
In Progress
Posted
Paid on delivery
Design a Low-Cost DC Voltage Detection Circuit and PCB in EasyEDA — 120V to 1000V DC **Description:** I need an electronics freelancer to design a simple, functional, low-cost, and protected circuit capable of detecting **DC voltage from 120V to 1000V DC**. When the circuit detects voltage within this range, it must activate a **relay output**. The relay contact will be used to switch or control an external circuit/load of up to **1000V DC and 100mA**. The project must be designed in **EasyEDA**, including both the **schematic circuit** and the **PCB layout**. The circuit should also include a **LED indicator**, if possible, to show when voltage is detected or when the relay is activated. **Main requirements:** * Design the schematic in **EasyEDA** * Design the PCB layout in **EasyEDA** * Detect DC voltage from **120V to 1000V** * Activate a relay when voltage is detected * Relay contact or output protection rated for up to **1000V DC / 100mA** * Low-cost and simple design * Protection against overvoltage, electrical noise, and reverse polarity if possible * Electrical isolation between the high-voltage input and the low-voltage control side * LED status indicator * Use common and easy-to-find components * Provide BOM/component list * Provide Gerber files for PCB manufacturing * Provide a basic explanation of how the circuit works This circuit will be used in a high-voltage DC application, so **safety, isolation, PCB clearance, creepage distance, and protection are very important**.
Project ID: 40478442
39 proposals
Remote project
Active 22 secs ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs

I'll prioritize the isolation barrier design and PCB creepage/clearance distances for IEC 60664-1 compliance — this is where most low-cost HV circuits fail and where I'll make yours safe and manufacturable.
$65 USD in 7 days
0.0
0.0
39 freelancers are bidding on average $117 USD for this job

As an accomplished electrical engineer with immense expertise in circuit design, electronics and PCB layout, tackling this critical project would be second nature to me. One of my specialized areas is in power electronics, a domain that aligns perfectly with your low-cost voltage detection circuit design requirement for the DC range of 120V to 1000V. My understanding of safety, isolation, protection and PCB clearance in high-voltage applications is well-reflected in my past successful implementations of motor drives, DC-DC converters and solar inverters. Having worked extensively with EasyEDA, I am confident in delivering exceptional results right from the schematic design to the layout. The need to ensure actual functionality without burning a hole in your budget was a factor I took into consideration while handling multiple commercial projects over the years, wherein I had to ensure efficient component selection while keeping costs minimal. I understand that creepage distance and clearance are paramount given the high-voltage context which shall duly be accounted for.
$150 USD in 7 days
7.5
7.5

I can design a safe and low-cost high-voltage DC detection circuit in EasyEDA for the 120V–1000V DC range with isolated sensing, relay activation, LED indication, and PCB protection considerations. The design will include HV resistor divider/isolation stage, protected relay driver circuitry, surge/noise suppression, creepage-clearance optimized PCB layout, and components selected for reliable HV DC operation. Deliverables will include EasyEDA schematic and PCB, BOM, Gerbers, design notes, and a functional explanation with focus on safety, isolation, and manufacturability.
$140 USD in 4 days
6.9
6.9

As a seasoned Electrical/Electronics Engineer and a certified EasyEDA designer, I have hands-on experience in designing the very kind of low-cost voltage detection circuit you need - with impeccable precision even at high voltage inputs. My exposure to multiple designing tools including Eagle, Altium, KiCAD and EasyEDA empowers me to craft PCB designs of exceptional quality that conform to the minutest safety standards. Throughout my 8+ years career, I've tackled intricate electrical challenges with ease, honing special skills in dealing with high-voltage systems with minimal risks. My comprehensive understanding of PCB layout and proficiency in MATLAB and Python coding enables me to create designs that not only meet your functional criteria but also remain cost-effective. As a verified PCB designer ranking among the top 1% and being a Preferred Freelancer, my top-most priority is client satisfaction attained through delivering quality work on time and within budget. I assure you expertise that matches your needs for easy-to-find component selection, electrical isolation maintenance, protection against overvoltage/electrical noise/reverse polarity amongst other requirements. Let's collaborate to turn your idea into a reality!
$140 USD in 7 days
6.9
6.9

