# Electronics designer/consultant. Constant Current Pulse Generator (1 to 10 mA, pulse duration of 100 microsec. to 2ms, applied across 1K to 100Kohm resistive load).

For this project we require an experienced electronics engineer to help us design a circuit, part of a bigger electronics design. Please reach out only if you are a senior EE with relevant experience.

The deliverable is the schematics of the circuit (no layout or fabrication needed at this stage). In addition to the schematics, we require the full model/reference of the key components (i.e. all the info needed to order them) and a detailed explanation (could be voice/video or written) that demonstrates that the design will meet our specifications and provides a rationale as to why it is the best solution.

Specifications of the circuit (please see attached file):

1. Signal Inputs: 1 analog voltage signal (coming from an external MCU’s DAC). Range 0 to 5V or 0 to 3.3V, to be agreed.

2. Signal Outputs: two floating outputs (isolated from the circuit’s ground) across which the load will be connected. This circuit should be designed to operate with resistive loads with a nominal value between 1Kohm and 100Kohms.

3. The circuit generates current pulses across the resistive load. The amplitude of the pulses, in the range 1mA to 10mA, either positive or negative, is set by the analog input, and should be independent from the resistance of the load within the specific range of acceptable loads. The current pulse on the load tracks the profile of the voltage pulse seen at the input. Pulses will have a duration of 100 microseconds to 2ms.

4. The rising and falling edges of the pulses should be as fast as 5 microseconds (or 5% of the shortest pulses).

5. For safety reasons, it would be best to avoid having large DC voltages in the circuit (but can be discussed).

6. Throughout the duration of a pulse, the output current should not deviate from the ideal (square) output by more than 5%. This means that, if a step-up transformer is used, voltage-droop and rise-time should be considered and minimized, for the entire range of pulse duration required by the specifications (up to 2ms).

7. Compliance for various loads: a) for 100Kohm loads, Imax should be up to 1mA, b) for 10Kohm loads, Imax should be 10mA c) for 1Kohm loads, Imax should be also 10mA (clamped for safety).

Taidot: sähkötekniikka, elektroniikka

Tietoa työnantajasta:
( 0 arvostelua ) Bellaterra, Spain

Projektin tunnus: #16044543

## 13 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön

uetian09ee506

Hi i can design the circuit as per your project description. Relevant Skills and Experience Electronics Designer Proposed Milestones €555 EUR - Constant Current Source

€555 EUR 5 päivässä
(240 arvostelua)
7.2
seshupower

Design of current pulse generator as per the given requirements. Relevant Skills and Experience Hi, I am a post graduate power electronics engineer and having very good experience in product design and development. I Lisää

€1333 EUR 25 päivässä
(59 arvostelua)
6.7
RaspberryOculus

Dear Sir, I am an electrical engineer with 18 years experience . I am interested in your project, please send me a private chat message so that I can give you details. Relevant Skills and Experience A lot in the fi Lisää

€698 EUR 10 päivässä
(14 arvostelua)
5.9

i am a embedded hardware and software expert and have rich experience with hardware design and firmware development. i designed pcbs and developed firmware for it , manufactured prototype directly. Relevant Skills an Lisää

€500 EUR 10 päivässä
(16 arvostelua)
5.6
iTinkerBell

Hello, I am an experienced electronic engineer. I have done similar works before. I think I can help you. Thank you. Relevant Skills and Experience Voltage / Current pulse generator Proposed Milestones €500 EUR - on Lisää

€500 EUR 10 päivässä
(3 arvostelua)
5.8

Hello, Greetings of Peace! I have gone through your requirements in detail. I have worked previously on 4-20 mA and 0-140V sensor reading. Relevant Skills and Experience Industrial circuit Designs Proposed Milestones Lisää

€600 EUR 10 päivässä
(17 arvostelua)
4.7
AhmedSobhiSaleh

I am a professional electrical engineer I know all about circuit design and have the required cad tools on my laptop I can finish your task quickly and efficiently you can see my work in my portfolio Relevant Skills a Lisää

€277 EUR 7 päivässä
(19 arvostelua)
5.0
Starkindustries

Hi Sir i am expert in designing electronica circuit i am confident that i can complete this job. I have work on such device before if you come to chat we will discuss. thanks Relevant Skills and Experience Electrical Lisää

€250 EUR 5 päivässä
(2 arvostelua)
1.6
iffi37

Hi I would love to do your task. If you hire me, i won't let you down. I can provide you all these things with unlimited revisions till the satisfactorily completion of [login to view URL] for your message .Thank you

€444 EUR 12 päivässä
(1 arvostelu)
2.0
beautiXiao

Hello, I am a senior electrical engineer. I can complete your project asap. I have the experience of 7+ years. we can discuss more over chat. Thanks. Relevant Skills and Experience Electrical Engineering, Electronics Lisää

€750 EUR 10 päivässä
(0 arvostelua)
0.0
roneldivina

A proposal has not yet been provided

€888 EUR 30 päivässä
(0 arvostelua)
2.1
tetrabid247

Hello, my name is Roberto and I am an Engineer. I have experience with circuits design as well as telecommunications. I have time to start right away. Relevant Skills and Experience check my profile for more of my wor Lisää

€555 EUR 10 päivässä
(1 arvostelu)
0.0
€555 EUR 10 päivässä
(0 arvostelua)
0.0