Instrumental Analysis
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Transcript of Instrumental Analysis
Instrumental Analysis
Electrical Components and Circuits
Laws of Electricity
RVRIP
IVP
IRV
/
LawPower
zero is loop closed ain voltagesof Sum
zero iscircuit ain point any at currents of Sum
LawsKirchhoff'
Law sOhm'
22
Component SymbolsPower sources (V) and common connections (GND)
Manual switch Relay
Optocopler
Optocoupler
Electrical ComponentsResistors
Electronic ComponentsResistors
A Resistor Value is determined by its color band and is measured in ohms
First Ring is unitsSecond Ring is TenThird Ring is number of zero’sFourth Ring is tolerance
First RingBlack = 0Brown = 1Red = 2Orange = 3Yellow = 4Green = 5Blue = 6Violet = 7Gray = 8White = 9
Third Ring MultiplierSilver = X .01Gold = X .1Black = X 1Brown = X 10Red = 2 = X 100Orange = 3 = X 1000Yellow = 4 = X 10,000Green = 5 = X 100,000Blue = 6 = X 1000,000Violet = 7 = X 10,000,000
Resistor Color Rings
Resistor Color Code Values
Second RingBlack = 0Brown = 1Red = 2Orange = 3Yellow = 4Green = 5Blue = 6Violet = 7Gray = 8White = 9
1m12m Pg 7
Direct CurrentSeries Circuit I
Ohm’s Law
Kirchhoff’s Laws
Variable Voltage Divider
Potentiometers / Variable Resistors
Variable resistors
Photoresistors
Thermistor
CapacitorsElectrolyte Nonelectrolyte
Transformers
Variac
Component SymbolsInductors (L) and Transformers (T)
simpleinductors
transformersThe two parallel lines indicate that the inductor is wound on a core of iron, iron powder, or ferrite material.
adjustableadjustable tapped
H.V transformer
Car Ignition
TV-LineTesla Coil
Symbols
PotentiometerVariableResistor
Power SupplyOutputs Volts
BatteriesIn volts
CapacitorsIn Farads
ResistorIn Ohms
Inductor or CoilIn henries
Electronic Components
TransformerInput voltage
120VAC In
DC voltsOut
+
SpeakerInput voltage
MicrophoneOutputs voltage+
StepDown
StepUp
Isolated
2m2m
Pg 3
Measuring Devices
Multimeters: Analogue
Digital multimeters
Insulation tester Megger
Time domain measuring instruments
Oscilloscope
Signal / Coaxial Cables & BNC connectors
RS232 / 9-pin
RS232 / 25-pin
GPIB /IEEECable