Archive for the ‘diy’ Category

Power Amplifier Hum Solution, Thump Grounding Problems

There are numerous resources on the internet to build a power amplifier Gainclone. I have successfully built 4 of them without any dramas, except on one area: Hum and Thump. These can be minimal but in a very quiet night can be very disturbing. My latest build had hum audible at 10cm which is low [...]


Build Gainclone Power Amplifier LM3875 LM3876 Simply and Powerful with Schematic and PCB Layout

The chip on which the Gainclone amplifier is based, a Type LM3875 or LM3876, is a member of the Overture family from National Semiconductor, All members of this family are pin-compatible and mutually interchangeable. They are typified by an internal protection called SPIKE. In practice, the diftection ference between them is the power output. The [...]


Crestron PT-AMFMXM AM FM XM Radio Tuner for Prodigy Multi Room

Crestron PT-AMFMXM, the AM, FM, and XM radio tuner for Prodigy systems. The PT-AMFMXM includes one AM FM and one XM radio tuner, which can be individually tuned and distributed to any room in the house. With the PT-AMFMXM, any Prodigy touchpanel, Apple iPhone, iPod Touch or iPad can display station presets and program guides [...]


Gigabyte GA-X58A-UD9 Performance Motherboard with iPad, iPhone and iPod Touch Charging, Blu-ray Playback Outputs and Dolby Home Theater Audio

GIGABYTE GA-X58A-UD9 X58 chipset motherboard delivers “utmost system stability and overclockability” by providing maximum power delivery through the company’s new 24 phase Unlocked Power design.
Other benefits include 4-way PCI Express 2.0 graphics support for both NVIDIA SLI (with 2 nF200 SLI bridges) and ATI CrossFireX, DDR3 memory support, seven PCIe 2.0 expansion slots and support [...]


I-O Data LCD-DTV223XBE offer 22-inch LCD Monitor with TV Tuner HDMI Ports and S-Video

The giant Japanese electronic data with new OJ 22-inch LCD Monitor, LCD DTV223XBE is designed for Japanese customers looking for a new LCD monitor to use at home or office. This is the new display device is now available in the market price of 39,800 Japanese yen or about $ 428.
IO-Data [...]


LM4702 with 2SK1058 2SJ162 MOSFET Hi-Fi Amplifier 300 Watt Circuit and PCB Layout

National chips with pair solid states 2SK1058 / 2SJ162 lateral MOSFET on the recommendations of the group, focuses on the basis of 115mA bias current. To ensure this, as well as gate bias is set resistors configured. I recommend it to my satellite and 110mA bias current (hot), I keep level. Moreover, the circuit gain [...]


DIY Home Theater Movie Screen Outdoors

DIY theater in your home and all costs, but you know what would be even cooler than that? What about the outdoor theater? Sounds pretty expensive is not it?
Well, thanks for the guys over at Electronic House can now be fully functiong outdoor theater for only $ 600. To do this they used the Disney Inflatable Outdoor [...]


DIY Audio Hybrid Gainclone Amp ECC88 E88CC Tube Buffered LM-3875 Gainclone Amplifier

This was caused mainly by a slow voltage increase on the ECC88 cathode, where the LM-3875 GainCone Amp input cap was connected, partly due to the slow charging of the filter caps and partly due to the slow heating of the tube. To get around this problem, I decided to add a “delay-on” circuit that [...]


Samsung Releases v1.5 Update Ready to Download for BD-UP5000 Blu-ray Player, Fixes Avatar Blu-ray Playback Issue

Samsung releases v1.5 firmware update ready to download for BD-UP5000 blu-ray player, fixes Avatar blu-ray playback issue.
The Samsung BD-UP5000 Blu-ray player has finally received its latest firmware update version 1.5. The v1.5 update promises to improve “playback compatibility in some movies” such as the Avatar Blu-ray playback issue that was non-playable due to the new [...]


WonderMedia SmartStream WiDi Wireless Adapter Computer Display on TV

WonderMedia, Taiwanese Company, has introduced their innovation, the WonderMedia SmartStream WiDi adapter. It is a wireless media adapter that based on WonderMedia PRIZM system-on-chip (SoC) and uses Intel Wireless Display (WiDi) technology.
It makes easily to view and control anything that’s on computer on across a room through your TV. The WonderMedia SmartStream WiDi wireless adapter [...]


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