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Engineering · L3 · Transistor Switch — Off vs On States

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How the base current decides whether an NPN transistor is off (no collector current flows) or on/saturated (collector current flows freely) — the two states used for digital switching.

by @openstemUpdated Engineering
🔌 Base current?❌ Off✅ On / SaturatedNo collector current — switch open⚡ Collector current flows freelyToo smallEnough

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