DER-111
3.15 W General Purpose Adapter
October 26, 2005
8 Transformer Specification
8.1 Electrical Diagram
5
WD#1
Cancellation
51T #36
WD#5
Secondary
8
WD#2
14T # 28 TIW
Primary
178T #35 x 4
4
10
1
WD#3
Bias
22T #35 x2
2
WD#4
Shield
9T #31 x 3
3
Figure 4 – Transformer Electrical Diagram
8.2 Electrical Specifications
Electrical Strength
1 second, 60 Hz, from Pins 1 - 5 to Pins 6 -10
Pins 4-5, all other windings open, measured at 42
kHz, 0.4 VRMS
3000 VAC
4.44 mH, -
10/+10%
Primary Inductance
Resonant Frequency
Primary Leakage Inductance
Pins 4-5, all other windings open
Pins 4-5, with Pins 8-10 shorted, measured at
42 kHz, 0.4 VRMS
300 kHz (Min.)
200 µH (Max.)
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 9 of 23
POWERINT [ Power Integrations ]
