Hi guys,
I want an adjustable dual power supply both voltage and current to power op-amps.
My goal is to have an electronics workbench and so far the only thing I lack is a dual power supply.
Because standard dual bench power supplies are pretty expensive, I decided to buy a couple of Hiland kits linear adjustable power supply and a couple of 24 VAC transformers.
I have mounted them and work. Now I would like to connect them in series to use them as a dual power supply.
The only problem is that I don't know if with this kit the units will blow up.
Below you can find the circuit diagram of the hiland kit

And this is the link of the product. I'm sure more than one person here knows this kit.
https://www.banggood.com/0-30V-2mA-3A-Adjustable-DC-Regulated-Power-Supply-Module-DIY-Kit-p-958308.html?rmmds=searchShould I be worried when connecting the supplies in series?
Other products like the DPS and RD series don't allow connection in series or parallel, as stated by the designer.
Does anybody know an affordable adjustable symmetric power supply?
thanks in advance.