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embedded-systems

Explaining the voltage spike when current through a coil is switched off

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Taught in

Requires

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Local knowledge map

Local knowledge map

Powering a DC motor from its own supply with a shared ground,… Protecting circuits with fuses, series resistors and TVS… Using an NPN transistor as a low-side switch and… Driving a relay coil safely, with a flyback diode, and reading… Using diodes for one-way flow, flyback protection,… Explaining the voltage spike when current through a coil is… Choosing switch types, reading a potentiometer as a… Sizing an LED's series resistor from supply, forward voltage, and… Smoothing PWM into a steady voltage with an RC low-pass filter,… Using a logic-level N-channel MOSFET as a low-side switch: gate… Computing an RC time constant and using the 63% and 5τ rules for… Explaining what a capacitor stores, polarity, and why… Using V = IR to find a missing voltage, current, or resistance

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Solid arrows are required prerequisites; dashed are recommended or helpful. Lower rows are more foundational. Click any box to jump to that concept.