7636-041709-5

C1 = 100uF

R6 = 150kΩ

D4 = 1N4004

C2 = 0.0047uF

R6 = 270kΩ

D5 = 1N4004

C3 = 0.047uF

R7 = 47kΩ

Q1 = MJE340 (or equivalent)

C4 = 0.1uF

R7 = 91kΩ

Q2 = Liteon LTV354T (or equivalent)

R1 = 150kΩ

R8 = 47kΩ

Q3 = IRF630 (Typical)

R1 = 270kΩ, 1/2W

R8 = 91kΩ

Q3 = IRF730 (Typical)

R2 = 390Ω

R9 = 0.25Ω, 1W (

For 1 Amp RMS Max)

Q4 = IRF630 (Typical)

R3 = 39kΩ

R10 = 4.3kΩ, 1/2W

Q4 = IRF730 (Typical)

R4 = 1.5MΩ

D1 = 12V, 1/2W, 5%

R5 = 10kΩ

D2 = 5.6V, 1/4W, 10%

All Resistors 1/4W, All Capacitors 25V unless otherwise specified

D3 = 1N4004

* = Component change for 220VAC

*

*

*

FIGURE 4. Reverse Phase Dimmer (Option 1)

*

*

*

MODE

TEST

SYNC

GATE

OVC

SENS/

SENSE

SWITCH

3

4

2

1

Q2

R3

+

C1

D1

C4

R5

LOAD

TRANSFORMER

N

P

EXT

SWITCH

D2

R2

Q1

R1

D4

D3

D5

Q4 3

2

1

1

2

3

R9

R6

C3

R4

R7

Q3

R8

U3

LS7636

1

2

3

4

5

6

7

8

C2

R10