Low-Noise 24 V Audio PSU Design

@macroenergy

As a Freelancer with extensive experience in Analog Electronics, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, and PCB Layout, I'm confident I can deliver an excellent solution for your low-noise 24V audio PSU project. While my prior work has focused mainly on Power Electronics and Embedded Systems, I have a deep understanding of the principles and nuances involved in designing noise-free power supplies that will be a great fit for your needs. My work on implementing motor drives, AC/DC converters, DC-DC converters, battery chargers, and solar inverters gives me the expertise to design highly efficient systems with low ripple and broadband noise filtering capabilities. Furthermore, my experience in renewable energy applications has honed my ability to tackle thermal drift issues effectively. I'm conversant with using simulation tools like Orcad and LTspice to accurately predict performance metrics including expected ripple figures. Additionally, my proficiency in Matlab allows me to generate reliable simulations for power-related networks and I can leverage this skill to provide you thorough LTspice simulations that verify claims about noise-reduction strategies in the design note. It would also ensure my commitment to not just meet but exceed your expectations for acceptance criteria.

@mairajali11

Designing pristine, low-noise 24 V audioPSUs is my bread and butter, and I have a track record to prove it. With over 8 years in the industry, I have honed my skills in Analog Electronics, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Layout, and Signal Processing. You'll find ample proof of this in my portfolio which showcases successful projects that demanded sensitive noise control like yours. In line with your project requirements, I am well-versed with designing LDO-based regulators for completely encapsulated board-mounted transformers. My designs focus on minimizing 50/60 Hz mains-borne noise, switch-spikes and thermal drifting without comprising on ripple figures. To assure you of my capabilities, I will present to you a complete schematic (PDF +native design files), Gerbers', alongside BOM with parts in stock. Let me wow you further by demonstrating simulations using LTSpice that vouch for the noise-reduction strategy. In addition to my technical competence, I pride myself on being highly responsive and committed with a proven ability to deliver within deadline without compromising on quality. To sum it up, engaging me for this project means you're not only choosing an expert but also a diligent professional who values open communication and respects clients' project needs. Looking forward to unveiled possibilities!

@cpp2048

Is it something you would use for bench testing ? I am wondering the Output: 9 V to 24 V DC variable range, specially. But to design it properly, you need two stage regulation just in case you are planning for test bench design. There are low noise LDO available from TI, but as soon as input / output voltage difference becomes higher, the injected thermal noise gets higher. So need to know what the specific use case. I am already working on an Audio project which also needed low noise power stage for its ADC/DAC so I can assist nicely, but $80 wont justify my time for this design.

@engrusmanfaiz

Hello, Your priority is achieving an ultra-low-noise linear power supply for sensitive audio equipment, where ripple, hum, thermal stability, and grounding are far more critical than efficiency. With 12+ years of experience in analog power supply and PCB design, I can design a low-noise LDO supply with a capacitance-multiplier front end, optimized grounding, CRC/snubber networks, and transformer filtering to achieve your ripple and thermal targets. I’ll deliver the complete KiCad project, LTspice simulations, schematic, PCB, Gerbers, BOM with in-stock components, and detailed design notes, ensuring the design is production-ready and optimized for high-end audio applications. Regards, Engineer Muhammad Usman | PCB Pro Expert

@tshibsamuel477

Hi there, I read your offer carefully and understand that you need a low-noise, hum-free linear power supply for sensitive audio equipment, using an encapsulated PCB transformer, capacitance-multiplier stage, low-noise regulation, filtering, and transformer snubbers. I can support the complete schematic, KiCad PCB design, component selection, thermal analysis, LTspice validation, BOM, and manufacturing files. My background in power electronics, analog design, PCB development, filtering, and signal integrity is well suited to this project. I will focus on minimizing mains ripple, broadband noise, thermal drift, and audible hum while meeting the required output and load conditions. Just send me a message and we can discuss the specifications. Best regards, Samuel Tshibangu

@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.

@leonidye

Hello, I have strong experience designing low-noise linear power supplies for sensitive audio equipment, including transformer-based supplies, LDO regulation, capacitance multipliers, PCB layout, and EMI reduction. I can design this project in KiCad with a focus on ultra-low ripple, clean grounding, CRC filtering, transformer snubbers, optimized return-current paths, and thermal performance. The deliverables will include the complete schematic, native KiCad files, production-ready Gerbers, BOM with readily available distributor part numbers, LTspice simulations, and concise design documentation. The PCB will be optimized for high-current operation while maintaining separation between power and sensitive analog sections to minimize hum and noise. I will target your specified ripple, thermal, and stability requirements while ensuring the design is fully manufacturable and DRC/ERC clean. Throughout the project I will provide regular progress updates and support revisions after review to ensure the final hardware meets your expectations. I look forward to discussing the transformer specifications, enclosure constraints, and output requirements so we can begin immediately. Regards,

