How To Test An Unknown Power Amplifier SAFELY

In this video, I go through the steps to safely test a built/rebuilt/problematic amplifier without blowing stuff up.
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[@NeoFireRaziel]

7:56: You remind me "Wakko", from "Animaniacs" 🤣 Best regards, nice videos!

[@AstrosElectronicsLab]

😆

[@SymbolTech21]

Definitely you need a more powerful transformer for this amp

[@AstrosElectronicsLab]

Not really sure what you mean; if you mean in terms of current, not really. The amplifier only draws around 2A at full power. If you mean in terms of voltage; you can't go any higher than +/-40V with current signal transistors.

[@SymbolTech21]

@@AstrosElectronicsLab the one you used on the video how many VA have that transformer?

[@AstrosElectronicsLab]

@@SymbolTech21 160VA

[@SymbolTech21]

@@AstrosElectronicsLab if it's 160va should be fine I don't know why I had impression from the video was looking quite a small size

[@AstrosElectronicsLab]

@SymbolTech21 nah, it's 110mm diameter, 3A secondary winding.

[@user-lo6ye5bx3t]

Hi there I have 1 question Which one is good for Heat sinks 1. Anodizing Or 2. Powder Coating For amplifiers around 200 watts per channel. Please reply Thanks

[@AstrosElectronicsLab]

The coating doesn't matter, as long as the material is aluminium (aluminum). Most heatsinks are anodized; however, I wouldn't use powder-coated as this can affect the heat transfer as it's basically a plastic (polymer). The surface where the devices mount, it'd be better if this was bare (natural); most effective heat transfer.

[@user-lo6ye5bx3t]

@@AstrosElectronicsLab thanks a lot I appreciate

[@AstrosElectronicsLab]

@@user-lo6ye5bx3t you're welcome