Computer · Voltage Regulators
In a Transistor Series Voltage Regulator, the 'pass transistor' is placed in series with the load. How does this configuration maintain a constant output voltage despite fluctuations in input voltage?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The transistor increases the ripple factor to stabilize the average DC value.
- 2The transistor acts as a constant current source that forces the load voltage to remain at the zero-reference level.
- 3The transistor switches on and off at a high frequency to average out the pulsating DC.
- 4The transistor acts as a variable resistor whose resistance is controlled by a Zener reference to maintain a constant VCE.✓
Correct answer
The transistor acts as a variable resistor whose resistance is controlled by a Zener reference to maintain a constant VCE.
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