Good day everyone.
I have just joined ABC and it looks like I will enjoy exploring the wealth of information available.
My present problem involves making the output from a small autopilot, on a boat, drive a much larger load. Now it drives a motor of approximately 2A load and I wish to make it drive a hydraulic motor load of approx. 20A.
The output from the autopilot is DC 12v and it changes polarity depending on the direction selected.
I have come up with two DPST relays whose coils are grounded on one side and the other side of the coils alternately go to the output of the autopilot. Hence when either coil is activated the contacts, which are connected to a 12V source, give a switched polarity and drive the motor.
The problem I am seeing with this idea is that if either of the relays were slow in operating a short would occur.
I hope my convoluted description of what I am trying to make makes some sense and someone can help me.
Regards
Brian
I have just joined ABC and it looks like I will enjoy exploring the wealth of information available.
My present problem involves making the output from a small autopilot, on a boat, drive a much larger load. Now it drives a motor of approximately 2A load and I wish to make it drive a hydraulic motor load of approx. 20A.
The output from the autopilot is DC 12v and it changes polarity depending on the direction selected.
I have come up with two DPST relays whose coils are grounded on one side and the other side of the coils alternately go to the output of the autopilot. Hence when either coil is activated the contacts, which are connected to a 12V source, give a switched polarity and drive the motor.
The problem I am seeing with this idea is that if either of the relays were slow in operating a short would occur.
I hope my convoluted description of what I am trying to make makes some sense and someone can help me.
Regards
Brian