I have a circuit consisting of 4 relays and 3 dc motors, with 4 diodes, resistors, and leds connected within. I have two 6 volts battery from the UPS. I need to obtain a negative voltage so I do workarounds with the two 6 volts battery so that the terminals are +6, GND, and -6 volts.
The problem is, the battery gets drained (or the voltage supply decreases to 2 volts) when the circuit is fully constructed. Proper output cannot be obtained. (By the way, each component of the circuit perfectly works well)
I am planning to have a separate voltage supply or battery for the relays and the dc motors. I wonder if this is the right thing to do.
What can you suggest?