the.com/resistor
the unsung bouncer of electronics, throttling electrons so your gadgets don't gloriously combust.
means A circuit component that opposes the flow of electric current, dropping voltage and limiting how much current passes through.
from From 'resist' plus the agent suffix '-or' that turns a verb into the thing that does it (compare 'conductor,' 'capacitor'). 'Resist' came through Old French 'resister' from Latin 'resistere' — 're-' (back) plus 'sistere' (to take a stand, to halt), so literally 'to stand back against.' A resistor, fittingly, is the part that stands its ground against the current.
- color code
- stripes spell out resistance like a tiny barcode
- job
- converts excess electrical energy into pure heat
- omnipresent
- billions ship daily, smaller than a grain of rice
- first values
- named ohms after Georg Ohm's 1827 law
carbon film resistor — thin carbon layer on ceramic tube, invented 1950s, most common resistor type in electronics
wirewound resistor — nichrome wire coiled on ceramic form, used in power supplies and high-precision applications
thick film resistor — resistive paste on ceramic substrate, dominant in integrated circuits since 1960s