My Circuit

The circuit can be used for generating delays at a desired rate. The On time of the relay can be controlled by adjusting the Pot VR1 while the pot VR2 may be used to decide after how long the relay responds once the input trigger is fed by the switch S1.  The parts list is enclosed inside the diagram. Sourced by : Streampowers

Description How often does it happen that you close down Windows and then forget to turn off the computer? This circuit does that automatically. After Windows is shut down there is a ‘click’ a second later and the PC is disconnected from the mains. Surprisingly enough, this switch fits in some older computer cases. If the circuit doesn’t fit then it will have to be housed in a separate enclosure. That is why a supply voltage of 5 V was selected. This voltage can be obtained from a USB port when the circuit has to be on the outside of the PC case. It is best to solder the mains wires straight onto the switch and to insulate them with heat shrink sleeving. C8 is charged via D1. This is how the power supply voltage for IC1 is obtained. A square wave oscillator is built around IC1a, R1 and C9, which drives inverters IC1c to f. The frequency is about 50 kHz. The four inverters in parallel power the voltage multiplier, which has a multiplication of 3, and is built from C1 to C3 and D2 to D5....

Company intends to sell of PC business under the VAIO brand. In a press statement released by Sony, the company said that it is selling off its VAIO brand and concentrate more on smartphones and tablets, citing “drastic changes in the PC industry”. Japan Industrial Partners (JIP) will take over the business, with the deal expecting to be completed by the end of July this year.  The statement also said that Sony will “immediately cease planning, design and development of PC products”. It also said that manufacturing and sales will be discontinued after they release their Spring 2014 lineup. Sony also assured customers that they will still get after sales support even if the deal has been completed. Always associated with elegant design, the VAIO line of notebooks has always been one of the preferred brands by some, including Steve Jobs – to which he even envisioned VAIOs running on Mac OS X.