Hi! As a Hardware Design Engineer with 7+ years of experience, I specialize in high-voltage and power converter PCBs. I can safely design this 120V–1000V DC detection circuit in EasyEDA. For a 1000V system, safety is paramount. I will implement strict IPC-2221 creepage/clearance standards, design physical isolation slots under the optocouplers, and use a high-voltage Solid State Relay (SSR) instead of a mechanical one to prevent catastrophic arcing. You’ll receive a fully optimized schematic, PCB layout, BOM, and Gerbers. Let's discuss your timeline and get started safely!
$30 USD in 7 days
6.6
6.6

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!
$110 USD in 3 days
5.8
5.8

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal
$110 USD in 5 days
5.5
5.5

120V to 1000V DC detection with relay output and full isolation — straightforward project, I can deliver this cleanly in EasyEDA. I'll design the voltage divider input stage with proper creepage and clearance for 1000V, an optocoupler for isolation between the HV side and control side, and a relay rated for your 1000V/100mA load. LED indicator included. Overvoltage, reverse polarity, and noise protection built in from the start — not added later. All components will be common, easy to source, low cost. Deliverables: EasyEDA schematic and PCB layout, Gerber files, full BOM, and a plain-English explanation of how the circuit works. I've been designing industrial and high-voltage PCBs for 15 years. Top Rated on Freelancer since 2018. One question before I start: is the relay switching an external DC load, or does it also need to handle AC? That determines the relay selection.
$140 USD in 7 days
5.4
5.4

Hi, your project matches my experience in high-voltage interface electronics, isolated sensing circuits, and industrial PCB design with strong emphasis on safety, creepage, and reliable switching. I have 10+ years of experience designing protected HV monitoring and control circuits, including isolated detection stages, relay interfaces, surge protection, and production-ready EasyEDA/JLCPCB layouts. ✅ I will design a low-cost isolated DC voltage detection circuit in EasyEDA capable of reliably detecting 120–1000V DC while maintaining safe isolation between the HV input and low-voltage control electronics. ✅ I will implement protected relay-driving circuitry, LED indication, filtering, reverse-polarity protection, and overvoltage suppression while respecting creepage/clearance requirements suitable for high-voltage DC environments. ✅ I will deliver the complete EasyEDA project, schematic, PCB layout, BOM, Gerbers, and a concise technical explanation covering detection thresholds, isolation strategy, and PCB safety considerations. ✅ Do you want the relay energized continuously whenever HV is present, or only momentarily triggered on detection? ✅ Is an external isolated low-voltage supply available for the control side, or should the PCB generate its own low-voltage rail from the HV input? ✅ Are there enclosure or PCB size constraints that may affect creepage distances and isolation layout? Best, Yaroslav
$140 USD in 7 days
5.0
5.0

⭐⭐⭐⭐⭐ This is a high-voltage sensing project, so the most important part is not the relay itself but the safe detection architecture. Detecting 120–1000VDC across such a wide range requires careful attention to isolation, input protection, creepage/clearance distances, resistor voltage ratings, and reliable operation in noisy HV environments. I have experience with power electronics, HV sensing circuits, PCB design, and EasyEDA development. For this project, I would use an isolated detection stage (likely opto-isolated) with a properly rated high-voltage divider network, surge protection, reverse-polarity protection, and a relay driver stage to ensure the low-voltage control circuitry remains electrically separated from the HV input. Deliverables: • EasyEDA schematic • EasyEDA PCB layout • BOM with readily available components • Gerber files for manufacturing • Relay control and LED indication circuits • Design notes explaining operation and safety considerations A few questions: Is an external low-voltage supply available, or must the circuit derive power from the 120–1000VDC input? What relay output form is preferred (SPST, SPDT)? Are there size constraints for the PCB? I’d be happy to develop a safe, manufacturable design that prioritizes reliability and high-voltage protection.
$140 USD in 7 days
5.0
5.0

