KiCad Dual-Rail 70V PSU

@amelectronics

Hello, I can help you with this project. I have experience designing power supply and mixed-signal PCBs in KiCad, including high-current routing, power management, and production-ready layouts. I understand your requirements for the dual CRC-filtered power supply, low-noise grounding, UPC1237 speaker protection, high-current copper pours, chassis grounding options, and the required 120 × 80 mm board size. I will make sure the design is clean, passes DRC, and opens without errors in KiCad 7.x. I will provide the complete KiCad project, schematic, PCB layout, Gerber files, BOM, and all required manufacturing files. I can start as soon as we discuss the remaining details.

@cpp2048

This board needs special care to handle the power stage. any imbalance in the design will drift the 0V from either sides when load spikes occur during thumping beats. It has to be perfect matching design else this will add slight ringing in the 0V path. I can assist in this design and have worked on the high pwer audio amplifier designs in the past.

@macroenergy

With an extensive background in circuit design, electrical engineering, and PCB layout paired with my immense technical knowledge in KiCad 7.x, I understand the complexity and importance of your project. Achieving a low noise output, clean ground scheme, and efficient power supply are critical not only for your audio amplifier setup but also to ensure the overall functionality of your system. Throughout my career, I have designed a plethora of power electronic systems including dual rail power supply, CRC-filtered rails, transformer input compensation networks among other specifications you enumerated. Furthermore, I am experienced in implementing options for tying chassis ground through a bridge and additional diodes as well as employing compensation resistor-capacitor networks at the transformer input to suppress ringing. Speaking of your deliverables, I am proficient at generating ready-to-order Gerber/Excellon sets and BOMs from KiCad with meticulous attention to detail. My schematic designs are always accompanied by clear silkscreen labels for all components and test points just as you specified. As our project concludes, you will receive a masterfully organized KiCad 7.x project folder containing schematics, PCB designs excellently fitting within your specified dimensions along with all necessary libraries and 3D models. Get ready to be impressed!

@mairajali11

With my extensive experience as an Electrical/Electronics Engineer specializing in PCB Design and in-depth understanding of KiCad, I am confident in delivering exactly what you need for your project. Having worked on numerous similar power supply projects with stringent audio quality requirements, I understand how critical it is to maintain low noise output and a clean ground scheme. My designs have always upheld such standards, effectively reducing interference and providing exceptional audio clarity. My ability to incorporate diverse electronic components and ensure board optimization within given parameters will be particularly advantageous. I'm well-versed in using various design software including Eagle, Altium, KiCad, and EasyEDA (as a verified Professional Certified Designer). Using these tools efficiently, I can execute your project flawlessly while staying aligned with the specified 120 × 80mm dimensions. Moreover, you'll benefit from my proficiency in producing comprehensive deliverables – from the KiCad 7.x project folder with all requisite files to readily order Gerber/Excellon sets - ensuring a smooth post-design process. My top ranking as a Preferred Freelancer is testament to my commitment in delivering quality solutions within budget and on schedule. Don't hesitate to reach out - let's turn your vision into reality!

@engrusmanfaiz

Your primary challenge is designing a low-noise, high-current dual-rail PSU that safely delivers up to 10 A at 70 V while maintaining excellent grounding, speaker protection, and manufacturability within the 120 × 80 mm constraint. With 12+ years of experience in power electronics, analog PCB design, and KiCad, I can deliver a production-ready design featuring optimized high-current routing, star-ground implementation, CRC filtering, UPC1237 speaker protection, comprehensive DRC/ERC validation, and complete manufacturing files. I have designed high-power SMPS, linear power supplies, industrial control boards, and audio-related PCBs with a strong focus on thermal performance, EMI reduction, and reliability. You’ll receive a clean KiCad 7.x project, Gerbers, BOM, and documentation ready for fabrication. Regards, Engineer Muhammad Usman | PCB Pro Expert

@tshibsamuel477

Hi there, I read your offer carefully and noted the fixed maximum budget of $140. I understand that you need a compact KiCad 7.x dual-rail power-supply PCB for an audio amplifier, including CRC filtering, high-current copper paths, grounding options, bridge-rectifier footprints, snubber circuitry, rail LEDs, and the complete UPC1237 speaker-protection section. I can deliver the schematic, PCB layout, libraries, 3D models, Gerber/Excellon files, and BOM while respecting the 120 × 80 mm limit and mounting-hole requirements. Just send me a message and we can discuss the final electrical details. Best regards, Samuel Tshibangu

@ahsanfreelancer7

Hi, Hope you are well. It sounds like a great job and aligns with where I'd like to take my career. I'm eager to learn more. I have experience over the past fifteen years as a PCB Design Engineer at Global Engineering services and RWR Private Ltd. You can visit my freelancer profile page; https://www.freelancer.com/u/ahsanfreelancer7 I’ve been consistently committed to Specific goals, skills or traits the new job entails. Could we schedule some time to discuss about opportunity in more detail? I’d welcome the opportunity to learn more about the role and share how my skills and experiences would benefit you. I’m available to talk at any time. I look forward to speaking with you. Best, AHSAN ULLAH

