Laptop Power Adaptors (100W)

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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, and output is by flying lead terminated in a variety of connectors, be sure to let us know which connect 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 or 0.5A at 24V I/P for every 10 watts of load applied.

Models available:

SM4960 12V i/p, 5V, 15A o/p.  SM4970 24V i/p, 5V, 15A o/p. SM4980 48V i/p, 5V, 15A o/p.
SM4961 12V i/p, 9V, 9.4A o/p. SM4971 24V i/p, 9V, 9.4A o/p. SM4981 48V i/p, 9V, 9.4A o/p.
SM4962 12V i/p, 12V, 8.5A o/p. SM4972 24V i/p, 12V, 8.5A o/p. SM4982 48V i/p, 12V, 8.5A o/p.
SM4963 12V i/p, 15V, 6.7A o/p. SM4973 24V i/p, 15V, 6.7A o/p. SM4983 48V i/p, 15V, 6.7A o/p.
SM4964 12V i/p, 18V, 5.6A o/p. SM4974 24V i/p, 18V, 5.6A o/p. SM4984 48V i/p, 18V, 5.6A o/p.
SM4965 12V i/p, 21V, 4.8A o/p. SM4975 24V i/p, 21V, 4.8A o/p. SM4985 48V i/p, 21V, 4.8A o/p.
SM4966 12V i/p, 24V, 4.2A o/p. SM4976 24V i/p, 24V, 4.2A o/p. SM4986 48V i/p, 24V, 4.2A o/p.
SM4967 12V i/p, 48V, 2.1A o/p. SM4977 24V i/p, 48V, 2.1A o/p. SM4987 48V i/p, 48V, 2.1A o/p.
SM4968 12V i/p, 13.8V, 7.2A o/p. SM4978 24V i/p, 13.8V, 7.2A o/p. SM4988 48V i/p, 13.8V, 7.2A o/p.
SM4969 12V i/p, 27.6V, 3.6A o/p. SM4979 24V i/p, 27.6V, 3.6A o/p. SM4989 48V i/p, 27.6V, 3.6A 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:

15A

15A

7.5A

Input to output isolation:

500Kohm +/- 63V

 

 

OUTPUT SPECIFICATION

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

0.5% max.

Output 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.