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TSA Basic Knowledge for Electrical Applications Copy
Terms in this set (91)
What is 'I'
What is 'E'
What is 'R'
What is 'W'
George Simon Ohm
Who discovered Resistance
R x I
Equation for Voltage
V / I
Equation for Resistance
V / R
Equation for Current
W / I
Equation for Voltage with watts
V x I
Equation for Watts
W / V
Equation for Current with Watts
Conductor under certain cercumstances
Conducts Electricity easily
Resists or controls the current of Electricity
555 Chip is a What?
Ground ( negative -)
1 on a 555 chip does what?
Trigger, it starts the timer or circuit
2 on a 555 chip does what?
Outputs, pulses out of the chip
3 on a 555 chip does what?
resets, stops all operation to reset then has to wait till pin 2 triggers again to start the timer.
4 on a 555 chip does what?
Controls volatage, it sends elctricity to a 10-.5uf capacitor to control the volage flow.
5 on a 555 chip does what?
Threshold, When voltage on the timing capacitor rises above .66vvc it resets the output pin.
6 on a 555 chip does what?
Discharge, provides a path from the timing capacitor when discharge is low.
7 on a 555 chip does what?
Provides positive charge (+) or Vcc
8 on a 555 chip does what?
There is no Chip 9 on a normal 555 chip.
What does pin 9 on a 555 chip do?
positive supply voltage
What is Vcc
A capacitor to control the time electricity leaves the 555 Chip.
What is the Timer Capacitor on a 555 chip
What is black on a resistor Chart, what is its multiplier.
What is brown on a resistor Chart, what is its multiplier.
What is red on a resistor Chart, what is its multiplier.
What is orange on a resistor Chart, what is its multiplier.
What is Yellow on a resistor Chart, what is its multiplier.
What is green on a resistor Chart, what is its multiplier.
What is blue on a resistor Chart, what is its multiplier.
What is violet on a resistor Chart, what is its multiplier.
8, no multiplier
What is grey on a resistor Chart, what is its multiplier.
9, no mutiplier
What is white on a resistor Chart, what is its multiplier.
no number, .1
What is gold on a resistor Chart, what is its multiplier.
no number, .01
What is silver on a resistor Chart, what is its multiplier.
Red, brown, green blue, violet, grey, gold, silver
what colors have a tolerance
What is the tolerance of Brown
What is the tolerance of Red
What is the tolerance of green
What is the tolerance of Blue
What is the tolerance of Violet
What is the tolerance of Grey
What is the tolerance of Gold
What is the tolerance of Silver
The Omega Symbol
What is the ohm symbol
What does SCR stand for
is a solid state switching device which can provide fast, infinitely variable proportional control of electric power. A semiconductor device that functions as an electrically controlled switch.
What does a SCR do
A diode is a discrete component that allows current to flow in one direction only. + to -
What does a diode do
Light Emmiting Diode
What does LED stand for
- and +
Cathode is __ and Anode is __
What is 'P' in a PNP os NPN transistor
What is 'N' is a PNP os NPN transistor
Emmiter Base Collector
What is the symbol for a PNP transistor
Collector Base Emitter
What is the Symbol for a NPN transtors
Current flows from Emitter to Collector but the base controls the flow.
How does a PNP transistor work
It works as an amplifier or switch
What does a transistor do
Current flows from Collector to Emitter but the base controls the flow.
How does a NPN transistor work
A PNP and a NPN connected the first 'P is PNP is the positive and the last N in NPN is negative, the last P is PNP is the middle P in NPN is connected to form the base. Or just a diode with a gate.
What is an SCR layout
A Chart for the Voltage, Current, Resistance, and Power
What does a EIRP Chart do
Watts (SI unit)
What is Power
International System of Units
What is SI
Who discovered conductace
Who dicovered Current
Who discovered the solenoid
A coil of wire with a current that acts as a bar magnet or an electromagnet
What is a Solenoid
the magnetic field of an activated solenoid has positive and negative poles that will attract or repel material sensitive to magnets. In a solenoid, the electromagnetic field causes the piston to either move backward or forward, which is how motion is created by a solenoid coil.
What does a solenoid do
Who discovered Voltage
Who discovered Amperes
The power consumption at a rate of one watt per hour
What are watt hours
The measure of 1000 watts. In a kilowatt hour there are roughly 1000 watts per hour.
What are Kilowatts
An electical current which periodically switches directions. Wall sockets use alternating current and run at 60 hertz in the U.S.
What is alternating current (AC)
An electrical current that flows one way. For example, battery cells in flashlights use Direct Current
What is direct current (DC)
Find E when the resistance is 5 ohms and the current is 3 amps
0.09 amps, or 90 miliamps
Find I when the voltage is 9 volts and when the resistance is 100 ohms
Find R when the voltage is 5.5 volts and the current is 100 miliamps. ( Remember, 1 miliamp equals 0.001 amps and 1 amp equals 1,000 miliamps
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