@Mahmoud00Ibrahim

Hi, Your project is a great fit for my experience in analog power supply and PCB design. I understand that, for high-end audio, achieving ultra-low noise is far more important than maximizing efficiency. I can design the complete power supply, including a low-noise LDO with a capacitance multiplier (or a quieter topology if analysis shows an advantage), transformer snubbers, thermal optimization, and a layout focused on minimizing hum, ripple, and EMI. The design will be validated with LTspice simulations and created with manufacturability in mind. You’ll receive the complete KiCad project, PDF schematics, fabrication-ready Gerbers, production BOM with readily available components, and a design note explaining the noise-reduction approach, expected ripple, and thermal performance. I’ve designed 50+ PCB projects involving analog circuits, power electronics, and embedded systems, and I always prioritize reliability and production-ready designs. I’m comfortable with your $80 budget and would be happy to discuss the specifications before getting started. Best regards, Mahmoud Ibrahim Embedded Hardware & PCB Design Engineer

@yaroslavmark

Hi, I have 12+ years of experience in power electronics and mixed-signal PCB design, delivering 40+ production-ready boards including low-noise linear power supplies, precision analog circuits, and audio electronics with emphasis on grounding, thermal performance, and EMI reduction. I have designed power stages combining linear regulation, passive filtering, and careful PCB layout to achieve low ripple and stable operation for sensitive analog systems. Approach ✅ I will design a low-noise supply using an LDO with a capacitance-multiplier front end (or a superior topology if justified), incorporating transformer snubbers, CRC filtering, and optimized thermal design. ✅ I will create a KiCad PCB with star-ground architecture, short high-current loops, analog/digital separation where required, wide copper pours, and component placement optimized for minimum hum and broadband noise. ✅ I will validate the design with LTspice simulations, perform ERC/DRC verification, and deliver the complete KiCad project, Gerbers, BOM with in-stock components, and concise design documentation. Questions ✅ What output voltage (or adjustable range) do you require within the 9–24 V specification? ✅ Is the encapsulated transformer already selected, or should I recommend one based on output voltage and thermal targets? ✅ Are there enclosure size constraints or maximum PCB dimensions that should be considered during layout? Best, Yaroslav

@tetianam8

⭐⭐⭐⭐⭐ I have reviewed your requirements carefully. This is not just a regulator PCB — the main challenge is controlling every noise path from the mains input through the transformer, rectification, filtering, grounding, and final regulation stage. I have experience designing power electronics and PCB layouts where low noise, clean return paths, thermal behavior, and manufacturability are critical. For this project, I would approach it with an encapsulated PCB transformer, properly designed snubbers, a low-noise rectifier/filter stage, capacitance multiplier (or a justified alternative), followed by a high-performance LDO stage optimized for audio applications. The design process would include: LTspice simulation to verify ripple/noise performance before PCB release Careful star/controlled grounding strategy for audio use Thermal evaluation at 1.5 A continuous load KiCad schematic, PCB layout, Gerbers, BOM with available components, and design documentation Suggested milestones: Power topology selection and LTspice validation Complete schematic + component selection PCB layout optimization and design review Final manufacturing package and design notes A couple of points I would confirm before starting: What exact mains voltage/frequency should the transformer support? Is the 9–24 V output fixed, or should it be adjustable? I can focus the design around achieving the lowest practical noise rather than simply meeting nominal specifications.

@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

@julianm260

With my extensive experience in electrical engineering and power distribution design, I'm confident I can create a low-noise 24 V audio PSU that meets your exacting specifications. Having worked extensively on both high-power electronic and power-distribution projects, I've developed a deep understanding of filtering techniques to minimize noise across different frequencies and I am well-versed in noise-reduction strategies. This knowledge will be invaluable in creating a quiet output for your sensitive audio gear. From my experience in power-electronics, I have learned that efficiency and reduced noise don't always align directly, but rest assured I understand the importance of an optimized power supply for your high-end audio equipment. My design will focus on low ripple and broadband noise filtering to reduce any interference, making sure the audio quality from your gear is top-notch. As proof of my capabilities, my portfolio showcases various successful projects I have carried out from their inception to completion. Besides delivering highly efficient solutions under rigorous schedules in compliance with safety and performance standards, my designs are always accompanied by full documentation detailing the design's characteristics and trade-offs, precisely what you expect as part of the deliverables.

@electronicsdone

Dear Client, Most bids here will say, "I can design your audio power supply." But developing a low-noise 24V PSU for sensitive audio equipment involves several hidden challenges: transformer selection, CRC/LDO optimization, thermal management, and PCB layout for minimum EMI and hum. PCB Must Innovations can help you develop your audio PSU using a risk-first approach, not just a schematic or PCB layout approach. With 30 years of electronics design experience in analog power supplies and audio electronics, our focus is to deliver a stable, manufacturable, and production-ready design that performs reliably from the first prototype. ✅ Where we will add value: 1. Low-noise power architecture with optimized LDO, capacitance multiplier, and transformer snubber design. 2. EMI-aware PCB layout with proper grounding, thermal optimization, and high-current routing. 3. Complete KiCad project, Gerbers, BOM, and production-ready manufacturing files. ✅ Suggestion: Finalize the transformer specifications, output voltage range, and enclosure constraints before PCB layout to achieve the lowest possible ripple and thermal performance. Profile: https://www.freelancer.in/u/electronicsdone ✅ Questions: 1. Do you have a preferred transformer manufacturer or VA rating? 2. Is the 9–24V output adjustable or fixed for your application? OOPS, Character Limit Issue. Please message me in chat so I can explain my approach, similar projects, timeline, and technical solution in more detail.

