ELECTRICITY AND ELECTRONICS (T.L.E MAJORSHIP)


• 2 voltage connected in Parallel and reconnected in series gives less light

Circuit breaker – device automatically breaks due to overload

Facilitate pulling – pull box

Electrical metallic tubing – resistant coating for protection of wires

Junction box – termination and connection

Breaker switch – for electric shock

Symbols – schematic diagram

Wiring – physical appearance

Block diagram – linear appearance

Load – convert electrical energy into other form of energy

Circuit – whole path

Source – AC or DC

Control – on/off; switch

• Measure resistance, ohmmeter

• Measure current, ammeter

• Measure voltage, AC voltmeter /  DC voltmeter

Measure voltage, resistance, current – multitester or multimeter

Electrical pliers – cutting/holding

Soldering iron – joing (circuit board)

• Fuse puller, for pulling cartridge

• Mini drill – boring holes

Desoldering pump – removing solder iron

Silicon diode – rectifier

Crystal diode – detector, signal

Light emitting diode (LED) – lighting

Zener diode – regulator

Rectifier diode – convert AC to DC

NPN base – positive; outward

PNP base – negative; inward

Fusion – joining hydrogen atoms

Tension – surface

Fission – splitting

Friction – rubbing

Weatherproof socket – outdoor / wet location

• Location plan, not included in electrical plans for residential house

Surface type – beyond wall surface

Flush type – within the wall

Generator – mechanical

Battery – chemical

Transformer – magnetism

Heat to electric energy – thermocouple

1st and 2nd band – significant digits

Multiplier – 3rd band

Tolerance – 4th band

• Anode, positive

• Cathode, negative

AM, 530 KHz – 1600 Khz

FM, 88 Mhz – 108 Mhz

Oscillator – produce high frequency

Soldering flux – acid used to clean metals

• 14 AWG light fixtures and circuit

• 12 AWG convenience outlet

• 8 AWG cable for service entrance

• SI standard of 14 AWG is 2.0 mm

Electrical metallic tubing – raising to either higher or lower level

Series connected drycell – increase amount of voltage

• Resistor – oppose, resist, limit

Diode – one direction, convert AC to DC

• Insulator – no electron moving

Capacitor – storage of charge

Sine wave – rise and fall of AC and voltage

Open resistor – infinite (no deflection)

Erratic sound – defective volume control

Worn out amplifier – audio frequency signal

Broken antenna – main signal

Blasted tuner – radio station

Tuning capacitor – tuned to different station

Resistor – non polarize

• Transistor, Diode, Capacitor (polarize, + - )

• Emitter, electrode with an arrow

• Self bias, base connected to collector

Copper – commonly used, cheapest

Silver – best conductor

Aluminum – better conductivity than copper

Busbar – for connecting high voltage

Western union – housing installation

Photoelectricity – emmission of light

Source – supplier of electricity (battery, dry cell, generator)

Load – electrical devices

Control – switch on/off

Path – circuit, wires

Electrical pressure – volts

• Solid conductor – electrons free to move

• Bigger wire less resistance

• Bend copper without kinking, expose copper to heat

NPN silicon base bias voltage – 0.6 volt

Stored – memory

Encoder – phase distortion

Voltage divider – operating point is almost stable

Difference in potential – voltage drop

DC – series

AC – parallel

Binary processor – single integrated circuit

Cannot be recharged – primary battery

• Wire stripper, to cut insulation

Solder – Tin and Lead

Forward Biased – ON Switch

Reversed Biased – OFF Switch

Yellow-Violet-Black-Gold, 47 ohms, 5%

• Two plates capacitor, Dielectric

• Ferric chloride, chemical used in etching copper

Voltage in capacitor – working voltage

• Aluminum, metal used as heat sink


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