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hi, i am an electrical engineer. i have expertise in embedded system design.i can help you with this project. Please check my profile for my previous work experiences. let me know if you are interested in the bid so we can discuss the details further. regards
$650 USD in 9 days
4.9 (39 reviews)
7.1
7.1
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Hello! As i understood, you need from us only PCB design based on your schematic? Please contact us in chat, to discuss details. Best regards, Oleksandr
$210 USD in 7 days
4.8 (13 reviews)
5.9
5.9
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I have read and understand your requirements Please open chat window to discuss further.. ++++++++++++++++++++=====================================
$177 USD in 3 days
4.9 (3 reviews)
3.3
3.3
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we can do that but your description did not tell us about the shape of that signal sine or squer or triangle waveform and if you need to adit that desgin which attached in image please send us Proteus file to make your requirement,
$777 USD in 3 days
5.0 (2 reviews)
3.0
3.0
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Hi, You have frequency generator with power supplies +/-5V and +/-20V. Does all power rails can source 2.5A (From my experience I think not). The amplifier frequency response need to be from 0 to 25 MHz? (I suppose that 25mhz is typing error because it means 25 mili hertz) If I understood well, you expect to have 15V output (I suppose 15 V is max and not effective). The schematic circuit you currently use (the quality of picture is poor that is why I can't see the circuit in collector of Q1) if the output is BNC has amplification of 1 and if the input is 8Vpp it is +/-4Vmax it is normal that you don't get 15V because +/-4vmax * 1 = +/-4Vmax. Also current shematic topology has great signal distortion. If you place 5W10ohm resistor as current limiter it is going to burn because when the frequency is low coil impendance is aproaching its resistance (0.5ohm) so at the 15Vmax (it is 10.63Vef, (10.63V*10.63V)/10.5ohm = 10.77W at the resistor). The frequency respons at the power level you want is too much for H amplifier topology because at that topology amplifier power rails need to track signal it is relative easy at audio amlifier where frequencies are limited to lets say 100kHz, but at 25MHz it is big problem. First you need to know output impedance of your signal generator in order to know what amplifier input inpedance and current/voltage amplification need to be. Second you need to knoe whether you +/-20V power rails can sustain about 1.5A........ Thanks, Petar
$150 USD in 3 days
5.0 (1 review)
2.0
2.0
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hi... i can design your project in Altium Designer.. i ll provide to you schematics, PCB, BOM and gerber files and what you need im interesting your project, pls give me more details.. thanks..
$133 USD in 3 days
5.0 (1 review)
0.6
0.6
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Hi Sir/Mam, I and my friends are currently doing our Btech + Mtech degree from IIT Bombay. We are all die hard engineers in the field, we have already made the similar circuit as a part of course curriculum. We will design the circuit in multisim, labview or psice whatever is suitable for you. Please give us the chance and we will deliver the work well before the deadline
$133 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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Our Products & offerings # Single-sided, double-sided, and multi-layer boards (up to 16 layers) with high density design handing capabilities. # Component Library creation as per IPC standard. # Design for Surface mount, through-hole & mixed technology with QFN,BGA, PGA & fine pitch components. # RF PCBs # Design as per EMI/EMC requirement. # Design for manufacturability (DFM) # Design for Assembly (DFA) # Bill of material generation. # Reverse Engineering (Bare board to design file/gerber) # Gerber generation # Stack up creation for Multilayer. # Printed Circuit Board Reverse Engineering # Schematic & Layout Designing # CAD/CAM # Eagle Layout # PCB Manufacturing upto 24 Layer # PCB Assembly # PCB Assembly Machines # Components # Product Design # Stencil Printing For more information and if you want to see our work please contact on Skype: parikhkunal2006
$278 USD in 14 days
0.0 (0 reviews)
0.0
0.0
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We can do this job. Just give us one chance............................................................................
$155 USD in 3 days
0.0 (0 reviews)
0.0
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üniversite'de Altium Designer 10 öğrenmem pcb çizimiyle ilgili yerde staj ve çalışmam artı arşivim olması...
$155 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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$155 USD in 3 days
0.0 (0 reviews)
0.0
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Greetings... Electrical Engineer (Gold-Medalist) from the oldest and the most reputable engineering institute of Pakistan (UET, Lahore). Wondering why you should hire me??? To get answered see the following: I have extensive experience with the Electronics prototype design of several projects like: 1- DC-DC Flyback Converter (555 timer, MOSFET,Transformer) 2- Cellular AGC Design(Active low pass filter using OPAMP) 3- Cellular CDMA receiver Design 4- Stepper motor controlled using PIC for Automation Industry Assembly line 5- Servo motor controlling the flappers attached to the wings of the wind turbine And MUCH MORE… SPECIAL OFFER FOR YOU: I offer you FREE 3 Days technical support even after completion of the project so that you could feel comfortable with the technical background and you could explain anyone about the project as if you yourself has done the project. Looking forward to ur +ve reply soon :)
$130 USD in 10 days
0.0 (0 reviews)
0.0
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About the client

Flag of SOUTH AFRICA
Pretoria, South Africa
5.0
46
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Member since Feb 10, 2014

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