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help me to modify a circuit (simple frequency generator)

€8-30 EUR

Completed
Posted about 2 months ago

€8-30 EUR

Paid on delivery
hello, i have a circuit which has 9V battery input, and produces a square wave, minV 0V, maxV 9V (depending on battery V), duty cycle ??%, frequency around 1000hz. here is the circuit reproduced on everycircuit : [login to view URL] i need your help to modify this circuit so that : input : 9V battery (7.5V - 10.5V) output : minV 0.9V (approximately 10% of battery voltage, must stay over 0V) maxV 9V (more or less depending on the battery voltage and what V the circuit uses) square wave (must be sharp) duty cycle 90% (approximately) frequency 1000Hz (approximately) your job, if you accept it, will be : -to reproduce this circuit in your favorite simulation software and to modify it so that it produces the output / waveform that i want. -to provide a list of the components for the new circuit, with their properties. -to help me to reproduce the new circuit in everycircuit so that i can check that the output / waveform is what i want. after this has been done, the work will be considered as complete and i will release the money of the milestone. then we will discuss for others milestones, if i want to do others modifications to the circuit. for your proposal, please show the waveform that i want in your favorite simulation software. thanks for your interest in this project, regards,
Project ID: 37811707

About the project

7 proposals
Remote project
Active 2 mos ago

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Hello. I'm an electronic engineer. I can do this circuit in EveryCircuit for you, and meet the requirements without any problem, because I worked a lot with 555 ICs. Please, if you have any questions, let me know it.
€19 EUR in 7 days
0.0 (0 reviews)
0.0
0.0
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Hello....I have a lot of experience working with the NE555 in the generation of PWM signals...I can provide simulation using Proteus ISI...or physical assemblies on a breakboard...
€30 EUR in 7 days
5.0 (8 reviews)
4.2
4.2
7 freelancers are bidding on average €22 EUR for this job
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As an experienced and dedicated Electrical Engineer, my skill set perfectly aligns with your project needs. Throughout my career, I have gained substantial knowledge in numerous applications, especially in circuit design and digital electronics. This, combined with my proficiency in various software like AutoCAD, PLC and SCADA, Solidworks and more, enable me to offer comprehensive solutions tailored to meet your specific requirements. I understand the importance of maintaining the voltage levels you've specified while keeping the waveform sharp and ensuring a duty cycle of 90%. Over the years, I've successfully executed similar projects and consistently delivered outputs that match the client's exact needs. To demonstrate this promise to you, I will simulate your modified circuit on my preferred software and provide clear evidence of its performance through the expected waveform. Additionally, my commitment to excellence goes beyond just designing the circuit; I will also guide you through every step of the way as you rebuild the modified circuit using Everycircuit. Rest assured that your satisfaction is my priority. With excellent communication skills and a solution-oriented approach, I guarantee a smooth project experience where you will be actively involved in the process. Let's embark on this endeavor together and modify your circuit to precisely meet your desired output!
€20 EUR in 3 days
5.0 (2 reviews)
3.4
3.4
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As an experienced electrical engineer and circuit designer, I am confident in my ability to tackle your project with the precision and skill it demands. I believe my adeptness with simulation software will make for a smooth and successful endeavor in reproducing the ideal circuit. This experience extends to everycircuit, which you mentioned you would like to use for verification as well. Regarding the specific modifications you require, I assure you that with my expertise, I can adjust the circuit to accommodate any battery voltage between 7.5V - 10.5V while still maintaining an output ranging from 0.9V to 9V. In addition, I will ensure a square wave output with a sharp 90% duty cycle and a frequency near the desired 1000Hz. I understand the importance of clear and effective communication throughout the project. Thus, I welcome your insights and feedback at every milestone we reach, giving you full confidence in my work. Rest assured, when we complete this task together, you will have a redesigned circuit that exactly meets your requirements. Let's get started on producing the results you need!
€19 EUR in 7 days
5.0 (1 review)
2.6
2.6
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Leveraging my extensive experience as an embedded system engineer specialized in electrical engineering and circuit design, I am confident in my ability to modify the circuit according to your requirements. In terms of software, I'm well-versed with EveryCircuit and have the necessary tools to replicate and modify the circuit for producing sharp square waves with a duty cycle of 90% at approximately 1000Hz. Having worked on similar tasks in the past, I fully understand that accuracy is key when modifying circuits. Rest assured, I'll deliver precise parameter values catering to your desired input range - a minimum voltage of around 0.9V and a maximum voltage of 9V (adjusting accordingly based on the battery voltage). Throughout the project, I'll maintain clear communication lines and demonstrate all progress on EveryCircuit so you can easily validate if the output waveform is what you envisioned. Your satisfaction is paramount to me, and I'll only consider the work complete when you're thrilled with the results. With my commitment to detail and understanding of your requirements, I'm confident we can transform this circuit exactly how you want it
€19 EUR in 7 days
5.0 (1 review)
1.5
1.5
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As an experienced electrical engineer with a passion for circuit design, I would be an ideal choice to carry out the modifications you need on your frequency generator. I have comprehensive skills in reproducing circuits using simulation software - like EveryCircuit, which you utilized - and making tweaks to tailor them to specific requirements. With these abilities, I am confident in delivering precisely the waveform you desire. In addition to modifications, I will provide you with an all-inclusive bill of materials for the upgraded circuit components. Drawing from my background in electronic design, I can also assist you in replicating the new circuit on EveryCircuit for thorough testing and verification. My commitment to quality is unwavering as I seek total satisfaction for my clients. The milestones approach that you've outlined aligns perfectly with how I operate professionally. Once we've accomplished the initial task, with your approval and releasing the funds, we can move on to discussing other modifications you may need in the future. Working together, I believe we'll successfully refine your frequency generator to optimally meet your unique needs. Don't hesitate to choose me; let's start improving your circuit today!
€19 EUR in 7 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of FRANCE
CUSY, France
4.7
11
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Member since Jul 3, 2016

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