A Schmitt trigger circuit shows two distinct signal input levels for turning the circuit ON and OFF.The difference between the Von and Voff voltages called hysteris Schmitt triggers are useful in conbverting slowly rising waveforms into fast rising ones and in relay like application.
The circuit shown here uses a 741 with positive feedback via R5,R6 [...]
This simple circuit allows you to record any IR remote control signal on your PC, and then play it back. This is particularly useful if you want to control appliances such as TVs, VCRs, CDs etc. from your computer. The device simply connects to the parallel port of your PC. You can also use this [...]
Currently we use the same computer. Most are connected to an outlet with a switch to turn off with the easier to use. But when we turn off the switch, plug it in short strokes will be.Surge current flows into. This may result in damage and lost a hard drive. Therefore require a delay for [...]
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