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## Electronics 101
How do components work in circuits? What are their symbols? What do they look like?
Some practical considerations about power supplies and use of fab inventory
connectors on circuitboards.
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###Outline.
- Basic concepts
- Current
- Voltage
- circuits
- sources of emf
- battery
- power supply.
- Connectors, wires, traces
- headers and connectors. Ribbon cable.
- Use of breadboards.
- Plug-in wires.
- Resistors and Ohms law.
- Resistors are not directional.
- how to measure a voltage
- how to measure a current.
- switches
- symbol and pictures
- pulldown circuit with switch and resistor.
- Circuits.
- Kirchoff's laws (conceptual discussion)
- parallel
- series.
- Diodes.
- Types: signal, zener, LED.
- IV curves.
- Calculating LED current.
- Regulators.
- Capacitors.
- basic concept. RC time constant. Time domain behavior.
- filtering. Frequency domain behavior.
- low pass (PWM to make analog out)
- high pass (coupling audio signals)
- filter capacitors on power rails.
- using capacitors as sensors. (brief discussion)
- transistors
- amplifiers.
- microcontroller (limited discussion)
- digital input
- input impedance.
- input pullup. Use in button circuit.
- digital output.
- output impedance.
- what can the ucontroller drive?
- things with high input impedance, like FET, Piezo, other ucontroller inputs.
- Current limit and driving LEDds.
- built-in amplifiers in microcontrollers.
- Inductors
- concept and behavior
- driving inductive loads - flyback diodes.
- Motor driver
- brief discussion of h-bridge and the necessity of bi-directional driving.
- description of the motor driver chip.
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