AP1694AEV11 User Guide
230VAC Triac Dimmable GU10 LED Driver
DIODES TAPPED TRANSFORMER DESIGN
AP1694A 230VAC Buck tapped 12V 400mA Transformer Spec
1) Bobbin
EEP10 4+4 pin
1
WD2: Primary
30#*1, 60Ts
6
6
WD1: P r i m a r y
36#*1, 1 2 0 Ts
2
WD3: Auxiliary 36#1, 111Ts
7
5
2) Transformer Parameters
1. Primary Inductance (Pin1‐Pin7, all other windings are open)
Lp = 1.5mH ±5%@1kHz
2. Primary Winding Turns: NP=120Ts(Pin7‐Pin6) +60Ts(Pin6toPin1)
3. Auxiliary Winding Turns (Pin2‐ Pin5): NA= 111Ts (Pin 2 to Pin 5)
3) Transformer Winding Construction Diagram
Winding
Number
1
2
3
4
Windings
WD1‐Primary
Winding
WD2‐Primary
Winding
Insulation
Winding
Specification
Start at Pin 7, wind 120 turns of single Φ34# wire and finish on Pin 6.
Start at Pin 6, wind 60 turns of single Φ30# wire and finish on Pin 1.
2 Layers of insulation tape
WD3‐Auxiliary
Winding
Insulation
Start at Pin 2, wind 111 turns of single Φ36# wire and finish on Pin 5.
2 Layers of insulation tape
AP1694AEV11 Rev2
July 2015
www.diodes.com
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