Category: Video Tutorial

This is a video of wiring 555 IC for PWM. The video shows how to wire the 555 chip for PWM. The pin 1 is connected to ground. pin number 2 is connected to pin number 6. Next, pin number 3 connected to the output. pin number 4 is connected to VCC. Pin number 6 is connected to 7 and […]

This is a video about how o make a PCB. This video shows step by step in making a PCB. There are 13 step in making a PCB they : 1. develop schematic sing eagle layout editor 2. Convert to board layout 3. Optimize board layout 4. Print layout to peel-n-press paper using laser printer 5. Clean copper clad PCB […]

This is a video about light switch wiring. Light switch wiring is easy, but remember to turn off the circuit breaker to prevent the electric shocking. The switch has two screws and the green grounding screw. Connect the the wires on the two screw and the bare ground wire to green ground screw. Here is the video:

This video is Wiring Light Fixture. First thing that is must to do is turn off the circuit breaker to prevent electric shock. We can also use the tester to make sure the power is off as well. Then connect the wires on the fixture with the wires on the box. The white wire on the fixture is connected to […]

This video shows how to having fun using the relay. This video talks about how to make buzzer using relay. The pin configuration of the relay is shown in this video. In this video, the relay that is used is standard 24V relay. When the power is applied on the relay, the relay will buzz. The frequency of the relay […]

This is a relay and contactors basics video tutorial. This video shows how relay and contactors work. The relay is an electromechanical switch it works an electromagnet. There are three electrical connection on relay, they are common, normally close and normally open. There is a small contactor inside relay. Besides that, inside relay there is a coil. The coil can […]

This is a video tutorial about DC motor speed controller using power op-amp. This video shows how to control dc motor speed using power op-amp. In this video the op amp is configured in non-inverting configuration. When the power supply is on, the LED will on and when the potentiometer is turned, the speed of dc motor will gradually increase. […]