Power Tech Plus Compact DC Powerpack
Model:MS-3130Compact size, lightweight with 1A current capability (@12V)Short circuit & overload protectedFar superior to linear power supplies when precise, stable voltages are required in a very compact form.A linear power supply is much heavier (for the same current capabilities) and the open circuit voltage for say a 7V output could well be up around 11-15V until under load – some equipment will not like this at all.This power pack providesREGULATEDslide switch selectable:
12 – 9 – 6 – 4.5 – 3V DC output @ 1 Amp (1 Amp is at the 12V setting, a higher current capability could be expected at the lower voltages but I have no figures for these)

Just slide the red switch on the unit to the desired output voltage.WARNING!!!NOTE:Current output plug polarity is currently set asCentre hole = NEGATIVEBarrel = POSITIVEThis isreverseto the polarities commonly used in domestic/IT equipment but is often found in audio processing equipment for rack mounting.The DC plug is removable and the polarity can be easily reversed by the user.The wordTIPstamped into the cable end and the plug is marked + or – so with care you will not accidently reverse the polarity.Just the one DC plug supplied, as fitted – it has a 2mm centre hole, 5mm diameter barrel and the barrel is 12mm in lengthThe DC power cable is 170cm long

TESTING:I have tested this power supply, the outputs are extremely close to the specifications e.g at the 12V setting I read 11.98V

Stored and supplied in sealed plastic