Buy Regulated PSU Triple Out 0-30V 5V 12V 10A - designed for use in general electronic servicing in the laboratory, workshop and classroom. It can be used in either constant voltage with current limiting or constant current with voltage limiting modes. Features three independent outputs, two fixed voltage and one variable voltage.
One 0-30V variable output
One 5V 500mA output and one 12V 500mA output
Separate digital voltmeter and ammeter
Current limiting LED indicator
Adjustable current control
Overload and short circuit protection
Robust, galvanised steel case
Polycarbonate front panel
Screw on connector for variable output, snap on connectors for fixed outputs
Q. You claim
"Can be used in either Constant Voltage with Current Limiting or Constant Current with Voltage Limiting Modes, Current Limiting LED Indicator, Adjustable Current Control".
The manual gives no mention to the 2 modes. Can you explain how this achieved.
A. Thanks for your enquiry Dave. These are options which can be found on the front panel. It offers a 12 or 5v output limited at 500ma or an output that is adjustable to up to 30v DC at 10 amps.
Reviews
Great PSU
Reviewed by: Dan M - 23 March 2013
Stable operation, relatively high current output compared to other PSU's in a similar price range and so far they've proved to be very reliable. I've bought 3 of these over the years and they're in constant use on various projects with no issues.
Only downside is the rather noisy mains hum from the very chunky transformer inside but if its being used in an active [read noisy] lab/workshop environment this won't be noticeable.
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Reviewed by: Alec Wright - 17 December 2011
Nice power supply. The three outputs seem to be isolated from each other and from ground. The panel meters are reasonably accurate. It's linear so contains a big bulky transformer and voltage regulator transistors bolted to a big, forced-air cooled heatsink. I wasn't expecting it to perform to specification and actually provide 10A continuously but it seems fairly stable driving 11.3A into a short circuit. Set it to 13.8V and it's perfect for driving your amateur radio/automotive equipment. The current limit is useful for testing: crank the limit up until something happens. One design flaw with this power supply is that it has a big line frequency transformer in a steel box, which makes it quite loud: a lot of mains hum. The cooling fan generates more noise still but i suppose that's unavoidable in a linear power supply of this spec. It doesnt switch on all the time, there seems to be some sort of thermal control switching it on and off. The constant voltage outputs seem to just be a simple transformer --> bridge rec ---> 78xx linear reg arrangement.
I'd recommend this psu if you can put up with the size, mass and noise.
Reviewed by: Peter Green - 17 April 2009
Pros: Fairly cheap High current output Cons: very heavy hums annoyingly only one variable output conclusion: if you want a 10A lab PSU on a tight budget and dont care about the noise and wight this may be a good choice but for general lab use I would want something quier and lighter.