@leonidye

Hi, I can design a compact, low-noise dual-rail ±70V / 10A power supply PCB in KiCad that meets your audio amplifier requirements and fits within the 120 × 80 mm board size. The design will include CRC-filtered dual rails with proper star-ground implementation, support for both PCB-mounted and chassis-mounted 5020 bridge rectifiers, transformer input RC snubber, chassis-ground bridge (10Ω + diodes), LED indicators on both rails, and a fully integrated UPC1237 speaker protection circuit with AC-sense for reliable relay release during power-off. High-current copper pours, thermal considerations, clear silkscreen, test points, and fuse labels will all be incorporated. Deliverables include the complete KiCad 7.x project (schematic, PCB, libraries), DRC/ERC-clean design, Gerbers, Excellon files, BOM (CSV), and fabrication-ready manufacturing outputs. I have experience designing high-current power electronics and low-noise audio PCBs, and I can begin immediately while keeping you updated throughout the project. I look forward to working with you. Regards,

@hayat38402

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas:  Antenna Design (CST, HFSS)  Embedded C Programming.  VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI  MATLAB/SIMULINK  Network Simulator NS2/NS3  Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  PLCs / SCADA  PCB Designing Proteus, Eagle, KiCAD and Altium  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.

@manusharma2992

As a highly experienced and proficient Electrical Engineer and Circuit Designer, I am well-equipped to tackle the intricacies of your KiCad Dual-Rail 70V PSU project. I have intimate knowledge and hands-on experience with KiCad, having created numerous layouts that demonstrate an understanding of your core requirements, such as funneling the reference point to converge at the final capacitor and incorporating clear silkscreen labels for easy assembly. This guarantees an elegant design that aligns harmoniously within your specific audio amplifier chassis.

@yaroslavmark

Hi, I have 12+ years of experience in power electronics and PCB design, delivering 40+ production-ready boards including linear power supplies, high-current DC-DC converters, audio electronics, and mixed-signal systems with emphasis on low-noise grounding, thermal management, and manufacturability. I use KiCad 7 and have extensive experience designing high-current copper layouts, CRC filtering, and protection circuitry for reliable operation. Approach ✅ I will design the complete KiCad schematic including dual CRC rails, UPC1237 speaker protection, chassis-ground network, AC sensing, bridge rectifier options, and transformer compensation network. ✅ I will create a compact PCB within the 120 × 80 mm constraint using wide copper pours, optimized return-current paths, thermal management, and clear silkscreen for assembly and testing. ✅ I will perform ERC/DRC verification and deliver the complete KiCad project, Gerbers, Excellon files, BOM, libraries, and manufacturing-ready documentation. Questions ✅ What transformer secondary voltage (VAC) and VA rating will be used to achieve the required ±70 V rails? ✅ What copper weight do you prefer (1 oz, 2 oz, or higher) for the 10 A current paths? ✅ Should the speaker relay contacts and PCB traces be designed for continuous 10 A load, or is a lower audio-current rating acceptable? Best, Yaroslav

@tetianam8

⭐⭐⭐⭐⭐ Hi, Your specification is clear and well thought out, and it's the kind of power electronics project I regularly work on. I've designed high-current linear power supplies, mixed-signal PCBs, and audio electronics with an emphasis on low-noise grounding, thermal management, and manufacturability. For this design, I'd use a 4-layer KiCad layout to provide low-impedance power distribution, generous copper for the 10 A current paths, and a carefully implemented star-ground where the dual CRC rails converge only at the final filter capacitor. I'll include the alternate 5020 bridge rectifier mounting option, RC snubber network on the transformer input, chassis-ground bridge (10 Ω + diodes), rail-status LEDs, clearly labeled test points, fuse locations, and a complete UPC1237 speaker-protection circuit with AC-sense for fast relay release during power-down. Before routing, I'll verify that all requirements fit within the 120 × 80 mm board outline and the 110 × 70 mm mounting pattern. If any compromises are needed for creepage, thermal performance, or component spacing, I'll discuss them with you before proceeding. You'll receive the complete KiCad 7.x project, ERC/DRC-clean schematic and PCB, Gerbers, Excellon files, BOM, libraries, and editable source files ready for fabrication. I'd be happy to discuss the transformer secondary voltage, capacitor sizing, and expected continuous load so we can optimize the layout for both electrical performance and long-term reliability.

