Circuit A complete path along which electrons flow

Circuit – A complete path along which electrons flow (negative to positive) § 3 basic types § § Series Parallel Series-Parallel Combo

Series Circuit Ø Components (resistors, LED’s, batteries) are connected in a line, one after another. Ø A continuous path for electrons to flow Ø Series Circuits are very common

Series Circuits Ø In a series circuit, if a lamp 'blows' or a component is disconnected, all the components stop working. Ø If you put more lamps into a series circuit, the lamps will be dimmer than before. Ø Uses less wiring than parallel circuits.

Parallel Circuits Ø Are arranged so other parts continue to work even if one part fails. Ø Common in TV’s, Radios, and stereos Ø The different components are connected on different wires.

Parallel Circuits Ø In a parallel circuit, if a lamp 'blows' or a component is disconnected from one parallel wire, the components on different wires keep working. Ø Unlike a series circuit, the lamps stay bright if you add more lamps in parallel.

Series-Parallel Combo Ø Combination of series and parallel circuits

Schematics Components and Symbols LED Switch

Schematic

Draw a series circuit: Ø Using a battery, switch, resistor & 2 LED’s

Series Circuit using schematic symbols

AC / DC Ø Ø AC: Alternating Current Electrons keep switching directions, sometimes going "forwards" and then going "backwards. " l l l Ø Ø Generators Power plants Wall outlets DC: Direct Current Electrons flow steadily in a single direction, or "forward. " l l Batteries Solar cells Fuel cells Some types of generators