Most Apple and Windows PCs can be put to `sleep` or `standby` mode while not in use rather than shutting them down completely. This mode has the advantage thatwhen they wake from sleep via keyboard or mouse activation, the operating systemrestores all previous work sessions within seconds. There is no need to restart the computer and then reopen the
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files being worked on. Sleep or "standby" mode is a useful feature on myWindows Media Center, which uses a dedicated Windows 7 PC. It turns on and off automatically for scheduled TV program recordings, or for downloading the daily program guide. I also use its Media Center remote control to turn the PC and TV on or off from a comfortable watching distance. Sleep or Standby mode requires that peripheral devices (TV, monitors, speakers, printers, etc. )attached to the PC continue to draw standby or "phantom" power. The disadvantages of standby power relate to the wasted energy used. As standby power is reduced, the disadvantages become less. With the adoption of the One Watt Initiative by many countries, standby energy use is being reduced on new equipment, but there are still millions of older appliances and peripherals out there that often use ten watts or more. I had been curious about the power consumed byvarious household electronic devices and appliances while they sit idle. So I bought a Kill-A-Watt meter from Amazon for$20. 31 including shipping. Read what Consumer Reports has to say about this device. Using this simple device I took power measurements on various "dormant" appliances and computer setups around the house with surprising results. For example, I found that PC peripherals like speakers, printers and other accessories draw a not insignificant amount of idle power when not in use Using the...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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