General electronics projects. Reverse engineering of industrial electronics. Smaller projects that you can make at home or for school.
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 run outside of its server enclosure. A simple bridge between control pins next to the […]
Server PSU Hack – EMC2 API4SG10 12VDC 300W From a Dell PowerEdge M1000E Read More »
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 after I saw the photage. As seen in the pictures on the forum link there
750+ Watt Turbo Fan Cluster Project From a Dell PowerEdge M1000E Server Read More »
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 supply hacks. A simple bridge between pin 31 and 34 is required and it is
Server PSU Hack – HP DPS-800GB A, 12VDC 1000W Read More »
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 camera that I was able to get at 100$ on offer. This is not a
100$ Thermal Camera With 32×32 Pixel. HTi HT-02D Unboxing And Test Read More »
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 show how good it compares to the promised performance of the TDA7498 datasheet. My own
Chinese 2x100W TDA7498 Amplifier – Test and THD+n Measurements Read More »
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 other teardown videos of 20 kVA UPS, 30 kVA UPS or even up to 60
Teardown of a 5 kVA / 4 kW Eaton EX5RT UPS System Read More »
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
Chinese 2x50W Bluetooth Amplifier, Or Is It? A Poor Abused TDA7492P Design Read More »
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
After Cleaning, What I Found… – End of Isolation, Day 42 Read More »