View LM #3) BPA – W Bridged/Parallel AB Amp reference design. Specifications, support documents, and additional tools available at Digi-Key. Your load looks mostly resistive, not capacitive. I think most design include a large capacitor between the speaker and the driver to block DC. W-power-amplifier-with-bridge-parallel-configuration The project is based on six LM to produce a well designed audio.

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Robert Reed on August 15, at Great job, very brifge explained. The minimum gain brkdge of your amplifier will depend on your input voltage, speaker impedance, and output power according to the formula:. There are two schools of thought here. But I was astounded. Pero on November 8, at 1: Is there are substitte that can be used? Due to the length of this post, I decided not to cover the power supply in detail, but I may do so in the future.

Yes, Ohms, or less for the higher wattage transducers, is at resonance.

There are also compensation techniques cap from output to input of opamp to improve stability. The two Thiele networks are located close to the speaker output terminals.

The components on the PCB rbidge match the schematic above. Real part of impedance is minuscule, just the leads and solder mostly. Your LM article is fantastic.


A lot of effort obviously went into this. I will add a comment to this post: Can you help please. Howeveris it possible to go directly to EDA with info you posted for the amplifier board? I do believe a carefully planned lm using quality not expensive components with suitable source, volume control feeding decent speakers is difficult to beat.

Gridge, I was wondering if you could state the specifications of your amp, distortion and noise characteristics so it can be compared to other LM designs, so see if one needs to improve anything. So the silkscreen is correct….

A Complete Guide to Design and Build a Hi-Fi LM3886 Amplifier

Could you please add a print stylesheet to the website, where all the unnecessary stuff navigation, newsletter subsciption, social links, footer, etc is hidden and the content column has full width? Sorry to hear that… Try checking your spam folder. A person with or without electronics knowledge can follow this quite easily. George on December 8, at 8: Anindo Ghosh 46k 7 84 At the end I wire up the amp so you can hear what it sounds like:. briddge

DIY BPA 6x LM W audio Amplifier

You seem to know what you are doing as well as having a lot of experience. I looked all over for it and cannot find it. bridhe

Where would i put in bridgge stereo potentiometer for volume control Reply. Though I have no expertise in Physics, was able to understand the technical things in this article.


PA – 3x LM PCB assembly guide

Click on the image to edit the schematic or change component values. Or is it just because the part is only manufactured like that by Mundorf? My suggestion would be to not just follow the instructions, which are very well explained, but to take full advantage of the instructions as a starting point to a better understanding of exactly what each component is doing.

Bob Pendergast on April 3, at Firstlyif we want a volume control for this amplifier, how we will achieve it? Bearing in mind most is subjective, though differences between components of different materials do have a definite measurable difference e.

Dave on September 6, at I can use it, no? Your email address will not be published. Bridte started with 1. Patrick on December 21, at 5: Success with the build, Ed Reply. Package is still on ship. I agree to let Circuit Basics store my personal information so they can email me the file I requested, and agree to the Privacy Policy Email me new tutorials and very occasional promotional stuff: Commonly available through Moser and DigiKey.

Toivo on April 17, at 6: I think this is an omission in the article.