Hi, does anyone can help me to understand how Velleman suggests the transformer for the K1823 and K7203 power supply kits?
K1823 - LM317 based 0-30VDC @ 1A max
1 - Suggestion is 24VAC / 50VA or 28VAC / 50VA - with this one I can understand, I just can’t get a 28VAC, can I use a 30VAC? I did some calculations and it’s supposed to have at least 28V DC with a 24VAC…
2 - Fuse suggested, is 250mA at mains (before transformer)… If we are consuming 1A, why 250mA?
K7203 - 0-30V @ 0-3A
2 - again fuse here is 800mA, is it enough?
And now… what about add a voltmeter and ammeter to K1823 and K7203?
And… having the possibility to vary current, limit current, is it possible?
Thank you in advance.
Alex.