Communication Signals Fox Valley Technical College Appleton, WI Communication Signals Basic Circuits

of A Simple Electric Circuit Pictorial Diagram of A Simple Electric Circuit Battery Lamps Wire Conductor Current Flow + - Voltage Source

A Schematic Diagram for the Simple Circuit VS Lamps Battery Or DC Voltage Supply PL1 PL2

Hardware Pictorial and Schematic of a Closed Circuit Using a SPST switch for control Closed Circuit Path => Current Flows V I + - Closed Switch Off On

Hardware Pictorial and Schematic of an Open Circuit Using a SPST switch for control Broken Circuit Path => NO Current Flow V + - Open Switch Off On

Example: Pictorial of a SPDT switch controlling two lamps 2 1 Switch + -

Example: Schematic of a SPDT switch controlling two lamps 1 2 V + -

Switch Symbols NCPB NOPB SPST-NC SPDT Break-Make SPST-NO PB DPST DPDT Single-pole rotary (6-position)

Typical Mechanical Switches

Construction View of a Typical Toggle Switch

Symbols for Ground Chassis Ground AC DC

A Simple Circuit Schematic Using Ground Symbols I + - 12 V 0 V Ground Symbol

Schematic Symbols Introduced So Far Battery Resistor Potentio- meter Rheostat Grounds Fuse Circuit Breaker Lamps SPST-NO SPST-NC NOPB NCPB SPDT Break-Make PB T A V Ω Rotary Switch DPST Ammeter Voltmeter Ohmmeter Thermistor Photo Resistor DPDT

Watch the video clip and see if you can tell what kind of circuit this is! http://www.teachertube.com/view_video.php?viewkey=9c7de745bd6b6d1a7a86

Series Circuit VS IS +V1− +V2− + V3 − +V5− +V6− V4 One path for current. So all components have the same current through them. But components have different voltages consistent with the voltage – current relationship for each type of component.

Watch the video clip and again, see if you can tell what kind of circuit this one is. http://www.teachertube.com/view_video.php?viewkey=318031eedd5700a8d3d2

Parallel Circuit + VS − I1 I2 I3 I4 I5 One voltage source. So all components have the same voltage across them. But the components have different currents consistent with the voltage – current relationship for each type of component.

Series-Parallel Circuit VS Most circuits are a combination of series and parallel circuits.