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Instrumental Analysis - PowerPoint PPT Presentation
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Instrumental Analysis. Electrical Components and Circuits. Laws of Electricity. Component Symbols. Power sources (V) and common connections (GND). Relay. Manual switch. Optocopler. Optocoupler. Optocoupler. Resistors. Electrical Components. Electronic Components Resistors.
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Instrumental Analysis
Electrical Components and Circuits
Power sources (V) and common connections (GND)
Resistors
Resistor Color Rings
A Resistor Value is determined
by its color band and is measured in ohms
First Ring is units
Second Ring is Ten
Third Ring is number of zero’s
Fourth Ring is tolerance
Resistor Color Code Values
First Ring
Black = 0
Brown = 1
Red = 2
Orange = 3
Yellow = 4
Green = 5
Blue = 6
Violet = 7
Gray = 8
White = 9
Second Ring
Black = 0
Brown = 1
Red = 2
Orange = 3
Yellow = 4
Green = 5
Blue = 6
Violet = 7
Gray = 8
White = 9
Third Ring Multiplier
Silver = X .01
Gold = X .1
Black = X 1
Brown = X 10
Red = 2 = X 100
Orange = 3 = X 1000
Yellow = 4 = X 10,000
Green = 5 = X 100,000
Blue = 6 = X 1000,000
Violet = 7 = X 10,000,000
1m
12m
Pg 7
Transformers
Variac
Inductors (L) and Transformers (T)
simple
inductors
adjustable
adjustable
tapped
The two parallel lines indicate that the inductor is wound on a core of iron, iron powder, or ferrite material.
transformers
Electronic Components
Microphone
Outputs
voltage
Batteries
In volts
Inductor or Coil
In henries
Resistor
In Ohms
+
Power Supply
Outputs Volts
Transformer
Input voltage
Speaker
Input voltage
Potentiometer
Variable
Resistor
120V
AC In
DC
volts
Out
Isolated
Capacitors
In Farads
Step
Down
+
Step
Up
2m
2m
Pg 3
Time domain measuring instruments
Oscilloscope
