Hi all,
Just started to actually used my recently purchased TENMA 7210505 power supply and it turns out it is having a current limit problem on channel 1.
If I set the current limit to anything lower than 87mA, the channel goes into Constant Current mode as soon as I enable it (without external load), although it displays "0" for the drawn current. Once I gradually increase the current limit, the channel goes out of that state and manages to eventually ramp up the voltage to whatever value it is being set to.
For the moment, I am not sure if this is a bug or "feature"; I plan to open it up over the weekend, but until then I would be interested in knowing if anybody else had a similar problem, if it is a fairly common thing for these "cheapies" and how you solved it if you faced that.
Regards,
Cristian