Physics · Electronics
What is the primary function of the discharge transistor (pin 7) in a standard 555 timer circuit?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To discharge the external timing capacitor when the output goes low.✓
- 2To charge the external timing capacitor to stop the timing cycle.
- 3To discharge the external capacitor to immediately restart the timing cycle.
- 4To charge the external capacitor to start the timing cycle over again.
Correct answer
To discharge the external timing capacitor when the output goes low.
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