Hello guys, in this post I make a 500W mono amplifier. This is a class AB mono amplifier Which can deliver up to 500W RMS output at 4Ω ±70V, Test frequency 1khz. For designing my PCB, I used EasyEda online software. And then I go to PCBWay to manufacture my PCB. PCBWay is the largest PCB manufacturer in China. They offer Standard PCB, Advanced PCB, Rigid-Flex PCB, SMD-Stencil, and PCB Assembly Services. Here you get, 100x100mm 2 Layer PCB only at $5, And processing time within 24 hours. And they distribute, worldwide. The more you order, the less price you have to pay. You must upload the Gerber File and select the quantity, color, silkscreen, thickness, etc. Then choose your country, and shipping method, and then Pay. PCBWay will deliver your PCB within 7-10 days.
The PCBWay 7th Project Design Contest, launched in September 2024, promotes creativity in electronics and mechanical design, with an added emphasis this year on STM32 projects. The contest allows participants to submit their work in three categories: Electronics Projects, Mechanical Projects, and STM32 Projects. These can range from simple circuits to complex 3D mechanical designs.
Key deadlines include a project submission window from September 2, 2024, to January 19, 2025, followed by a review period, with winners announced on March 10, 2025. The competition encourages open-source designs and looks for projects that are both innovative and socially significant. The prize pool includes cash awards, with additional prizes for STM32-related projects and popular designs.
Participants have the chance to win up to $1500 along with various electronics gadgets, such as Raspberry Pi 5 and specialized hardware tools. All approved entries also receive a Raspberry Pi Pico as a participation prize.
The competition is open to electronics enthusiasts and innovators, with clear evaluation criteria focusing on design complexity, project descriptions, and social impact. It’s a great platform to showcase cutting-edge ideas and gain recognition in the global tech community.
After one week I received my PCB. You can see the PCB quality, it's awesome. I ordered Black PCB. But you can choose your PCB color. PCBWay provides 9 color solder masks - Green, Blue, Red, Purple, Black, White, Yellow, Matte Black, and Matte Green. On PCBWay you can get 100x100mm 2 Layer PCB only at $5. Maximum size PCB you can get 500x1100mm. The maximum Layer is up to 14 Layers. If you order PCB for the first time at PCBWay, you get a $5 discount coupon. So upload your Gerber today and get the best quality PCB.
Gerber File:- Gerber
PCB Layout & Schematic:- PDF
License:- ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.
Series light test:- After complete this board don't forget to series light test. When you will on this amplifier via series light, it glow for some time (1 - 2 sec). Then series light will turned off fully. If the series light will fully turned off, then check the voltages.
Check Voltages:- Bias volt 0.5V to 0.7V. Check Speaker Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect preamplifier to input and connect speaker to output.
Power Supply:- For get best performance of this amplifier, you use 45-0-45V to 55-0-55V 8A-10A Transformer. And in Bridge rectifier, You can use 25A-35A bridge rectifier (GBU2510, GBU3510, KBPC3510) and 2 pcs. of 10000uF capacitor.
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