This post is about refreshing some of the basics concepts in electronics which is being used by all electronic designers in daily work,
Ohm’s Law:
The amount of current through a conductor is directly proportional to the voltage applied across it for any given temperature.
Polarity of Voltage drop:
- Polarity of voltage drop is determined by the direction of flow of electrons.
- Negative (-ve) for electron entering
- Positive (+ve) for electron exiting
Kirchoff’s Voltage Law:
- Algebraic some of all voltages in a loop is equal to zero.
Kirchoff’s Current Law:
- Algebraic some of all currents entering and exiting a node is equal to zero.
Voltage Divider Rule:
- The source voltage (V) is divided across the resistors and the voltage drop across a particular resistor (Rx) is given as below,
Vx = V*(Rx/Rt)
Rt = Total Resistance
Vx = Voltage across the Resistor Rx
Current Divider Rule:
- The current (I) is divided among branches in a parallel circuit.The current in a particular branch is calculated as below,
In the reference Fig. current through R1 is calculated.
