Reference 1 LED: Red 3 - ctools.ece.utah.edu€¦ · RTh= Ra || b Rb RTh= Ra || Rb R a R Voltage...

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R Th = R a || R b R Th = R a || R b R a R b Voltage Reference R pot = R a + R b V CC G = R b R a +R b R a R b Voltage Reference R pot = R a + R b V CC G = R b R a +R b 10 9 LED: Red LED: Red R d D i * LED = <v Th –1.5 V <R Th +R d *LED on if <v Th > 1.5 V LED: Green LED: Green R d D i * LED = <v Th –1.5 V <R Th +R d *LED on if <v Th > 1.5 V <R Th <R Th 3 4 R Th = 0 Ω R Th = 0 Ω Reference Reference COM COM Reference Reference COM COM 2 4 1 3 16.1 16.1 16.1 16.1 16.1 16.1 16.1 16.1

Transcript of Reference 1 LED: Red 3 - ctools.ece.utah.edu€¦ · RTh= Ra || b Rb RTh= Ra || Rb R a R Voltage...

Page 1: Reference 1 LED: Red 3 - ctools.ece.utah.edu€¦ · RTh= Ra || b Rb RTh= Ra || Rb R a R Voltage Reference Rpot = Ra + Rb VCC G = Rb Ra+Rb R a R b Voltage Reference Rpot = Ra + Rb

RTh= Ra || Rb

RTh= Ra || Rb

Ra

Rb

Voltage Reference

Rpot = Ra + Rb

VCCG =

RbRa+Rb

Ra

Rb

Voltage Reference

Rpot = Ra + Rb

VCCG =

RbRa+Rb

10

9

LED: RedLED: Red

Rd

D

i*LED

= <vTh –1.5 V<RTh+Rd

*LED on if <vTh > 1.5 V

LED: GreenLED: Green

Rd

D

i*LED

= <vTh –1.5 V<RTh+Rd

*LED on if <vTh > 1.5 V

<RTh

<RTh

3

4

RTh= 0 Ω

RTh= 0 Ω

ReferenceReference

C O MC O M

ReferenceReference

C O MC O M

2

4

1

3

16.1 16.1

16.1 16.1

16.1 16.1

16.1 16.1

R R

R R

R R

R R