It used to be that delivering high current to a CB radio setup meant wiring up a big and heavy power supply, but the construction of smaller and smaller switch mode power sources has drastically cut down on the package size.
This means you can place them easily and if for some reason you need to use more than one, its not going to take up more space than your radio collection 🙂
The main reduction in size comes from being able to deliver the same sort of current with a smaller transformer than standard mains step down supplies.
TekPower TP30SWV 30 Amp DC 13.8V Digital Switching Power Supply
See latest pricing and customer reviews on the TekPower TP30SWV Power Supply over at Amazon.com
TP30SWV Quick Specs
Input : 110V AC 60Hz
Output: 13.8V DC (9-15V adjustable) at 30 Amp Maximum
Cigarette Plug: 10A max
Snap in output: 3A max
Dimensions: 7.5 X 2.8 X 7.5 inches
Overall Weight: 6 lb
In The Box
TP30SWV Power Supply
TekPower TP30SWII 13.8V DC 30 Amp Analog Switching Power Supply
See latest pricing and customer reviews on the TekPower TP30SWII Power Supply over at Amazon.com
If your happy to do away with the digital readout in favor of an analog type then there’s a cost saving to be had. The TekPower TP30SWII will give the same performance as the first model on this page, but with all your information displayed by a traditional moving needle meter instead of a digital version.
In The Box
TP30SWII Power Supply unit
Caring for your Switch Mode Power Supply
Where a mains voltage is changed down to the level that can power mobile communications equipment, there is a certain amount of heat generated. Failure to dissipate this heat will bring a quick end to any power supply.
Give supplies like the ones listed above a bit of breathing room by not boxing them in with other radio gear.
Running a supply near (or at) its maximum output for prolonged periods is going to shorten its lifespan. Always use power supplies that will easily run the equipment attached to it with some capacity to spare.
Every time I look at switch mode supplies it reminds me of one of the more interesting jobs I’ve had over the years, where every new model of switch mode supply we produced had to be tested to destruction 🙂
This meant long days building up prototypes then subjecting them to extremes of heat, cold and voltage shoved in all the wrong places until they went bang!
These were more specialized industrial units than ones needed to power a CB radio and it wasn’t enough just to know how much they could do, but also how much they could take before failing.