Dear Client, High-voltage DC detection is not just about sensing voltage — the real challenge is ensuring safe isolation, stable triggering, and reliable operation across a wide range of 120V to 1000V DC, where noise, leakage currents, and insulation breakdown can easily cause failure or unsafe behavior. This is a safety-critical design, so the focus will be on robust isolation, proper PCB clearance, and predictable switching behavior rather than just a basic comparator circuit. I would approach this by: 1. Reviewing your requirements and safety constraints to define proper sensing method relay driver selection, and protection strategy including surge handling, creepage, and clearance design 2. Designing a complete EasyEDA schematic and PCB layout, optimized for low cost but with correct high-voltage isolation zones, component selection, and a robust relay trigger stage with LED status indication One key question: Do you prefer a resistive high-voltage divider based sensing approach, or should V1 prioritize a fully isolated sensing method for maximum safety margin? If you message me, I will define the safest and most cost-effective design approach for your exact application, ensuring a reliable, manufacturable PCB — not just a theoretical schematic. Best regards, Prat PCB Must Innovations
$250 USD in 2 days
6.4
6.4

I have previously designed similar high-voltage sensing and control circuits involving isolated voltage detection, relay activation, protection circuitry, and PCB development for industrial applications. Are you looking for an PCB Design who can design a safe and reliable high-voltage DC detection circuit capable of sensing 120V–1000V DC and activating an isolated relay output for industrial applications? I’m an Electrical and PCB Design Engineer with experience in high-voltage sensing, industrial control circuits, PCB design, and EasyEDA development. I can create a cost-effective solution that prioritizes safety, isolation, manufacturability, and component availability. Deliverables: EasyEDA schematic project EasyEDA PCB layout project Gerber and drill files Complete BOM with readily available components PDF schematic export Design documentation explaining circuit operation, protection methods, and isolation strategy Best regards, Hasan Ali
$30 USD in 4 days
4.3
4.3

Being 'Sakshi', both an expert in 3D design and a skilled electrical engineer, I possess the unique combination of talents necessary to best serve your low-cost DC voltage detection circuit and PCB design project. Drawing from my extensive experience in circuit design, electronics, embedded systems, and PCB layout, I hold the power to solve intricate problems such as those that arise when designing for high-voltage DC applications. Moreover, my meticulousness ensures that none of the design criteria are overlooked; from meeting the voltage requirements (120V to 1000V DC), to incorporating protection against overvoltage, electrical noise, reverse polarity, as well as optimizing safety measures. My previous low-cost designs have proven both functional and economically viable.
$35 USD in 1 day
4.6
4.6

Good day. I can done this task in few days. With LED. Some of my past work you can look at portfolio.
$80 USD in 3 days
4.5
4.5

I have designed and shipped over a dozen low-cost detection circuits across different projects, from solar-powered water dispensers to industrial monitoring systems. For your voltage detection circuit, I can deliver a clean, minimal-BOM design using a simple Zener diode and transistor comparator or a cheap op-amp, depending on your exact threshold and accuracy needs. I handle the full build myself—schematic, PCB layout, and component sourcing—so you get a working prototype without any handoff delays. I have done this exact type of work for clients globally, and I can get this done quickly within your budget. Let me know your target voltage and I will send you a clear proposal.
$140 USD in 2 days
3.3
3.3

With my diverse skill-set and extensive experience in electronics, I'm confident that I can successfully design a Low-Cost DC Voltage Detection Circuit and PCB that meets all your specifications. I've worked on similar projects before involving circuit and PCB design using software like EasyEDA, Ki Cad, Altium, Eagle, and OrCAD - so I'm well-versed in these tools to provide you with a high-quality design. Safety is paramount in high-voltage applications such as yours, which is why it's assuring to mention that I've had successful experiences in designing circuits with protection against overvoltage, electrical noise, and reverse polarity. My optics for isolation through PCB clearance and creepage distance would undoubtedly make for an efficient design.
$37 USD in 1 day
3.2
3.2

Hi, I design high-voltage, isolated industrial sensing circuits and will develop your 120V to 1000V DC voltage detection board in EasyEDA. I will create a safe schematic and layout incorporating robust optoisolation to separate the high-voltage input from the low-voltage relay control side. The PCB layout will strictly adhere to proper creepage, clearance, and isolation slot rules required for 1000V DC operation to prevent arcing. I will utilize a wide-input current-limiting network to handle the voltage span safely, integrate the status LED, and select a high-voltage rated relay or solid-state solution for the 1000V/100mA output stage. You will receive production-ready EasyEDA files, Gerbers, a complete BOM, and a clear operational overview. Best regards,
$100 USD in 5 days
2.5
2.5

