MC7812E(2012) Просмотр технического описания (PDF) - Fairchild Semiconductor

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Компоненты Описание

производитель

MC7812E
(Rev.:2012)

3-Terminal 1A Positive Voltage Regulator

Fairchild Semiconductor 

MC78XXE

Input

Q1 BD536

IQ1

R1

3

R1 =

VBEQ1

IREG - IQ1/BQ1

1

IREG

0.33uF

MC78XXE

2

3

Output

IO

0.1uF

IO = IREG+BQ1(IREG - VBEO1/R1)

Input

Figure 12. High Current Voltage Regulator

RSC

Q1

Q2

R1

3

Q1 = TIP42

Q2 = TIP42

VBEQ2

RSC= ISC

0.33uF

MC78XXE

2

3

0.1uF

Figure 13. High Output Current with Short Circuit Protection

Output

1

VI

0.33uF

COMMON

MC78XXE

2

3

VO

0.1uF

4.7K

7

_2

6

LM741

4

+

3

4.7K

COMMON

-VIN

TIP42

-VO

Figure 14. Tracking Voltage Regulator

7

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