wombweller
Member
Hi
Looking for theoretical advice on how to choose the right size potentiometer for a project.
I have a master clock that runs 3 external slaves and it's internal slave and normally if I were adding extra slaves to the the series circuit I would up the supply voltage by 1v per 3ohm coil on each slave and just keep adding on where required.
Now I want to add a relay box into the circuit where the relays within box are also in series with the slaves.This relay box will have it's own power supply for the external devices going to say 4 relays and I need some form of control to the amount of supply going to the external devices the relays are switching. I'm thinking of using Potentiometers for that purpose but I'm not sure about the size required. I will need to adjust between say 3 and 20+v. Normally within my master are old rheostats but I'm not sure about picking these up these days.
Any advice on the potentiometers size and other methods will be great.
Regards
Looking for theoretical advice on how to choose the right size potentiometer for a project.
I have a master clock that runs 3 external slaves and it's internal slave and normally if I were adding extra slaves to the the series circuit I would up the supply voltage by 1v per 3ohm coil on each slave and just keep adding on where required.
Now I want to add a relay box into the circuit where the relays within box are also in series with the slaves.This relay box will have it's own power supply for the external devices going to say 4 relays and I need some form of control to the amount of supply going to the external devices the relays are switching. I'm thinking of using Potentiometers for that purpose but I'm not sure about the size required. I will need to adjust between say 3 and 20+v. Normally within my master are old rheostats but I'm not sure about picking these up these days.
Any advice on the potentiometers size and other methods will be great.
Regards