I tracked down the parasitic draw on a few of the machines that were in question. One was an FM radio another was a CB radio that were drawing current.
As far as the hour meter being energized while the machine is off the hour meter part is not on just the radio which is listening for the data...
I wanted to clarify something from the post above. When I say idle I mean parked for a few days. Also we had some guys who installed this system for reason only hook the hour meters up to 1 12v battery.
Yes you are correct "it's smoked" they are in series. As far as size they are 8d 160ah equipment batteries. We installed an hour meter which transmits hours every hour for about 3 seconds. The equipment is mostly wired like I described for 24v from 2 12v batteries. When the equipment is running...
I have what may seem like a dumb questions but I am going to ask anyway. If I have a parallel circuit with two 12v batteries. So positive and negative are connected on one side while the positive and negaive are delivering 24v from the remaining two terminals. If I install an item that draws 40...
I have a basic question here, what exactly does an H-bridge controller IC do for me? If I were to build a simple h-bridge from an N type enhansement type MOSFETS where would the controller come in?
I know this could turn into a much deeper discussion, that is not really what I am looking for...
Yes, I did purchase the correct controllers.
I have a DC clamp and a USB Scope. It is not a real fancy one, it is the PropScope from Parallax. It seems to do the job. I use it quite a bit with the different timing circuits serial communication etc. that I have messed with in the past.
I will...
When you say calculated current do you mean what I calculated/measured. Or what I should be able to calculate after measuring across the armature?
Thanks.
I have two motors that normally run on 24volts, these are Jazzy Jet 3 motors which have no data! I am trying to determine what the stall current is so that I can select a proper driver etc. The wires that supply power to the motors are 14ga. I measured the resitance across the A and B terminals...
I purchased to correct controllers as suggested by someone early on.
I do realize that I have a lot to learn which is awesome because learning is my favorite part about the engineering profession. I learn something on every project that I take on.
The reason I posted the drawing is that I...
http://www.accessconnect.com/images/batteries_series_parallel.jpg
Apparently my terminology was not accurate, the link above is a diagram from google as one of you helpful EEs suggested. This is what I was taught in school to be a series parallel circuit.
I don't mind being wrong but I don't...
I would like to thank you guys for your rapid responses and for all of the help. I believe I will return them and get the ones rated for the proper voltage. I just didnt want to go through the hassle of mailing them back etc. only to find out that with a couple of components I could have used...
no i was actually just trying to make sure i had my terminology correct. I started off as a technician in the Marine Corp and then worked in the crane industry as a service technician before I started into rigging engineering which is basically structural applications of statics. I have a pretty...
You are right there are some systems that use 24v to start and 12v to run. I meant when a piece of equipment is 24v start and 24v run then they are wired in series parallel. Are you saying that two batteries wired positive to negative with the vehicle connections on the ends--the other positive...
I was taught that if you hook ground to the chassis on 1 battery then the positive lead to the negative lead on the other battery you will get the battery voltage x 2 between the positive of one battery and the chassis or ground of the other. Thus is a series parallel arrangment. Every piece of...
Guys I appreciate all of the feedback. Question, If I connect a 12v and 6v in a series parallel arrangment will I get 18v? I have never tried to mix the voltages.
I purchased some "high power" motor controllers from the Pololu site for robotics. I meant to purchase the ones that were rated 24v. The ones I have are rated at 18v. I am going to control speed and torque of the motors via a PWM signal from the motor controllers I just need to step the voltage...
