TT Electronics SW3518-VI 7.5V 1A Mini Plugtop Sw Mode PSU

Order Code:

85-2956

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Brand: TT Electronics Copy to clipboard MPN: SW3518-VI Copy to clipboard

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Discontinued

Product Details

A miniature power supply that offers switch mode performance.

Supplied as 7.5V, 1.0A
Output connector 2.1 x 12mm plug
Wide input voltage range
Short circuit, overvoltage and over current protection
Fitted with 140cm cable

Output Voltage (DC)	7.5V
Output Current	1A
Power Rating	7.5W
AC Input Plug Nationality	UK
Output Connector	2.1 x 5.5 x 12mm female barrel
Supply Voltage Range	90 to 264V
Dimensions	(L x W x H) 52 x 29 x 89mm
Polarity	Centre positive

Questions

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01 December 2011 Question by: Rapid Customer | Product code: 85-2956

Q. What is the plug dia of this unit? Do you offer a smaller rating of say, 250ma We need to charge 6 v lead/acid batteries battary rating 1.3 A/h

A. Hi Mark, thanks for your question. The output is the standard 2.1mm barrel connector; 2.1 refers to the size of the hole in the centre. The outside diameter is 5.5mm. For use as a charger we would recommend the use of a blocking diode. The supply won’t like it for long with the battery voltage going back into it. The unit will fail after a time in this condition as this is a power supply not a charger. The use of a suitable diode will prevent damage but there is a disadvantage. The diode will drop the voltage by 0.7v to the battery.