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The Output Voltage at Drain Q1 of MOSFET refers to the voltage measured at the drain terminal of transistor Q1 in a differential circuit configuration. This voltage is calculated based on the output resistance and total current flowing through the circuit.
The calculator uses the formula:
Where:
Explanation: The negative sign indicates that the drain voltage is inverted relative to the product of output resistance and total current, which is typical in many MOSFET amplifier configurations.
Details: Accurate calculation of drain voltage is crucial for designing and analyzing MOSFET amplifier circuits, ensuring proper biasing, and predicting circuit performance in various electronic applications.
Tips: Enter output resistance in Ohms and total current in Amperes. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why is the drain voltage negative in this calculation?
A: The negative sign indicates phase inversion, which is a characteristic property of common-source MOSFET amplifier configurations where the output signal is inverted relative to the input.
Q2: What factors affect the output resistance in MOSFET circuits?
A: Output resistance is influenced by the MOSFET's channel length modulation, bias conditions, and the specific circuit configuration used.
Q3: How does total current affect the drain voltage?
A: The drain voltage is directly proportional to both output resistance and total current. Increasing either parameter will result in a larger magnitude drain voltage.
Q4: Can this formula be used for all MOSFET configurations?
A: This specific formula is primarily applicable to common-source amplifier configurations and differential pairs where Q1 represents one side of the differential circuit.
Q5: What are typical values for output resistance in MOSFET circuits?
A: Output resistance values can vary widely depending on the specific MOSFET type and circuit design, typically ranging from hundreds of Ohms to several kilo-Ohms.