bfg ls-550 power supplyBFG LS-550 power supply is part of BFG’s LS Series which features a typical efficiency of up to 85% so more power is converted to DC than many other power supplies on the market.
BFG Thermal Control Technology ensures that the unit runs as quietly as possible by varying the speed of the fan in response to load and temperature.
Single +12V rail, over-volt, over-current and short circuit protection provides rock solid reliability and safety.
LS550 power supply works with AGP, PCI, PCI Express®, includes two PCI Express Connectors for Dual Graphics Card Support and features new 8-Pin PCI Express Connector. continue reading…

OCZ ModXStream Pro / 500~600W~700W / EZ Mod Cable Management / Active PFC.
The ModXStream Pro Series is the superlative solution for driving today’s gaming systems, and is NVIDIA® SLI™ certified to power dual graphics. Professional-grade yet designed with gamers and modders in mind, this PSU is stable, robust, and sports a sleek look and compact form factor.
Kept ultra-cool with a load-controlled 140mm fan, the ModXStream Pro was engineered to be the quietest PSU available and eliminate distracting noises from your PC. 80+ Certified, featuring up to 86% efficiency at typical load, this leading-edge power supply remains rock solid and powerful while retaining superior efficiency under load. continue reading…


thermaltake xt 850 power supplyThermaltake Toughpower XT 850W is the most advanced and no-compromise power supply. Each power supply is individually tested to ensure utmost compatibility with all gaming processors such as Intel® Core™ i7 or AMD Phenom™ II series and graphic cards from AMD or Nvidia®.
Toughpower XT Cable Management
Thermaltake Cable Management Technology allows users to only use the cables needed from the power supply that reduces amount of cable clutter within the computer to improve cooling and reduce system noise. continue reading…

This is a cheap DC Voltage Doubler Circuit diagram, which requires a few components and will deliver 10V from a 5V power supply. If the oscillator must be built from a non-functional gate then is required 2 more components: R1 and C3.
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This AC to DC converter circuit is capable to convert an alternative voltage from 70 – 260 Vac into a DC voltage from 180 to 250 Vdc.
To achieve this convertion we use a rectifier MC34161 as a voltage doubler at low input voltages and as a classic rectifier at high input voltages.
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