文档介绍：AP3776B+APR34309C_5V3A
Photo of PCB
Schematics
Bill Of Material
Item
Description
QTY
Item
Description
QTY
C1,2
15uF/400V, 105℃, electrolytic
2
R1R2
47MΩ, 0805
2
C3
10uF, 1206, ceramic
1
R3
,0805
1
C4
10nF, 0805, ceramic
1
R4
300Ω, 0805
1
C5
1nF/500V, 0805, ceramic
1
R5
1R//1R//3Ω, 0805
1
C21
820uF/, solid
1
R6
, 0805, 1%
1
C22
560uF/, solid
1
R7
20K//750KΩ, 0805, 1%
1
C23
100nF, 0805, ceramic
1
R8
39kΩ, 0805, 1%
1
C24
1nF, 0805, ceramic
1
R10
, 0805,
1
CY1
470nF Y-cap
1
R11
470KΩ, 1206,
BR
bridge-KBP206
1
R12
47Ω, 1206
1
D1
1N4007, SMA
1
R21R23
20Ω, 0603
2
D2
1N4007, SMA
1
R22
27KΩ, 0603,1%
1
D3
1N4148,SOD123
1
R24
22Ω, 0603
1
LF
20mH—
1
TR1
EE19(560uH)
1
L1
1mH 6*8
1
IC1
AP3776B
1
FR1
250V 2A
1
IC2
APR34309C
1
Q1
10N65(TO-220塑封)
1
Transformer Specification
Winding Sequence: Reverse the bobbin for WD4 ,for all the pins are placed on the right hand side
WD 1
Primary winding 1
Start at Pin 2. Wind 28 turns of ø wire from left to right. Finish on M. Wind tightly & spread evenly
Insulation
2 Layers of insulation tape , thick, wide.
WD 2
Auxiliary winding
Start at Pin 4. Wind 9 turns of three paralleled ø wire from left to right. Finish on Pin 5. Wind tightly & spread evenly
Insulation
2 Layers of insulation tape , thick, wide.
WD 3
Wire Shielding
Start at Pin 5. Wind 35 turns of ø wire from left to right. The terminal float. Wind tightly & spread evenly
Insulation
2 Layers of insulation tape , thick, wide.
WD 4
Secondary winding
Reverse the bobbin for WD4 .Start at A. Wind 4 turns of two paralleled ø Triple Insulated Wire from right to left .Terminate on B. Wind tightly & spread evenly
Insulation
2 Layers of insulation tape , thick, wide.
WD 5
Wire Shielding
Start at Pin 1. Wind 10 turns of ø wire from left to right. The terminal float. Spr