03-03-2019, 06:28 PM
If you have 2 power supplies already, then you have the means to make a dual rail supply - the outputs from bench power supplies are not connected to ground, so you can connect them together in the same way you might with batteries. Though you'd need to double-check that point on both your supplies - especially the Blaupunkt, which is not a bench power supply, so should not be used on the bench IMHO.
But what is important is that they both have an adjustable current limit. I suspect that you might not have that option, certainly not on the "danger-Blaupunkt".
So making a dual supply from a spare transformer probably won't help, as you won't have the adjustable current limit. Nor the means to adjust the voltage (unless you power it via a variac).
Some bench power supplies have non-adjustable current limiting, but I no longer have any of that type. They are an accident waiting to happen, frankly.
My spare unit is a Thurlby Thandar PL320 QMD. Have a look at second-hand prices, then make me an offer via PM. I might be able to get it delivered in about a week from now. Note that I'm not desperate to sell it, as one can never have too many bench power supplies.
But what is important is that they both have an adjustable current limit. I suspect that you might not have that option, certainly not on the "danger-Blaupunkt".
So making a dual supply from a spare transformer probably won't help, as you won't have the adjustable current limit. Nor the means to adjust the voltage (unless you power it via a variac).
Some bench power supplies have non-adjustable current limiting, but I no longer have any of that type. They are an accident waiting to happen, frankly.
My spare unit is a Thurlby Thandar PL320 QMD. Have a look at second-hand prices, then make me an offer via PM. I might be able to get it delivered in about a week from now. Note that I'm not desperate to sell it, as one can never have too many bench power supplies.
