Testing SCR using a multimeter. A multimeter can be used to test SCRs quite effectively. The first procedure is to check the diode action between the gate and cathode terminals of the SCR. This test is just like what you have done in the case of testing a silicon diode (see testing a ...
Beginning with the 4rth requirement, the least expensive power supply could be built using a mains dropper resistor. The reality that the circuit contains floating 'Live' AC is not important here since it doesn't require to be fine-tuned once constructed. Considering that the basic circuit nece...
Make a simple tester on a piece of Plywood to test the components quickly before making a circuit. It can be easily built using drawing pins, LEDs, and resistors. The tester board can be used to check, Diodes, LED, IR LED, Photodiode, LDR, Thermister, Zener diode, Transistor, Capacitor...