How to analyze any diode circuit #electricalengineering #electronics

This is how you analyze any diode circuit.

For this circuit with two ideal diodes, resistors, and batteries, the objective is to find the output voltage 𝑣ₒ in terms of the input voltage 𝑣ᵢ.

𝐒𝐭𝐞𝐩 𝟏: Establish the diode turn-on conditions. Before any current flows in the circuit, there are no voltage drops in the resistors, and so we can replace them with short circuits. Doing so, we can apply KVL to relate the diode voltages to the input voltage, and thereby conclude the minimum/maximum value of 𝑣ᵢ that turns on each of the two diodes.

𝐒𝐭𝐞𝐩 𝟐: Bring back the resistors, and analyze the circuit for the range of values of 𝑣ᵢ for which both diodes are off. The diodes would behave as open circuits. In our example, this leads to the input voltage being seen across the output terminals, and so 𝑣ₒ = 𝑣ᵢ in this region.

𝐒𝐭𝐞𝐩 𝟑: Analyze the circuit for the range of values of the input voltage for which only one of the two diodes is conducting. Ideal diodes behave as short-circuits when forward-biased.

𝐒𝐭𝐞𝐩 𝟒: Analyze the circuit for when the other diode is conducting.

With these, we have the complete voltage transfer characteristic (VTC) of the circuit. In other words, we know the output voltage for 𝘢𝘯𝘺 value of the input voltage. It can be DC, sinusoidal, triangular, square-wave — anything!

#electrical #electricalengineering #electronics #electronicsengineering