Hi, Your project is exactly the type of electronics design work I specialize in. I can develop a complete EasyEDA solution that detects DC voltages from 120V up to 1000V and safely triggers a relay output while maintaining proper isolation between the high-voltage and control sections. Since this will be used in a high-voltage DC application, I will focus heavily on safety, component selection, creepage distances, PCB layout practices, and noise immunity. My goal is to deliver a design that is both reliable and economical to manufacture. I am ready to begin immediately and can provide regular progress updates throughout the project. Thank you for your consideration.
$140 USD in 5 days
1.8
1.8

Hello sir Electronics Engineer here KiCad EasYEda Experr Pcb Designing Using Altium design also i read Yours Requirement You need a Circuit for a Dc volt Detection fluctuation of a Voltages. Like a StepLizer do I am confident i can do its For You using a low voltage Realy.
$210 USD in 10 days
0.8
0.8

I have hands-on experience designing high-voltage detection and protection circuits, and this project aligns well with my background in analog circuit design and PCB layout. I will design a fully isolated detection circuit capable of sensing 120V to 1000V DC using a precision resistor divider network with optocoupler isolation, ensuring complete electrical separation between the high-voltage input side and the low-voltage relay control side. The relay output will be rated and protected for your 1000V DC / 100mA switching requirement, and I will include reverse polarity protection, overvoltage clamping, and noise filtering on the input stage for robust field performance. PCB layout will be done entirely in EasyEDA with strict attention to creepage and clearance distances as per IEC 60664 standards for high-voltage applications, and the board will include a clearly visible LED status indicator. You will receive the complete EasyEDA schematic, PCB layout, Gerber files, full BOM with common and affordable components, and a plain-language explanation of how each stage works. All design choices will prioritise safety, isolation integrity, and low cost without compromising reliability. I can start immediately and deliver a review-ready draft within the agreed timeline. Best regards, Engr. Muhammad Uzair
$99 USD in 4 days
1.0
1.0

Leveraging my decade of experience in electronics, I breathe life into ideas from concept to execution with precision and safety as paramount. With regards specifically to your project requirements,I'm comfortable using and leveraging the potential of the EasyEDA platform for both the schematic circuit diagram and PCB layout. Furthermore, addressing the importance you've placed on affordability, simplicity, common components and easy maintenance/repairs, please note I've always endeavored to meet these criteria in all my designs. I think paying attention to this detail is particularly important in order to ensure ongoing cost efficiency in production or maintenance of the circuit design long after project completion. Lastly but importantly, Safety is my core concern when dealing with high-voltage circuitry. So along with the key criteria you've mentioned like electrical isolation between the high-voltage input and low-voltage control side, I've fluency with aspects such as PCB clearance and creepage distance. My well rounded profile combining well-honed firmware development skills (to provide a basic explanation of how the circuit works), mechanical-electronic integration capability (critical for a holistic product development), and familiarity with popular brands like Arduino, Raspberry Pi and FPGA boards transforms me into an ideal candidate for this task. Let's collaborate towards bringing your vision into reality!
$30 USD in 2 days
0.0
0.0

Barra Mansa, Brazil
Payment method verified
Member since Aug 1, 2015
$10-100 USD
$30-250 USD
$250-750 USD
$30-250 USD
$30-250 USD
€8-30 EUR
$8-15 USD / hour
₹12500-37500 INR
$250-750 USD
$750-1500 USD
₹1500-12500 INR
₹1500-12500 INR
$25-50 USD / hour
€8-30 EUR
₹600-1500 INR
₹1500-12500 INR
$750-1500 USD
₹1500-12500 INR
₹1500-12500 INR
$10-30 USD
₹1500-12500 INR
$30-250 NZD
₹750-1250 INR / hour
$3000-5000 CAD
₹1500-12500 INR