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TEST YOUR BRAIN!. Basic Circuits. Creates a set voltage. Potential Dividers. R1 = 40. R1 = 100. R1 = 20. R1. Vs = 10V. Vs = 10V. Vs = 10V. Vs. Vout = Vs x R2 R1 + R2. Vout = 3.3V. Vout = 5V. Vout = 6.6V. R2 = 20. R2 = 40. R2 = 100. - PowerPoint PPT Presentation
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TESTYOUR
BRAIN!
Basic
Circ
uits
PotentialDividers
Creates a setvoltage
Potential Divider
R1
R2
Vs Vout = Vs x R2 R1 + R2
Vout = 10 x 100 = 1000 = 5V 100 +100 200
R1 = 100
Vs = 10V
R2 = 100
Vout = 5V
Vout = 10 x 40 = 400 = 6.6V 20 + 40 60
R1 = 20
Vs = 10V
R2 = 40
Vout = 6.6V
Vout = 10 x 20 = 200 = 3.3V 40+20 60
R1 = 40
Vs = 10V
R2 = 20
Vout = 3.3V
Potentiometer
Creates an adjustablevoltage
Potentiometer
VR1
10V10V
Volts
Potentiometer
VR1
10V
7.5V
Volts
Potentiometer
VR1
10V
5V
Volts
Potentiometer
VR1
10V
2.5V
Volts
Potentiometer
VR1
10V
0V
Volts
LDRPotential Divider
Converts a lightlevel intoa voltage
LDR Potential Divider
10V
Vout
VoltsLDRResistance
LDR Potential Divider
10V
Vout
VoltsLDRResistance
LDR Potential Divider
10V
Vout
VoltsLDRResistance
LDR Potential Divider
10V
Vout
VoltsLDRResistance
LDR Potential Divider
10V
Vout
VoltsLDRResistance
Comparator
Compares twodifferent input
voltages
Comparator
Inverting > Non-inverting
Comparator
Inverting = Non-inverting
Comparator
Inverting < Non-inverting
Light Sensor
LED lights onwhen it is dark
Light Sensor
LDRResistance
Inverting inputvoltage
Output voltage
-+
10V
Vout
Non-Inverting inputvoltage
Light Sensor
LDRResistance
Inverting inputvoltage
Output voltage
-+
10V
Vout
Non-Inverting inputvoltage
Light Sensor
LDRResistance
Inverting inputvoltage
Output voltage
-+
10V
Vout
Non-Inverting inputvoltage
Light Sensor
LDRResistance
Innverting inputvoltage
Output voltage
-+
10V
Vout
Non-Inverting inputvoltage
555 Timer
Astable Circuit
Producescontinuous pulses
555 Astable Circuit
F = . 1.44 . (R1+2R2) x C1
555 Astable Circuit
SMALLCAPACITOR
HIGHFREQUENCY
555 Astable Circuit
LARGECAPACITOR
LOWFREQUENCY
555 Timer
Monostable Circuit
Produces apulse of a set
length
555 Monostable Circuit
T = 1.1 x C1 x R1
555 Monostable Circuit
Trigger
Output
555 Monostable Circuit
Field Effect Transistor
(FET)
Allows a voltage tocontrol a large
Current.
Transistor Driver
B
C
E
A small current onthe base createsa large current
through thespeaker
Transistor Driver
B
C
E
A small current onthe base creates a
large currentthrough the
lamp
Field Effect Transistor
(FET)
FET Driver
V
A voltage on thegate controls thecurrent through
the lamp.
G
D
S
Logic Gates
AND
AND Gate
A B Q
0 0 0
Truth Table
A BQ
A=0
B=0Q=0
AND Gate
A B Q
0 0 0
0 1 0
Truth Table
A BQ
A=0
B=1Q=0
AND Gate
A B Q
0 0 0
0 1 0
1 0 0
Truth Table
A BQ
A=1
B=0Q=0
AND Gate
A B Q
0 0 0
0 1 0
1 0 0
1 1 1
Truth Table
A BQ
A=1
B=1Q=1
OR
OR Gate
A B Q
0 0 0
Truth Table
A
B Q
A=0
B=0Q=0
OR Gate
A B Q
0 0 0
0 1 1
Truth Table
A
B Q
A=0
B=1Q=1
OR Gate
A B Q
0 0 0
0 1 1
1 0 1
Truth Table
A
B Q
A=1
B=0Q=1
OR Gate
A B Q
0 0 0
0 1 1
1 0 1
1 1 1
Truth Table
A
B Q
A=1
B=1Q=1
NOT
NAND
NOR
Symbol
ResistorA resistor limits
the amountof current
flowing in a circuit
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