Resistors
Components that set current and voltage using resistance; specified by value, tolerance and power rating.
Beginner
Key specifications:
- Value — in ohms, from standard E-series (E12, E24, E96).
- Tolerance — ±1 %, ±5 %…
- Power rating — ¼ W, ½ W, 1 W…
- Temperature coefficient — ppm/°C.
Types: carbon film (cheap, general purpose), metal film (precise, low noise), wirewound (high power), thick-film SMD (most PCBs). SMD sizes: 0603, 0805, 1206 (inch codes).
Sub-topics (2)
Resistor Colour Code
Read a through-hole resistor's value from its coloured bands.
Beginner♥ 0🔖 0💬 0
Potentiometers
Variable resistors with a sliding wiper — used as adjustable voltage dividers.
Beginner♥ 0🔖 0💬 0
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