1. CONFIGURATION & DIMENSIONS :

3. ELECTRICAL CHARACTERISTICS ( @ 25°C ) :

SUPERWORLD ELECTRONICS (S) PTE LTD

2. SCHEMATIC :

LP28-90 (F) SERIES

POWER TRANSFORMER

PG. 1

NOTE : Specifications subject to change without notice. Please check our website for latest information.

05.06.2008

indicates polarity

1

115/230V

4

2

Primaries

3

5

8

6

7

40.00

(1.575)

PCB Pattern

SIZE

2

L

WH

B

A

UNIT : mm (inch)

gram

141.75

(1.500)

38.10

(1.894)

48.10

17.00

(0.669)

(0.374)

9.50

40.50

(1.594)

50/60Hz

3

4

2

1

7

8

6

5

L

A

PC terminal

plug-in

mounting

B

B

a. Primary Voltage

AC 115/230 V 50/60 Hz .

b. NO Load Primary Current

Input AC 115V 60Hz .

Less Than 25mA .

Input AC 230V 50Hz .

Less Than 25mA .

c. Secondary Voltage (±5%)

Series AC 46.00V .

Parallel AC 23.00V .

d. Secondary Load Current

Series 90mA .

Parallel 180mA .

e. Full Load Primary Current

Input AC 115V 60Hz .

Less Than 35mA .

Input AC 230V 50Hz .

Less Than 45mA .

f. Full Load Secondary Voltage (±5%)

Series 28.00V .

Pin 3-4

Pin 1-2

g. DC Resistance

= 1080 Ohm .

Primary = 1080 Ohm .

Parallel 14.00V .

Pin 5-6

Pin 7-8

h. Insulation Resistance

i. Withstand Voltage (Hi-Pot)

Secondary = - Ohm .

= - Ohm .

DC 500V 100Meg Ohm Of More .

AC 1500V 60Hz 1 Minutes .

Less Than 60 Deg C .

UI-29 x 5.30 m/m .

j. Temperature Rise

k. Core Size