Hi,
I have a Velleman k8055 that I would like to use to drive 2 to 3 x 12VDC (160 Ohm) relays. These each take a current of 75mA @ 12VDC so the combined current if driving 3 relays simultaneously would be 225mA.
The instructions accompanying the k8055 kit indicate that the unit has ‘8 Digital open collector output switches (max 50V/100mA)’ but the instructions do not specifically say whether the 100mA current rating is the maximum combined current operating accross all DO’s simultaneously, or whether the board can cope with all 8 DOs activated simultaneously and each driving loads at 100mA (total current consumption for all 8 DOs at 800mA).
Can anyone shine some light on this please ?
Cheers, A.