@mahmoudralizadeh

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

@Specgi

Hello! I can design a low-noise 24 V audio power supply optimized for high-fidelity audio applications. With experience in analog electronics, power supply design, and PCB development, I will create a solution that delivers clean, stable power with minimal ripple and interference to ensure excellent audio performance. My expertise includes linear and switch-mode power supply design, voltage regulation, EMI/EMC mitigation, component selection, thermal analysis, and PCB layout best practices. I will carefully optimize the design for low noise, high efficiency, and long-term reliability while providing complete schematics, design files, and documentation to support manufacturing and testing. I am committed to delivering a thoroughly validated design that meets your technical requirements and project timeline. Throughout the project, I will maintain clear communication, provide regular progress updates, and work closely with you to ensure the final power supply performs reliably in your audio system.

@ihors29

Hi, The key challenges of your project are achieving sub-2 mV RMS noise across the audio band, managing thermal performance at 1.5 A continuous load, and designing the transformer/rectifier/regulator stages to prevent mains-related interference and switching artifacts. I would approach this by first validating the power budget and selecting the transformer, rectification, capacitance multiplier, and LDO combination based on dropout margin and thermal limits. The PCB would prioritize grounding strategy, current return paths, isolation, and noise-sensitive routing. LTspice simulations would be used to estimate ripple, transient response, and regulator behavior before finalizing the layout. A few technical questions: Is the 9–24 V output range intended to be selectable or fixed per build? What input mains specification should the encapsulated transformer support (voltage, frequency, safety class)? Are there specific enclosure constraints affecting transformer size and heat dissipation? I’d be happy to discuss the design requirements and determine a practical implementation path within the stated budget. Regards, Ihor

@ElectronicsMust

Best Low-Noise Audio Power Supply Design Expert! ⭐⭐⭐⭐⭐ Hi, When I saw your Low-Noise 24 V Audio PSU Design project, it reminded me of several precision analog power supply projects I've delivered, including ultra-low-noise linear regulators, LDO-based supplies, capacitance multiplier circuits, transformer-based power stages, and audio-grade PCB designs. ✅ I have 11 years of experience in analog hardware, power electronics and PCB design, including linear regulators, LTspice simulations, and production-ready PCB layouts. ✅ I'm skilled in delivering complete manufacturable designs, including schematics, KiCad PCB layouts, Gerbers, BOMs with readily available components, LTspice simulations, and design documentation. Before outlining the best approach, may I clarify: 1. Do you have a preferred encapsulated transformer manufacturer or VA rating? 2. Is adjustable output (9–24 V) required through hardware selection or a potentiometer? Two quick suggestions: ✅ Combine a capacitance multiplier with a high-PSRR LDO and CRC filtering to achieve ultra-low ripple and excellent mains noise rejection. ✅ Optimize PCB grounding and transformer placement to minimize magnetic coupling and eliminate audible hum. Freelancer doesn't allow me to message first, so please feel free to reach out. I'd be happy to help design a quiet, reliable, production-ready audio power supply. Kind regards, Avi Gupta Quality is never an accident.

@ahmaddar2970

This proposal focuses on delivering a high-performance, low-noise 24 V audio power supply. Utilizing an LDO regulator preceded by a capacitance-multiplier stage to ensure minimal ripple and broadband noise, aligned with your specifications. The input will feature a fully encapsulated transformer, with snubber circuits to suppress switching noise. The design includes comprehensive schematics, PCB layouts, and SPICE simulations to validate noise reduction performance, targeting ≤2 mV rms ripple. All components will be selected for availability from mainstream distributors, with a detailed BOM and design notes discussing the noise-reduction strategy, trade-offs, and expected ripple figures. This approach guarantees a reliable, high-quality power supply capable of meeting the stringent noise and thermal criteria essential for high-end audio equipment.

@Zawiya3

Dear Client, I am an experienced electronics design engineer with expertise in power supply design for sensitive audio applications. I can design a low-noise 24 V power supply that delivers clean, stable output with minimal ripple and electromagnetic interference, ensuring optimal performance for your audio equipment. My focus is on achieving excellent electrical performance while maintaining efficiency, reliability, and manufacturability. My design process includes schematic development, component selection, simulation, PCB layout recommendations, and comprehensive analysis of noise, thermal performance, and voltage regulation. Whether you require a linear or switching power supply, I will optimize the design to meet your load requirements while incorporating appropriate filtering, protection circuits, and grounding techniques to minimize audible noise and maximize long-term reliability. I am committed to providing a complete engineering package, including schematics, bill of materials (BOM), design calculations, and clear documentation to support prototyping and production. Throughout the project, I will maintain open communication, provide regular progress updates, and incorporate your feedback to ensure the final design meets your technical specifications and performance expectations. I look forward to contributing to the success of your audio power supply project.