Example of Diode Circuits-Electronic Circuits When the positive terminal of the DC source is connected to the anode (positive side) of the diode and the negative terminal to the cathode (negative side), the diode is forward-biased. In this stat… Continue reading

Example of Diode Circuits-Electronic Circuits
When the positive terminal of the DC source is connected to the anode (positive side) of the diode and the negative terminal to the cathode (negative side), the diode is forward-biased.
In this state, the diode acts like a closed switch, allowing current to flow through the circuit.
The voltage across the diode (V_D) is approximately 0.7V for a silicon diode.
The remaining voltage (V_R) drops across the resistor, calculated using Ohm's Law: V_R = I * R, where I is the current flowing through the circuit.
Reverse Bias:

If the polarity of the DC source is reversed, the diode is reverse-biased.
In this state, the diode acts like an open switch, blocking the flow of current.
A very small leakage current (typically in the microamperes or nanoamperes) may flow through the diode.
Applications:

Voltage Limiting: The diode can be used to limit the voltage across a load to a specific value.
Current Rectification: Although primarily used with AC sources, this circuit can also be used to rectify a pulsating DC signal.
Key Points:

The diode's behavior depends on its biasing condition (forward or reverse).
The voltage drop across a forward-biased silicon diode is typically around 0.7V.
The resistor limits the current flowing through the circuit.

Diode Circuits with DC Source

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