thanks for replying.
i don't get the part where using two relays would turn the motor forward and back... wouldn't energizing a relay just close one circuit? Positive OR negative, NOT both positive AND negative?
therefore wouldn't i need 4 RELAYS? 2 Relays for forward, and 2 more relays for reverse?
for example: Relay 1 supplies + to the motor WITH
Relay 2 supplying - to the motor = FORWARD rotation
then Relay 3 supplies - to the motor WITH
Relay 4 supplying + to the motor = REVERSE rotation
i would be triggering/energizing RELAY 1 & 2 with the same current by using the switch forward position, ditto with RELAYS 3 & 4 by using the switch reverse position... at least that's what i think with my LIMITED knowledge of relays... HELP!!!!
this is what i THINK i know of relays: there is a contact that when ENERGIZED(supplied with positive current) closes a switch, which completes a CIRCUIT... this circuit is INDEPENDENT of the energizing contact, which means i can assign a POLARITY to the CIRCUIT. am i making sense? so sorry.
I hope i'm missing something here coz i don't want to use 20 relays total... I hope i can get away with using just 2 relays per motor which i think is supposed to be the case...
help!!!