General Electronic Component Notes (ppt)

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Nov 2, 2013 (3 years and 9 months ago)

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Component Notes

LED

IC Socket

Diode

Resistors

Transistor Symbols

PNP

P
-
channel

NPN

N
-
channel

BJT

JFET

BJT and JFET symbols

P
-
channel

N
-
channel

JFET


MOSFET
enh


MOSFET
dep


JFET and IGFET symbols


Example Transistor Driver Circuits

Lo Si de Dri ve (NPN) Load La1 i s
connected to the +V suppl y (Hi ) and
then swi tched to ground (Lo) to turn
on. (Posi ti ve Logi c


Hi gh on the i nput
turns the l oad on.) See far upper ri ght
exampl e.

Hi
Si de Dri ve
(PNP) Load La2
i s
connected to
ground (Lo)
and then
swi tched to
+V (Hi )
to turn on.
(Negati ve
Logi c


Lo
on the i nput
turns the l oad on.)

Lo si de dri ver rel ay dri ver

Darl i ngton pai r transistors are used i n appl i cations where

Very heavy current l oads need to be control l ed. The
darl i ngton

Confi gurati on offers much hi gher current gai n because the

hfe

of the devi ce i s the product of the
hfe

of the two


transi stors TR1 and TR2 .


Opto
-
Isol ators offer i sol ati on whi ch i s not easi l y obtai nable wi th


any other devi ce. When control l i ng very hi gh vol tages thi s provi des

Isol ation protecti on for sensi ti ve devi ces such as mi cro
-
controllers.

AWG

Dia

Inch

Cir Mil

Dia

cm

Area Inch
2

lb/kft

ohms

/kft

Ohms

/km

CU Max

free
-
air

Amps

CU Max

enclosed

Amps

32

0.008

63.2

0.020

4.964E
-
05

0.19

164.1

538.4

.53

0.32

30

0.010

100.5

0.025

7.894E
-
05

0.30

103.2

338.6

.86

0.52

28

0.013

159.8

0.032

1.255E
-
04

0.48

64.9

212.9

1.4

0.83

26

0.016

254.1

0.040

1.996E
-
04

0.77

40.81

133.9

2.2

1.3

24

0.020

404.0

0.051

3.173E
-
04

1.22

25.67

84.22

3.5

2.1

22

0.025

642.4

0.064

5.046E
-
04

1.94

16.14

52.95

7.0

5.0

20

0.032

1,021.5

0.081

8.023E
-
04

3.09

10.15

33.30

11.0

7.5

18

0.040

1,624.3

0.102

1.276E
-
03

4.92

6.385

20.95

16

10

16

0.051

2,582.7

0.129

2.028E
-
03

7.82

4.016

13.18

22

13

14

0.064

4,106.7

0.163

3.225E
-
03

12.43

2.525

8.284

32

17

12

0.081

6,529.9

0.205

5.129E
-
03

19.77

1.588

5.210

41

23

10

0.102

10,383.0

0.259

8.155E
-
03

31.43

1.215

3.985

55

33

8

0.128

16,509.7

0.326

1.297E
-
02

49.98

0.998

3.274

73

46

6

0.162

26,251.4

0.412

2.062E
-
02

79.46

0.395

1.296

101

60

4

0.204

41,741.3

0.519

3.278E
-
02

126.35

0.248

0.8136

135

80

2

0.258

66,371.3

0.654

5.213E
-
02

200.91

0.156

0.5118

181

100

1

0.289

83,692.7

0.735

6.573E
-
02

253.34

0.123

0.4035

211

125

0

0.325

105,534.
5

0.825

8.289E
-
02

319.46

0.0983

0.3225

245

150

00

0.365

133,076.
5

0.927

1.045E
-
01

402.83

0.0779

0.2556

283

175

000

0.410

167,806.
4

1.040

1.318E
-
01

507.96

0.0618

0.2028

328

200

0000

0.460

211,600.
0

1.168

1.662E
-
01

640.53

0.04901

0.1608

380

225



Wire
Ampacity

Table

AC

Plug

and Wiring Color

code



Worl d Regi on, country

or other enti ty(
i es
)

Li ne or Li ve (Hot)

Neutral

Protecti ve earth/ground

United States and Canada

black (
brass
)

white (
silver
)

green (
green
) or bare copper
wire


EU,Australia & South Africa
(IEC 60446)

brown

blue

green & yellow

Australia & New Zealand
(AS/NZS 3000:2000 3.8.1)

red

black

green/yellow

Note: 1. The (Brass) and (Si l ver) references above denote the screw col ors used on most el ectri cal fi xtures. (Swi tches, Outl e
ts,

etc
)


2. For Mul ti

Phase Appl i cati ons col or codes defer between systems. Refer to manufacturer or country standards for the appropri ate


col ors.

DC Wiring Color Code

Wire insulation

Color

Common Power Supply or
Function

Description

Black

0V

Ground or Common

Yellow

+5V

Logic Supply

Red

+12V or +15V

Analog Supply

Blue

-
12V or
-
15V

Analog Supply

Orange

+24V

Control Supply

Note: 1. The above col ors are

those establ i shed by the ME E
-
Shop and are used here for reference. You can establ i sh your own wi ri ng
col or standard al though i t i s suggested that you mai ntai n BLACK as your Ground or Common col or.