Notebook Power Adaptors (35W)
35W SM3750 Notebook Power Adapter..
ALLOWS DIRECT POWERING OF NOTEBOOK COMPUTERS
CAN BE USED FOR BATTERY CHARGING
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 chassis 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 popular 2.5mm concentric plug.
The converters are mainly designed for use with notebook computers that have two wire input. These converters are current limited above a certain level of demand. The output isolation of the converter from the 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:
| SM 3750 12V input, 5V at 6.5A output. | SM 3760 24V input, 5V at 6.5A output. |
| SM 3751 12V input, 9V at 3.9A output. | SM 3761 24V input, 9V at 3.9A output. |
| SM 3752 12V input, 12V at 3.0A output. | SM 3762 24V input, 12V at 3.0A output. |
| SM 3753 12V input, 15V at 2.4A output. | SM 3763 24V input, 15V at 2.4A output. |
| SM 3754 12V input, 18V at 2.0A output. | SM 3764 24V input, 18V at 2.0A output. |
| SM 3755 12V input, 21V at 1.7A output. | SM 3765 24V input, 21V at 1.7A output. |
| SM 3756 12V input, 24V at 1.5A output. | SM 3766 24V input, 24V at 1.5A output. |
| SM 3757 12V input, 48V at 0.8A output. | SM 3767 24V input, 48V at 0.8A output. |
| SM 3758 12V input, 13.8V at 2.6A output. | SM 3768 24V input, 13.8V at 2.6A output. |
| SM 3759 12V input, 27.6V at 1.3A output. | SM 3769 24V input, 27.6V at 1.3A output. |
Specification:
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INPUT SPECIFICATION |
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12V TYPES |
24V TYPES |
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Battery: |
12V Nominal car battery (not leisure types). |
24V Nominal car battery (not leisure types). |
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Voltage Range: |
11-15V (10.5-16V Short term). |
22-30V (21-32V Short term). |
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Current, No Load: |
0.1A Typical. |
0.1A typical. |
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Current Drawn Per 10W Load |
1A. |
0.5A. |
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Input Fuse Rating: |
6.3A 5 x 20MM (T). |
6.3A 5 x 20MM (T). |
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Input to output isolation: |
500Kohm +/- 63V |
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OUTPUT SPECIFICATION |
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Output variation for 0-90% load change (plus drop in cable) |
0.5% max. |
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Output variation for 2V input change: |
50mV max. |
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Output current limit(See note 2): |
125% +/- 17%. |
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Output low frequency ripple: |
200mV max. |
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GENERAL |
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Size: |
111mm x 60mm x 30mm. |
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Weight: |
0.38 Kg. |
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Storage Temperature: |
-40 to +70C. |
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Operating Temperature: |
-20 to +35C. |
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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 ± 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.