Hitachi 890-2430 Deuterium UV Lamp Test and Theory

This is a short walk-through on deuterium UV lamp theory and a test of the lamp in operation from its rather special power supply. PSU failed. Lamp failed. Complete fail. The lamp comes from the teardown of a Hitachi L7450 …

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DIY 30W LED Work Lamp From a Discarded Street Light

I found a discarded street light head at a scrap yard and wanted to give it a new life instead of being shredded. Re-use, re-purpose or re-invent. Do not just throw out stuff, see if you can use it in …

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Canon Ixus V70 Hack with CHDK for High Speed Photography

Turn your old compact Canon camera into a high speed photography camera with Canon Hack Development Kit I bypass the battery pack and make the camera run on a power supply, as the CHDK software takes a lot of CPU …

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Server PSU Hack – EMC2 API4SG10 12VDC 300W From a Dell PowerEdge M1000E

There are several other server power supply hacks available here on the site. Use the search in the menu to the right to find them. A guide on how to make the, EMC2 API4SG10 (Dell# 071-000-482) , server power supply …

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750+ Watt Turbo Fan Cluster Project From a Dell PowerEdge M1000E Server

This is 9! 12V/7A server fans built into a fan cluster with handles! It is time to wreck some havoc and play with fire and smoke! I did not realize just how much fire was sucked through the fans until …

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Server PSU Hack – HP DPS-800GB A, 12VDC 1000W

A guide on how to make the, HP DPS-800GB Rev. A, server power supply run outside of its server enclosure. Be sure to check out the related posts or make a search here on the site for other server power …

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100$ Thermal Camera With 32×32 Pixel. HTi HT-02D Unboxing And Test

There is a huge difference from the very cheap 8×8 pixel thermal cameras, to the 32×32 and up to the 160×120++. The price seems to quadruple with the pixel count. In this video I am testing the HTi HT-02D Thermal …

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Chinese 2x100W TDA7498 Amplifier – Test and THD+n Measurements

I wanted a small Bluetooth amplifier for my work shop and bought some cheap bare-board versions from Ebay. This TDA7498 design is over-advertised, but not as bad as other cheap bluetooth amplifiers from ebay. Test, frequency response and THD+n measurements …

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Teardown of a 5 kVA / 4 kW Eaton EX5RT UPS System

Teardown of a Eaton EX RT 5 kVA UPS model. The topology is a on-line double conversion with PFC (Power Factor Correction). The system is rated for a active power output of 5 kVA / 4 kW. I have also …

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

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 …

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