Light Dimmer with Capsense Brightness Control
Light Dimmer with Capsense Brightness Control
Light Dimmer with Capsense Brightness Control
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AC~<br />
Lamp<br />
Triac <strong>Control</strong><br />
AC Zero<br />
Crossing<br />
Zero Crossing<br />
Power Supply<br />
220V AC to 5V DC<br />
Vcc<br />
PSoC<br />
triggering prevention when noised AC signal is close to zero,<br />
the D 4 limits the reverse voltage applied to Q 2 base-emitter<br />
junction, R 17 is zero-crossing detector pull-up. The zerocross<br />
detection operation is shown on Figure 4<br />
Figure 4. The Timing Diagram of “Zero Crossing” Signal<br />
110-220V, AC ~<br />
t<br />
User<br />
Interface<br />
<strong>Capsense</strong><br />
Slider<br />
LED Bar<br />
Graph<br />
Zero Crossing<br />
t<br />
<strong>Dimmer</strong> Hardware<br />
Figure 5 shows the <strong>Light</strong> <strong>Dimmer</strong> schematic. The R 4…R 7<br />
resistors are used for limiting of Q 2 base current, C 9 and<br />
R 4…R 7 form the LPF for zero-crossing detector false<br />
POWER BOARD<br />
Figure 5. <strong>Light</strong> <strong>Dimmer</strong> Schematic<br />
Power Supply<br />
J2<br />
1<br />
2<br />
AC main con<br />
F1<br />
FUSE<br />
D2<br />
1N4007<br />
C3<br />
4.7uF 400V<br />
+<br />
5<br />
4<br />
D<br />
U1<br />
B<br />
F<br />
3<br />
P<br />
B<br />
S 2<br />
S 1<br />
S<br />
LNK304<br />
8 C1<br />
0.1uF<br />
S 7<br />
R1 12k 1%<br />
R2<br />
2k 1%<br />
+ C2<br />
10uF 35V<br />
L1<br />
1mH 280mA<br />
D3<br />
UF4005<br />
D1<br />
1N4007<br />
R3<br />
3.3k<br />
+ C4<br />
100uF<br />
+11.5V<br />
+5V<br />
U2 LP2950/TO92<br />
3<br />
1<br />
IN OUT<br />
D<br />
N<br />
G<br />
C5<br />
2<br />
1uF<br />
C6<br />
1uF<br />
VCC<br />
C7<br />
0.1uF<br />
J1<br />
Lamp con<br />
Q1<br />
MAC15<br />
1<br />
2 R5 107k 0.5W<br />
C8<br />
0.47uF<br />
Triac <strong>Control</strong><br />
R10<br />
10E<br />
Triac<strong>Control</strong><br />
AC Zero Crossing Detector<br />
R4 107k 0.5W<br />
R6 107k 0.5W<br />
R7 107k 0.5W<br />
C9<br />
470pF<br />
VCC<br />
R17 4.7k<br />
D4<br />
LL4148<br />
ZeroCrossing<br />
Q2<br />
BC847<br />
CAPSENSE BOARD<br />
CapSense Slider<br />
SEGMENT1<br />
SEGMENT2<br />
SEGMENT3<br />
SEGMENT4<br />
SEGMENT5<br />
SEGMENT6<br />
SEGMENT7<br />
SEGMENT8<br />
SEGMENT9<br />
LED Bargraph<br />
0 X 1<br />
X 2<br />
X<br />
D<br />
D<br />
D<br />
E<br />
E<br />
E<br />
L<br />
L<br />
L<br />
R11<br />
R12<br />
255E<br />
255E<br />
D20 LED D11 LED<br />
D5 LED D8 LED<br />
R24<br />
R15<br />
R18<br />
R19<br />
R20<br />
R21<br />
R22<br />
R23<br />
R16<br />
R13<br />
255E<br />
D15 LED<br />
D12 LED<br />
X 3<br />
D<br />
E<br />
L<br />
1k<br />
1k<br />
1k<br />
1k<br />
1k<br />
1k<br />
1k<br />
1k<br />
1k<br />
R14<br />
255E<br />
D19 LED<br />
D16 LED<br />
sl0<br />
sl1<br />
sl2<br />
sl3<br />
sl4<br />
sl5<br />
sl6<br />
sl7<br />
sl8<br />
LED Y0<br />
LED Y1<br />
PSoC's CPU Core<br />
LED Y3<br />
LED Y2<br />
LED Y1<br />
LED Y0<br />
ZeroCrossing<br />
Triac<strong>Control</strong><br />
R26<br />
C10<br />
0.1uF<br />
VCC<br />
2 1 0 9 8 7 6 5<br />
3 3 3 2 2 2 2 2<br />
V ss V dd<br />
1<br />
P 0[3] P 0[5] P 0[7] P 0[6] P 0[4] P 0[2]<br />
2<br />
P0[1]<br />
3<br />
P2[7]<br />
4<br />
P2[5]<br />
U3<br />
5<br />
P2[3]<br />
CY8C21434<br />
6<br />
P2[1]<br />
7<br />
P3[3]<br />
8<br />
P3[1]<br />
P1[7]<br />
2k<br />
P 1[5] P 1[3] P 1[1] V ss P 1[0] P 1[2] P 1[4] P 1[6]<br />
9 0 1 2 3 4 5 6<br />
1<br />
1 1 1 1 1<br />
24<br />
P0[0]<br />
23<br />
P2[6]<br />
22<br />
P2[4]<br />
21<br />
P2[2]<br />
20<br />
P2[0]<br />
19<br />
P3[2]<br />
18<br />
P3[0]<br />
XRES 17<br />
sl8<br />
sl7<br />
LED X3<br />
sl6<br />
sl5<br />
sl4<br />
LED X2<br />
LED X1<br />
sl3<br />
sl2<br />
sl1<br />
LED X0<br />
sl0<br />
D6 LED<br />
D9 LED<br />
D13 LED<br />
D17 LED<br />
D7 LED<br />
D10 LED<br />
D14 LED<br />
D18 LED<br />
LED Y2<br />
LED Y3<br />
C13<br />
0.1uF<br />
C L<br />
S<br />
D A<br />
S<br />
January 10, 2008 Document No. 001-08990 Rev. *B (AN# is same as last 5 digits of doc #.) 2
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