Design me a Product

$30-250 CAD

Closed

Posted

about 7 years ago

$30-250 CAD

Paid on delivery

I need a simple circuit designed so that when a TEP (Peltier) module that is heated on one side and cooled on the other, resulting a variable DC current and voltage output, I wish all the resulting electrical energy to be captured by a group of small UltraCapacitors (acting as a battery) and then discharged slowly in order to illuminate a small low powered LED light. Perhaps the source can feed the super caps in parallel and discharge them in series. (probably need diodes separating them) The idea would be that the LED would glow while the TEP module is being heated, but also that the extra energy is being stored in the super caps so that when the TEP module is no longer being heated, the LED would continue to glow for as long as possible. I would like to use 2.7v Ultracapacitors of anywhere between 1 Farad and 100 Farad, ideally two or three of them in total. The resulting circuit should be able to be manufactured in quantity for less than $10.

Project ID: 12909954

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11 proposals

Remote project

Active 7 yrs ago

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11 freelancers are bidding on average $275 CAD for this job

@SEELaboratory

I place bid according to you requirements. But what do you think about BQ25570? It receive more energy from TEP because BQ25570 works at maximum power point (MPP). BQ25570 cold-start voltage: VIN ≥ 330 mV. Designing device with BQ25570 will be slightly expensive - 220. Different applications in area of alternative energetics are interesting for me.

$180 CAD in 7 days

5.0

(20 reviews)

6.6

@amankaushal90

Hi , I am an electronics engineer by profession. I have a lot of experience in this domain and I can guarantee you good work and on time delivery . Would like to talk to you more about the project. Please send me a private message here. Regards Aman Kaushal

$250 CAD in 7 days

4.9

(18 reviews)

5.9

@kingjoon

Hello, We are a team with more than 14 years of experience in 3D design and 3D photorealistic visualization. We have done many similar projects in the past, check out our portfolio here: https://www.freelancer.com/u/kingjoon.html Please give me more details about your project so I can give you an exact quote to do the project. Looking forward to hearing from you, please let me know if you have any questions. Best regards, Mohsen

$750 CAD in 5 days

5.0

(6 reviews)

5.5

@luisfilipeaguiar

Hi, You sounds interesting. I would suggest to add a uP to PWM the LEDs. The leds consume quite some energy, but our eye can't understand if they are flickering in high frequency (look at TVs/Screens). By placing a uP, you can have the LEDs blinking 64 times per seconds at max bright, at 1KHz. You would save 93% of energy :) The uP itself can be chosen and programmed to use utra low power. Consuming even less than the LEDs. I understand there is no on/off switch? It can be easily added. Depending on the energy you would like to store while the peltier is connected, the caps are to be dimensioned. Filipe

$133 CAD in 3 days

5.0

(2 reviews)

4.4

@SantoshKGD

Hi, Please share your complete project requirements and task expected from us. And also TEP module number which you are using. About us: We have 10 years of experience in Product development. Micro-controllers we can work on PIC, STM32, PSOC and AVR and also we have all the development kit and instruments available with us. For PCB design we use KICAD v4. And for GUI C# / LABVIEW will be used. Thanks and Regards, Santosh

$277 CAD in 10 days