unit 1: science of electricity & electronics

itp 150 - prof. djassemi - cal poly

bioelectricity - a.k.a. electrochemistry/Galvanism

• electricity produced by chemical action

• stepping stone to development of electrochemical battery

• ex: electron flow causing muscle spasms to frog legs

Allesandro Volta’s “Voltaic Pile”

1st electrochemical battery that could continuously provide an electrical current (electricity)

electricity vs. magnetism relationship

• believed to be opposite states of same thing

• discovered by Hans Christian Ørsted when he observed that an electrical current in a wire deflected a nearby compass needle

inventors of electrochemical batteries & the radio

• electrochemical batteries: Allesandro Volta

• radio: Guglielmo Marconi

electrical vs. electronics

• electrical: any devices that uses electricity (electrons)

  • most electrical components tend to be larger, use higher voltages (over 110V) & AC (alternating current)

• electronics: