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embedded-systems

Using V = IR to find a missing voltage, current, or resistance

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Local knowledge map

Local knowledge map

Applying Kirchhoff's voltage and current laws to check or solv… Choosing a linear or switching regulator from dropout,… Choosing between an oscilloscope and a logic analyzer, and… Choosing switch types, reading a potentiometer as a… Driving addressable LEDs: data timing, power budget per LED,… Estimating average current and battery life from a duty-cycl… Explaining open-drain outputs and sharing one wire between… Explaining the voltage spike when current through a coil is… Measuring current with a meter in series (burden voltage) and… Reading a button on a digital input with the internal pull-up,… Reading resistor values (E-series, color code),… Sizing an LED's series resistor from supply, forward voltage, and… Smoothing PWM into a steady voltage with an RC low-pass filter,… Computing an RC time constant and using the 63% and 5τ rules for… Computing power with P = VI and checking it against a part's… Finding equivalent resistance, and the current and voltage o… Measuring voltage, current, resistance and continuity safely… Using a pull-up or pull-down resistor to give an input a… Using V = IR to find a missing voltage, current, or resistance Explaining what a capacitor stores, polarity, and why… Reading V_IL, V_IH, V_OL, V_OH and noise margins for a logic… Reading a schematic's symbols, nets, supply and ground, and… Setting up a low-voltage electronics workspace… Describing current as the flow rate of charge, in… Treating voltage as a difference between two points, measured… Reading and converting SI prefixes and units: milli, micro, kilo,…

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