Free electronic circuit design and schematic diagram
This is a Stereo VU Booster circuit. In this circuit, shown in the schematic diagram, transistor FCS9014 is used. Actually you can use almost any type of small signal NPN transistor. This transistor usually used for regulator and pre-amp circuit. Here is the schematic diagram of the circuit: The schematic diagram show only one channel, so you have to build […]
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To provide rapid motor speed changes and motor direction reversal, four outputs drive a MOSFET H-bridge. N-channel devices are the lower rail power MOSFETs and P-channels are the upper MOSFETs. All of them are driven by the TC4469. A small series resistor helps prevent gate oscillation and slows transition time in the lower rail devices, helping the upper device to […]
Read moreThe video below explained us about how to wire a relay. We already know that there are two components inside a relay, switch and an electromagnet. Here’s how to wiring a relay. First, put the negative or ground to one into the magnet. Second, put on other wire to power switch inside the car to the positive of the magnet. […]
Read moreThe video below tell us about how does a relay work. How does a relay work is like this: there are two components on a relay, switch and an electromagnet. When the electromagnet is powered (by turn on the switch inside the cockpit) then the magnet comes alive. When the magnet comes alive, the magnet will pull the switch closed. […]
Read moreBelow is video which tell us about relay. This video give us an example the use of relay if we want to install an additional electric items in car such as lamp, horn and fan. Relay is used to prevent the circuit overload if we put that all together. Relay is easy to understand and relay is also easy to […]
Read moreThe wiring diagram is important to troubleshoot the problem in the car. This video explains how to use wiring diagram to fix a problem. The wiring diagram contain the information of wiring path of the application in the car like heater, AC, Tachometer and so on. First, the wiring diagram must be fotocopied. Then give the highlight where the problem […]
Read moreThis is a video about how to tell if the car is positive or negative ground. This video explains step by step how to detect the positive or negative ground. To know the ground of the car is very important to determine where the application is wired. To detect the ground of the car is easy, it use the battery […]
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