ESD circuit observations
1. Single LED with various colors, Diameter 5 mm, Vin = 5V
LED Calculated Bread Simulation Remark
Color values Borad values
Testing
values
VLED (V)
ILED (mA)
Series Resistor Rs
(Ohm)
VLED (V)
ILED (mA)
Series Resistor Rs
(Ohm)
VLED (V)
ILED (mA)
Series Resistor Rs
(Ohm)
2. Transistor driver circuit
VCC = 9V; hfe or β = 100; LED color= Red
Single LED Driver Calculated Bread Borad Simulation values
values Testing values
VLED (V)
ILED/IC (mA)
IB (mA)
RC (Ohm)
VCE_on (V)
VCE_cutoff (V)
VBE_on (V)
VBE_cutoff (V)
Device status
Input Transistor (On/0ff) LED(On/0ff)
High
Low
Series LED’s
Series LED’s
VLED (V)
ILED/IC (mA)
IB (mA)
RC (Ohm)
VCE_on (V)
VCE_cutoff (V)
VBE_on (V)
VBE_cutoff (V)
Device status
Input Transistor (On/0ff) LED(On/0ff)
High
Low
Parallel LED’s
Parallel LED’s
VLED (V)
ILED/IC (mA)
IB (mA)
RC (Ohm)
VCE_on (V)
VCE_cutoff (V)
VBE_on (V)
Device status
Input Transistor (On/0ff) LED(On/0ff)
High
Low
Transistor relay driver
Relay Circuit
RRELAY (Ohm)
IRelay/IC (mA)
IB (mA)
VCE_on (V)
VCE_cutoff (V)
VBE_on (V)
VBE_cutoff (V)
Device status
Input Transistor (On/0ff) LED(On/0ff) Relay (NO/NC)
High
Low
Ultrasound sensor
Plot a graph showing linear distance 0 to onwards in cm. Draw lines on ±7º. Mark ●
for right distance and mark for wrong or beyond range. You may use three different
color pencils to shade region in each experiment differently.
1--
2--
3--
+7º
4--
5—
0 | | | | |
-1-- 1 2 3 4 5
-2-- -7º
-3--
-4--
-5—
Experiment-1: linear and angular distance measurement
Distance on graph Linear distance Angular distance Angular distance
(cm) (cm) (cm) 7º (cm)-7º
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Experiment-2: linear and angular distance measurement for object size lesser than
sensor
Distance on graph Linear distance Angular distance Angular distance
(cm) (cm) (cm) 7º (cm)-7º
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Experiment-3 linear and angular distance measurement for object material different
than experiment 1 and 2.
Distance on graph Linear distance Angular distance Angular distance
(cm) (cm) (cm) 7º (cm)-7º
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15