I was visiting a home in a new subdivision yesterday and on one of the lightpoles there was a device I could not identify. It appeared to have a small solar panel on one side of a nema rated looking sealed box with 4 rods (antennae?) coming out of it, 2 up, 2 down. I have no idea what this...
How would a charge controller generally used to charge batteries with a solar panel input know or care whether the input voltage was being generated from solar power or by a different source?
I'm told it can't /shouldn't be done, but I don't know why.
As far as I know, the voltage out of a...
What would you guys suggest as the most reasonable way of protecting against the effects of a lightning strike and or residual transients to equipment? I've already suggested using a groundrod tied to the chassis and with minimal travel path from unit EG connection point to the rod.
There are...
Why would a 'smart' battery charger care what type (lead acid, gell, etc) of battery it is charging? Wouldn't the demand be dictated by voltage level reguardless of material?
I know much has come up about this, but I haven't seen any answer to the question of, if I'm going to put a 60Hz motor into service with a 50Hz supply, in order to get the V/Hz ratio down by reducing the voltage...is there any 'voltage divider' way of doing it...in other words, without a VFD or...
OH.....and on certain "ok" pushes, there may be a delay of up to a minute! This is ridiculous....I build an 8085 20 years ago that reacted faster than that no matter what you did!
SIEMENS LOGO 12/24RC...0BA6....LOGO Soft Comfort V6.1.5....
The manual for the above is very unclear on navigation as far as editing an existing program on a LOGO. I have a timer I'd like to change the retentivity on at the LOGO.
After several hours of working with it, I think I'm close...
Is there any rule of thumb other than the above mentioned? Although it may err on the high side, I've added the motor fuse value to the highest branch circuit fuse and rounded up to nearest typical value when asked, which is not very often.
The pump is pumping hyd fluid into a pressure vessel....what I'm told they've done is remove everything between the pump and vessel (valves, etc) and ran a hose directly to it. Everything is fine until it gets to some (not sure what) pressure....then the noise begins. Running the fluid with no...
the time between the motor power being cut and actually stopping is too short to determine. Probably 1s or less. I don't actually have it in front of me, but I know the system.
Is there any electrical mechanism that I'm just not able to figure out that would cause a motor running under typical conditions to make an exceptionally loud noise under load? I'm fairly certain it's mechanical, but I'm being told it could be electrical and I just want to rule out anything...
