ClipArt ETC
A diagram showing 3-volt scale connected across a circuit.

3-Volt Scale

A diagram showing 3-volt scale connected across a circuit.

"Circuits of a multiple series lamp." —Croft 1917

Multiple Series Arc Lamp

"Circuits of a multiple series lamp." —Croft 1917

"Circuits of a series arc lamp." —Croft 1917

Circuits of Arc Lamp

"Circuits of a series arc lamp." —Croft 1917

This receptacle consists of the metal box designed for connections to a wiring system.

Outlet Box

This receptacle consists of the metal box designed for connections to a wiring system.

A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

Circuit Breaker

A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit…

"A medium-capacity, double-pole circuit breaker (250 volts, 200 amp. General Electric Company, type C, form G)." —Croft 1920

Circuit Breaker

"A medium-capacity, double-pole circuit breaker (250 volts, 200 amp. General Electric Company, type…

"A heavy-current (2000 amp.) 650-volt, single-pole overload circuit breaker (General Electric Company, type C, form K2)." —Croft 1920

Circuit Breaker

"A heavy-current (2000 amp.) 650-volt, single-pole overload circuit breaker (General Electric Company,…

"Diagrammatic drawing of a time-limit circuit breaker." —Croft 1920

Time-limit Circuit Breaker

"Diagrammatic drawing of a time-limit circuit breaker." —Croft 1920

"Series lighting circuits." —Croft 1920

Series Circuit

"Series lighting circuits." —Croft 1920

Wiring diagram of starting motor circuit for all Delco 6-24-volt systems.

Delco

Wiring diagram of starting motor circuit for all Delco 6-24-volt systems.

"The dynamo has its field mangets F F magnetized by means of a small current flowing around a shunt circuit." — Hawkins, 1917

Dynamo

"The dynamo has its field mangets F F magnetized by means of a small current flowing around a shunt…

Starting-motor circuit for Dyneto system.

Dyneto

Starting-motor circuit for Dyneto system.

Generator circuit for Dyneto system.

Dyneto

Generator circuit for Dyneto system.

A galvanoscope in a circuit.

Galvanoscope in circuit

A galvanoscope in a circuit.

"Method of drying out a generator by short-circuiting the armature leads through a water rheostat." —Croft 1920

Method For Drying Out a Generator

"Method of drying out a generator by short-circuiting the armature leads through a water rheostat."…

"Cut-out ground detector using lamps for a three wire circuit." —Croft 1920

Cutout Ground Detector for Three Wire Circuit

"Cut-out ground detector using lamps for a three wire circuit." —Croft 1920

"Lamp ground detector for a three-wire circuit." —Croft 1920

Ground Detector for Three-Wire Circuit

"Lamp ground detector for a three-wire circuit." —Croft 1920

"Lamp ground detector for a two-wire circuit." —Croft 1920

Ground Detector for Two-Wire Circuit

"Lamp ground detector for a two-wire circuit." —Croft 1920

A ground wire over a three-phase transmission circuit.

Ground Wire

A ground wire over a three-phase transmission circuit.

Grounded street railway circuit.

railway circuit

Grounded street railway circuit.

"If in a complete metallic circuit having junctions of disimilar metals, the juntions are at different temperatures, then generally a steady current will flow in the circuit as long as the differences of the temperatures of the junction is maintained." -Hawkins, 1917

Seebeck Effect

"If in a complete metallic circuit having junctions of disimilar metals, the juntions are at different…

A series circuit service switch.

service switch

A series circuit service switch.

A diagram of ground or short circuit.

Short Circuit

A diagram of ground or short circuit.

Diagram for locating short-circuits between motor and generator armature coils.

Short-Circuits

Diagram for locating short-circuits between motor and generator armature coils.

"A shunt, in electricity, is a conductor placed between two points in closed circuit, to divert or shunt part of the current."—Finley, 1917

Shunt

"A shunt, in electricity, is a conductor placed between two points in closed circuit, to divert or shunt…

"A series-circuit service switch or cut-out." —Croft 1920

Series Circuit Switch

"A series-circuit service switch or cut-out." —Croft 1920

A three phase circuit and voltmeter ground detector.

three phase circuit

A three phase circuit and voltmeter ground detector.

Symmetrical arrangement of conductors; an example of a three-phase circuit.

Three-phase Conductors

Symmetrical arrangement of conductors; an example of a three-phase circuit.

"The transmitter is a microphone adapted for the transmission of telephone messages and, in general practice, is so used, better results being thus secured than is possible when the transmitter and receiver are identical. In the Blake transmitter, a diagram is supported back of a mouthpiece, as in the Bell telephone."

Blake transmitter

"The transmitter is a microphone adapted for the transmission of telephone messages and, in general…

A volt-meter in a circuit.

Volt meter

A volt-meter in a circuit.

"The Wheatstone bridge is used as a way to measure resistance of a unknown resitors." -Avery 1895

Wheatstone Bridge

"The Wheatstone bridge is used as a way to measure resistance of a unknown resitors." -Avery 1895

"The Wheatstone bridge is used as a way to measure resistance of a unknown resitors." -Avery 1895

Wheatstone Bridge in Circuit

"The Wheatstone bridge is used as a way to measure resistance of a unknown resitors." -Avery 1895

"The Wheatstone bridge is used as a way to measure resistance of a unknown resitors." -Avery 1895

Wheatstone Bridge with Resistors

"The Wheatstone bridge is used as a way to measure resistance of a unknown resitors." -Avery 1895