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《Protel DXP 2004 SP2原理图与PCB设计（第2版）》范例源文件

[
C1
RAD-0.3
Cap



]
[
CT
RAD-0.3
Cap



]
[
IC1

0V



]
[
R1

2k



]
[
RA

1k



]
[
RB

1k



]
[
RL

10k



]
[
U1

555



]
[
VCC

12V



]
(
CVOLT
C1-2
U1-5
)
(
DCHG
RA-2
RB-1
U1-7
)
(
GND
C1-1
CT-1
RL-2
U1-1
VCC-2
)
(
OUT
RL-1
U1-3
)
(
RST
R1-2
U1-4
)
(
TRIGGER
CT-2
IC1-1
RB-2
U1-2
U1-6
)
(
VCC
R1-1
RA-1
U1-8
VCC-1
)