USB Reading Lamp
USB reading lamp is powered using USB port. The USB port provide 5 v and 100mA which is sufficient for this circuit. Cut the one end of the USB cable…
USB reading lamp is powered using USB port. The USB port provide 5 v and 100mA which is sufficient for this circuit. Cut the one end of the USB cable…
RESISTOR COMBINATIONS When we do not get specific resistor values we have to either use variable resistors such as potentiometers or presets to obtain such precise values. Pots are too…
10 Stage LED Sequencer Components IC1- CD4017 IC2- NE555 C1 – 1μ C2- 0.01 μ R1 – 470 Ω R2 – 100 KΩ R3- 100 Ω LED1-10 – RED LED 9volt DC…

Below is the circuit for variable dc power supply R1- 240 Ω R2- 5K VR R2 can be replaced by fixed value resistor for fixed power supply. Following formula can be…
This circuit will drive a 40 watt fluorescent or two 20-watt tubes in series. The transformer is wound on a ferrite rod 10mm dia and 8cm long. The wire diameters…
12v LAMP Dimmer Parts IC 1 – NE555 Transistor – 2N2955 -1 Resistance – 1k(2 no.), 100 Ω Variable Resistance – 50k Capacitor – 0.1 µF Diode – 1N4001 –…
Today LED has become an integral part of consumer electronics. LED TV, LED Display, LED Lights and so on. These are becoming very popular because of there low power consumption.…
Windows default share C$, D$ etc are recreated on machine restart or restarting the server service. To remove these share we can add a batch file which will remove the…
If you are using perfmon tool in windows, you may sometime want to save the data for future analysis. To accomplish this you need to follow the following steps. …