Electronics

General electronics projects. Reverse engineering of industrial electronics. Smaller projects that you can make at home or for school.

Chinese 2x50W Bluetooth Amplifier, Or Is It? A Poor Abused TDA7492P Design

2 Comments / Electronics / /

I wanted a small Bluetooth amplifier for my work shop and bought some cheap TDA7492P bare-board versions from Ebay. Luckily there is other good Bluetooth amplifiers! This poor TDA7492P design is over-advertised and abused enough that I requested my money returned from the seller. Discussion of this review: https://highvoltageforum.net/index.php?topic=1057.0 Not a paid review, bought for […]

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After Cleaning, What I Found… – End of Isolation, Day 42

1 Comment / Electronics, Funny / /

I have turned my whole workshop around, been in every drawer, box, crate, container, shelf and cupboard. I sorted a lot of stuff, re-found a lot of things and threw nothing out! I start work again, it is no longer required to work 100% from home, but still to be planned to do so if

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Whats In The Boxes?! – Isolation, Day 40

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Sorting boxes, sorting containers and generally just a good way to reuse old packaging materials for storage solutions. The black suitcase like boxes comes from a special calibrated sensor and the small drawers are from fuses for mains electrical panels. How many mystery boxes do you have in your work shop?

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Variable Isolation Transformer – Isolation, Day 30

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Variable Isolation Transformer are different from a variable transformer, like a variac. Isolation from mains gives greater safety. Teardown of a variable transformer, which provides a variable voltage and isolation. Single phase 1x250V @ 3A.

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Variac, Auto-, Vario- and Isolation Transformers – Isolation, Day 28

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I give a short introduction to the differences between autotransformers, variable autotransformers and variable transformers. I show my collection of 7 variac transformer / variotransformer in the range from 1x260V @ 2A to 3x400V @ 25A along with a 3x400V 10kVA isolation transformer. 3x400V @ 13A Variac demonstration with data monitor: https://www.youtube.com/watch?v=PqeLLLZTBb8 You might wonder

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Hardware, Materials, Salvaged Fittings and Much More – Isolation, Day 26

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Mounting hardware, fittings, insulation materials, acrylic, fibre-glass, bits and pieces. All salvaged from machines, equipment and other high voltage related material. I want to reuse all this in my own projects and experiments. I started spring cleaning my work shop and I have come across so many components. Its all in various bins, boxes and

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Fuses In Power Electronics and Other Fuses – Isolation, Day 24

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This video shows the different fuses, breakers, MCB, RCD, melting fuses and automatic fuses that I have. I started spring cleaning my work shop and I have come across so many components in various bins, boxes and drawers that I finally had some time to get it sorted and put together in groups. High Voltage

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Future Projects, Teardowns and Power Electronics – Isolation, Day 22

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A look into what the future brings of projects, teardowns and power electronics. Simple, complex, small and large, there will be it all, stay tuned! In this tour around the electronics lab and work shop, we get to see the tube amplifier, Arduino temperature logger, GPS stratum 0 clock, Tesla Coils, x-ray machines, high power

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