@shykhAbubakar

Hi, Having over 8 years of experience in PCB design and hardware development, I can assist you in designing a compact, low-noise dual-rail linear power supply PCB in KiCad 7.x, optimized for high-current audio amplifier applications. The design will focus on clean power delivery, proper grounding topology, and manufacturability while ensuring the PCB fits within your 120 × 80 mm mechanical constraint, while following IPC-2221and IPC-2152 standards for reliable, safe and manufacturable hardware. Before starting, please confirm the following: Q1. What are the transformer secondary voltage and VA rating (e.g., 2 × 35 VAC, 2 × 45 VAC, etc.)? Q2. Which relay voltage should the UPC1237 speaker protection circuit use (12 VDC, 24 VDC, or another value)? Project Deliverables: KiCad 7.x project folder with: • Electrical Schematics and PCB Layouts • Libraries and 3D models • Ready-to-order Gerber/Excellon set • Pick and Place Files and Drill Files • Documentation • Bill of Materials (CSV) Looking forward to your confirmation so we can proceed. Warm regards, AbuBakar

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@electronicsdone

Dear Client, Most bids here will say, I can design your power supply PCB." But a compact ±70V, 10A dual-rail PSU for an audio amplifier involves several hidden challenges: high-current routing, CRC filtering, bridge rectifier thermal management, speaker protection integration, transformer ringing suppression, and production-ready PCB design. PCB Must Innovations can help you develop your KiCad PSU using a risk-first approach, not just a PCB layout approach. With 30 years of electronics design experience in high-power analog electronics and multilayer PCB development, our focus is to deliver a stable, low-noise, and manufacturable design that performs reliably from the first prototype. ✅ Where we will add value: 1. Optimized dual-rail power architecture with CRC filtering, star grounding, and high-current copper routing. 2. Complete integration of the UPC1237 speaker protection circuit, AC sensing, chassis grounding options, and LED indicators. ✅ Suggestion: Finalize the transformer specifications, capacitor sizes, and mechanical constraints before PCB layout. This minimizes routing compromises, improves thermal performance, and ensures the board fits within the 120 × 80 mm enclosure. ✅ Questions: 1. What are the transformer secondary voltage and VA ratings? 2. Do you have preferred capacitor brands or maximum component height restrictions? OOPS, Character Limit Issue. Please message me in the chat section so I can cover more aspects of your project.

@danish2051

I am an Embedded Systems and PCB Design Engineer with experience in Altium Designer, Kicad, Easyeda, Protious and custom hardware development. I can design your PCB from schematic to production-ready files, including: • Schematic Design • PCB Layout • Component Selection • Design Rule Check (DRC) • Gerber Generation • BOM Preparation • Manufacturing Support (JLCPCB, PCBWay, etc.) I have experience with ESP32, STM32, sensor interfaces, power supplies, RF modules, Ethernet, and industrial electronics. Please share the project requirements, schematic (if available), board dimensions, and any special requirements. I can start immediately. Looking forward to working with you. Best Regards

@azraazeen9

As an avid electronics enthusiast with a strong background in electrical engineering and circuit design, I believe I am the best fit for your KiCad Dual-Rail 70V PSU project. My proficient grasp of KiCad 7.x and expertise in PCB layout exemplifies my ability to effectively translate your project specifications into a robust, compact design that adheres strictly to your required dimensions. Given the nature of this project, I fully understand the indispensable value of a clean ground scheme and low noise, especially within an audio amplifier setup, therefore, optimizing these aspects will be my utmost priority. Throughout my longstanding career, I've leveraged my skills in various aspects of electrical engineering to deliver custom solutions that exceed client expectations. My fluency in both hardware and software yields designs that are not only efficiently functional but also aesthetically intuitive. This speaks directly to your need for clear silkscreen labels and test points - no detail will go unseen. Additionally, my familiarity with Gerber/Excellon file generation and BOM compilation will facilitate a seamless handover after project completion. Your satisfaction is paramount to me; so as your chosen freelancer, I pledge unwavering commitment towards proffering a neat PCB layout accurate to your micron-level requirements.

@julianm260

As a seasoned electronics engineer with expertise in power electronics and multi-layer PCB design, I am confident in delivering an exceptional product for your KiCAD Dual-Rail 70V PSU project. Throughout my 8-year tenure in the field, I've gained extensive experience and honed my abilities to create compact yet high-performing solutions for projects just like yours. Knowing the criticality of a low-noise and clean grounding scheme for your application, I would prioritize these aspects in my design. Additionally, your requirements for dual rails, terminal locations, support for diode bridges, transformer input compensation, speaker protection circuit, and clear silkscreen labels will all be met with utmost competence. And adding an LED to both rails? Not a problem! What sets me apart is not just my technical skills but also my ability to manage projects from conception to implementation while ensuring safety and performance compliance. My system integration and troubleshooting proficiency could prove beneficial when addressing any conflicts that may arise to your desired size or design. If selected for this project, you can rely on me to deliver a well-structured KiCAD 7.x project folder and ready-to-order Gerber/Excellon set that meet your specifications. It would be an honor to contribute my expertise to your audio amplifier chassis project.

@mahmoudralizadeh

Hello, I have good experience with projects similar to yours. Please take a look at my profile. Thank you.