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Question

IC LM309 Voltage regulator provides a fixed positive ______ output

The correct answer is

+5 V

LM309 Voltage Regulator Function

The Integrated Circuit (IC) LM309 is a popular and simple-to-use three-terminal voltage regulator. Its primary function is to provide a stable, fixed positive voltage output, regardless of changes in input voltage or load conditions, within its specified operating range.

LM309 Output Voltage Specification

The LM309 series regulators are specifically designed to output a fixed positive voltage. Based on the standard specifications for this component, the LM309 provides a fixed positive +5 V output voltage. This makes it suitable for various digital logic circuits (like TTL) and other electronic applications that require a reliable +5V supply.

Key Features of LM309

  • Provides a fixed positive output voltage.
  • Typically requires minimal external components for operation (often just an input and output capacitor for stability).
  • Designed for use in a wide range of applications.
  • The specific model LM309 ensures a consistent +5 V output.

Therefore, the LM309 voltage regulator IC is known for delivering a fixed positive +5 V output.

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Important Questions from Zener Diodes

  1. The Zener resistance of a Zener diode, which exhibits 50 mV change in V zfor a 2.5 mA change in I zis _________.

  2. The device used for voltage regulator is

  3. Zener diode works under which region of V - I characteristics of the semiconductor diode?

  4. Which of the following diodes operate(s) in reverse breakdown region?

  5. In a linear IC voltage regulator, series pass transistor always operates in _____ region.

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