Laptop Power Adaptors (65W)

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GENERAL: These small but powerful converters provide a source of stabilised low voltage suitable for running many different items of equipment. Their output is ohmically isolated from and constant current limited. Continuous operation in current limit is allowed making them suitable for battery charging providing charge time is controlled. Connection to the battery is by a plug with a flying lead, that fits most standard cigar lighter sockets.  48V units are wire ended on the input.  The output is by flying lead terminated in a variety of connectors, be sure to let us know which connector you desire when ordering.

The converters are mainly designed for use with laptop computers that have two wire input. These converters are current limited above a certain level of demand. The output isolation of the converter from system chassis ensures that earth currents do not flow.

BATTERY DRAIN: These converters draw about 1A at 12V, 0.5A at 24V I/P and 0.25A at 48V I/P for every 10 watts of load applied.

Models available:

SM4660 12V i/p, 5V at 13A o/p. SM4670 24V i/p, 5V at 13A o/p. SM5040 48V i/p, 5V at 13A o/p.
SM4661 12V i/p, 9V at 7.2A o/p. SM4671 24V i/p, 9V at 7.2A o/p. SM5041 48V i/p, 9V at 7.2A o/p.
SM4662 12V i/p, 12V at 5.4A o/p. SM4672 24V i/p, 12V at 5.4A o/p. SM5042 48V i/p, 12V at 5.4A o/p.
SM4663 12V i/p, 15V at 4.3A o/p. SM4673 24V i/p, 15V at 4.3A o/p. SM5043 48V i/p, 15V at 4.3A o/p.
SM4664 12V i/p, 18V at 3.6A o/p. SM4674 24V i/p, 18V at 3.6A o/p. SM5044 48V i/p, 18V at 3.6A o/p.
SM4665 12V i/p, 21V at 3.1A o/p. SM4675 24V i/p, 21V at 3.1A o/p. SM5045 48V i/p, 21V at 3.1A o/p.
SM4666 12V i/p, 24V at 2.7A o/p. SM4676 24V i/p, 24V at 2.7A o/p. SM5046 48V i/p, 24V at 2.7A o/p.
SM4667 12V i/p, 48V at 1.35A o/p. SM4677 24V i/p, 48V at 1.35A o/p. SM5047 48V i/p, 48V at 1.35A o/p.
SM4668 12V i/p, 13.8V at 4.7A o/p. SM4678 24V i/p, 13.8V at 4.7A o/p. SM5048 48V i/p, 13.8V at 4.7A o/p.
SM4669 12V i/p, 27.6V at 2.3A o/p. SM4679 24V i/p, 27.6V at 2.3A o/p. SM5049 48V i/p, 27.6V at 2.3A o/p.

Specification:

 

INPUT SPECIFICATION

 

12V INPUT

24V INPUT

48VINPUT

Battery:

12V Nominal car battery

24V Nominal car battery 

48V Nominal car battery 

Voltage Range:

11-15V, 10.5-16V short term

22-30V, 21-32V short term

44-56V, 43-60V short term

Current, No Load:

0.1A Typical.

0.1A Typical.

0.1A Typical.

Current per 10W Load

1A.

0.5A.

0.25A.

Input Fuse Rating:

6.3A.

6.3A.

6.3A.

Input to output isolation:

500Kohm +/- 63V

 

 

OUTPUT SPECIFICATION

Output variation for 0-90% load change (plus cable drop)

0.5% max.

Variation for 2V input change:

50mV max.

Output current limit (note 2):

125% +/- 17%.

Output low frequency ripple:

200mV max.

 

 

 

GENERAL

Size:

111mm x 60mm x 30mm.

Weight:

0.38 Kg.

Storage Temperature:

-40 to +70C.

Operating Temperature:

-20 to +35C.

SPECIFICATION NOTES:    The main variation of output voltage with load is due to the resistance of the output cable. An internal potentiometer is available to adjust the output voltage over a range of plus or minus 5% to compensate.

CAUTION: This converter is supplied on the basis of the user determining the suitability for the purpose for which it is to be used. Allow adequate ventilation to assist unit cooling. Removal of the input cigar plug will void warranty.

WARNING: Do not reverse input polarity. Do not expose to moisture. These converters are only suitable for use with vehicles having the negative of the battery connected to chassis. Not for life dependent use.