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Published byEmmeline Dods Modified about 1 year ago

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TEST YOUR BRAIN! Basic Circuits

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Potential Dividers Creates a set voltage

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Potential Divider R1 R2 VsVout = Vs x R2 R1 + R2 Vout = 10 x 100 = 1000 = 5V R1 = 100 Vs = 10V R2 = 100 Vout = 5V Vout = 10 x 40 = 400 = 6.6V R1 = 20 Vs = 10V R2 = 40 Vout = 6.6V Vout = 10 x 20 = 200 = 3.3V R1 = 40 Vs = 10V R2 = 20 Vout = 3.3V

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Potentiometer Creates an adjustable voltage

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Potentiometer VR1 10V Volts

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Potentiometer VR1 10V 7.5V Volts

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Potentiometer VR1 10V 5V Volts

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Potentiometer VR1 10V 2.5V Volts

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Potentiometer VR1 10V 0V Volts

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LDR Potential Divider Converts a light level into a voltage

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LDR Potential Divider 10V Vout Volts LDR Resistance

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LDR Potential Divider 10V Vout Volts LDR Resistance

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LDR Potential Divider 10V Vout Volts LDR Resistance

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LDR Potential Divider 10V Vout Volts LDR Resistance

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LDR Potential Divider 10V Vout Volts LDR Resistance

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Comparator Compares two different input voltages

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Comparator Inverting > Non-inverting

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Comparator Inverting = Non-inverting

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Comparator Inverting < Non-inverting

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Light Sensor LED lights on when it is dark

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Light Sensor LDR Resistance Inverting input voltage Output voltage V Vout Non-Inverting input voltage

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Light Sensor LDR Resistance Inverting input voltage Output voltage V Vout Non-Inverting input voltage

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Light Sensor LDR Resistance Inverting input voltage Output voltage V Vout Non-Inverting input voltage

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Light Sensor LDR Resistance Innverting input voltage Output voltage V Vout Non-Inverting input voltage

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555 Timer Astable Circuit Produces continuous pulses

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555 Astable Circuit F = (R 1 +2R 2 ) x C1

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555 Astable Circuit SMALL CAPACITOR HIGH FREQUENCY

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555 Astable Circuit LARGE CAPACITOR LOW FREQUENCY

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555 Timer Monostable Circuit Produces a pulse of a set length

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555 Monostable Circuit T = 1.1 x C 1 x R 1

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555 Monostable Circuit Trigger Output

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555 Monostable Circuit

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Field Effect Transistor (FET) Allows a voltage to control a large Current.

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Transistor Driver B C E A small current on the base creates a large current through the speaker

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Transistor Driver B C E A small current on the base creates a large current through the lamp

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Field Effect Transistor (FET)

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FET Driver V A voltage on the gate controls the current through the lamp. G D S

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Logic Gates

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AND

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AND Gate ABQ 000 Truth Table A B Q A=0 B=0 Q=0

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AND Gate ABQ Truth Table A B Q A=0 B=1 Q=0

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AND Gate ABQ Truth Table A B Q A=1 B=0 Q=0

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AND Gate ABQ Truth Table A B Q A=1 B=1 Q=1

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OR

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OR Gate ABQ 000 Truth Table A B Q A=0 B=0 Q=0

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OR Gate ABQ Truth Table A B Q A=0 B=1 Q=1

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OR Gate ABQ Truth Table A B Q A=1 B=0 Q=1

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OR Gate ABQ Truth Table A B Q A=1 B=1 Q=1

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NOT

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NAND

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NOR

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Symbol Resistor A resistor limits the amount of current flowing in a circuit

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