I was in the lab today working on a circuit and it wasn't behaving as I expected. I diagnosed the problem as an irregular supply voltage from a 7805 voltage regulator. I am supplying it with 15 volts (also tried 12 volts) and getting 5 volts out. When the resistance of the circuit is low...
I am looking for a single chip that can take a number of inputs (preferably 16) and based on the signal of one digital control input forward a set of 8 of them to outputs.
A made up example to clarify: We have 8 sensors for use in the day and 8 for use in night, and we can only process 8 of...
I would like to thank everyone for the help I have recieved directly and for the knowledge I have gained by reading other peoples threads.
I am wondering how companies make replace or repair decisons for thier electric motors. As far as I can tell the following would be factors in the...
I am asking the general question of what would cause the current requirements of a motor at full speed with no load to increase after being in use for a length of time.
Below are more details specific to our problem, although not necessary for the question.
We have a number of specialty 2HP...
I am working on a maintanence/reliability team and I am setting up a database to track motor failures. I was considering tracking the temperature/humidty of the area where a motor fails but I am not sure of the benifits that would have. Any comments on if we will find a direct link between the...
I am trying to determine how much power a pump is using. The pump is attached to a 15HP motor through an eddy current coupling. I can find out how much power the motor is using at any given moment as well as the shaft speed on the pump side of the ECC. Is there a way to determine how much...
I am working in a pulp mill and it would be usefull to know if the percentage of failures that we experience due to certain causes, such as bearings, are online with what other plants are experiencing. For example if we had 70% of failures from bearing problems and the rest of the world had on...
