What are applications of automatic battery charger using scr?

Answer 1

A Silicon Controlled Rectifier, commonly referred to as a SCR, is a semiconductor that allows current to flow through it only after a momentary positive voltage is applied to the gate. It also converts AC energy to DC energy. AC energy, or alternating current energy, sends the electrons in pulses, not creating a direct flow of electrons around the circuit. DC energy, or direct current energy, sends electrons in a steady flow around the circuit. A Silicon Controlled Rectifier has three leads that include the cathode, the anode, and the gate. Their main purpose is to ensure that electrons are flowing the correct way and to limit the amount of electrons that flow through. Before the gate is "opened", or has been touched by a positive current, the Silicon Controlled Rectifier acts as a wall and does not allow electrons to flow through. In a circuit, when wire leads are connected to the anode and the cathode of the Silicon Controlled Rectifier and an open wire lead has potential to be connected to the gate, it has the ability to stop almost all electrons from passing through or to let electrons pass through by touching the open wire lead to the gate. The three leads of the Silicon Controlled Rectifier play a very important role in how it works.

An anode is a lead that the current flows into, and a cathode is a lead where the current flows out of. They send the electrons the correct way around the circuit. They also can stop the flow, or continue the flow, of electrons throughout the circuit. When they are connected, but no positive current has been given to the gate, they act as a break in the circuit that allows little light to get through. When electricity is applied to the gate, the electrons flow through the circuit the correct way and in the positive direction.

The gate is what allows the Silicon Controlled Rectifier to turn on and send electricity through it. With a simple, direct touch of electricity, the gate opens and allows the electrons to flow through. The only way to stop the constant flow of electrons after the gate has been touched is to stop the circuit or take out the power source. There is no way to turn off the Silicon Controlled Rectifier after it has already been connected momentarily to a positive current of electrons. The gate is what allows the electrons to move directly throughout the circuit, and it cannot be stopped until the power source is disconnected or it shortens out.

One example of a technology that a Silicon Controlled Rectifier is used for is a car alarm. When the car is in the state of being locked, and the window is smashed or the door is opened, it sets the alarm off. When you shut the door, the alarm still goes off, because there is no way to cut the power source without the keys to the car. The robber that broke into the car has no way of stopping the alarm unless he or she finds a way to disconnect the power source to the alarm. This is very useful because the alarm will most likely continue to go off, so the owner of the vehicle can be notified of a potential break in.

Another example of a piece of technology that a Silicon Controlled Rectifier is used in is a battery charger. A SCR prevents