直流保护/时滞扬声器电路图

材料BOM表：R1-2=See text*
R3=470R 1W*see text
R4-5= 1M
R6-7= 1K
R8-14= 15K
R9-15= 56K
R10-16= 56K
R11-17= 10K
R12-13= 39K
R18= 39K
R19= 1K2
R20= 1K
R21-22= 3K9
R23= 22K
R24= 39K
RX= 47R 10W
C1= 220uF 63V
C2-5= 47uF 63V
C3-4=100nF
C6= 1uF 25V
C7= 4.7uF 25V
C8= 470uF 16V
C9-14= 22uF 16V
C10-13= 33uF 63V
CX= 33nF 630V
IC1= 4093 cmos
IC2= 7812T
Q1-4= BD679
Q5-6= BC550C
D1-4= 1N4007
D5-8= 1N4148
D9=12V 1.2W Zener
D10-22= 1N4148
LD1-2= LED
LD3=Flash Led [RED]
BZ= BUZZER 12V
J1-4= Connectors
TR1= 10K Trimmer
RL1-3= 12V 2X2(10A)RELAY