ElectroMech Lab

Hi guys, here is very simple but useful circuit, which can be helpful when you work on laptop in Dark. Material : One LED, 5mm size, one resistor of 300 Ohm, one USB Connector wire, and other tools like soldering iron, cutter, wire etc. Steps 1-      Connect resistor one end to the longer pin(Anode) of LED with the help of solder (you can also connect them by twisting both the pins), Now we have two pins spare, one pin of resistor and another one short leg(Cathode) of LED. Read More... &nbsp

Simplest Electronics circuit Hi guys, here is the simplest circuit; it is consisted of a resistor, an LED, and a battery. Calculation is given below. Vs: 9Vdc. Voltage to the LED, let’s say 3Vdc, Current through LED 20mA. Through resistor voltage to be dropped: 9-3=6 Vdc. Current through resistor: 20mA. Resistor: V/I=6/20= 300 Ohm. This is very simple circuit, can be easily assembled. So try it. Normally is very simple for hobbyist and experienced circuit makers, but it can be a fun for new electronics hobbyist. Collect the following components One LED, 5mm size, one resistor of 300 Ohm, one 9V battery, and other tools like soldering iron, cutter, wire etc. 1- Connect resistor one end to the longer pin of LED with the help of solder (you can also connect them by twisting both the pins), Now we have two pins spare, one pin of resistor and another one is leg of LED. 2- Now connect the resistor spare end to the positive of battery and LED's to the