TLE 90
Basic Electronics

Electronics is the study and use of electrical devices that operate at relatively low voltages by controlling the flow of electrons or other electrically-charged particles in devices such as thermionic valves and semiconductors. The pure study of such devices is considered as a branch of physics, while the design and construction of electronic circuits to solve practical problems is part of the fields of electrical engineering, electronic engineering and computer engineering.

For me, this subject is very difficult. But even though it is a very difficult I still passed it because I did all my best and I know our almighty God will help me to learn something from this subject and help me to passed it. This subject is more on projects, just like in making fullwave DC power supply.




This is a simulation of a simple DC power supply based on a full-wave rectifier.

Use the left slider to adjust the AC line voltage and the right slider to adjust the DC current drawn from the power supply. You can also change the filter capacitance and the transformer turns ratio. Just click on the value with the mouse pointer and edit like any text field.

The transformer steps the line voltage up or down by the "turns ratio", which can be changed. One of the rectifier diodes conducts during the positive half-cycle and the other diode conducts during the negative half-cycle, allowing the filter capacitor to charge during both half-cycles. The load current slightly discharges the filter capacitor between adjacent cycles. The resulting voltage fluctuation (ripple) is one-half what it is with a half-wave rectifier.