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Compared with other lights, LEDS are quite fragile. Hence, adverse environmental conditions can create high risks for surges and other sources of damage. As a result, it is important that LED strings receive the proper protection. Bharat Shenoy reports...

Background My wife and I are expecting a baby soon and a family member has given us their previously-used, thoroughly cleaned electric breast pump. The pump came from the vendor with a "medical grade" 120V AC to 9V DC power supply (i.e., a "wall wart...

High-end AV manufacturer Meridian Audio, has just announced their first new AV Preamp in 20 years. The G65 will be available in December at a fairly "reasonable" price of $7,000 or $10,000, with the company's HD621 HDMI Audio Processor hub. Here's the...

I am designing a lab power supply. I intended to have a range of 0-30v up to 2A. So I went out and bought a 24v-0-24v transformer with rating of 2A. I chose 24v because that gave me 33v peak DC voltage after rectification, I I kept about 3v for voltage...

High-end speaker-maker KEF recently announced its new X300A Wireless, a desktop stereo speaker system offering the same performance as the original X300A speakers with the added convenience of wireless streaming via Airplay or DLNA from most Apple or...