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I dont know. Dont want to make to much out of it though. one thing for sure, its safe, we all agree on that. just going to ship it and small chance it will come back

thanks Che12345 and Waross Genreally with most med devices similar to our companies, many companies ship them without plugs and put the burden on the installer to take care of it. The customer has explicitly stated that now, 2x that they want this plug on it and that it will be used with...

thank you. Im not worried about the dielectric. its generally about 1000V per mil, no doubts the cable will not fail at 250VAC ITs just more of UL rating question technically the rating is for 120

thanks, i figured that part out but the plugs are all rated for 120VAC so thoughts on what to do?

shipping a unit to thailand from usa. customer in thailand insists they want type B plug on unit and that it runs at 220VAC type B looks like nema 5-15P but all I can find have 120VAC ratings not 220V AC thoughts? just give them the 120VAC rated device?

thank you all FacEngrPE has the answer I was hoping for in the link Higher frequency harmonics can have adverse effects on a transformer’s core as well. In an AC circuit, the polarity of the magnetizing current in the core switches back and forth with the direction of the applied current. In...

overheating is thermal shutdown at 110c thermal fuse within ISO we measure around 48C external

. We have a 1800W isolation transformer that is overheating in 2 hours even though the measured VA is about 1800W. Yes we have plenty of cooling on it, it just heats up very quickly. We know that there is noise generated from the power factor correction algorithm on the amplifier on the...

Hi Lionel the phoenix is a DIN rail mount and the ones we are having problems with are on the PCB. Thery are much smaller. I think we build another PCB that does not have the problematic PCB mount relays though and then use the DIN rail PCB as an interface. we are sure at this point it has...

The common collector inputs are part of a COTS system. We have 5 of them and they all do the same thing. I think the issue that the PCB mount relays just do not work with a common collector configuration as the "turn on" voltage is just too high while the DIN rail relay one turns on a very...

Dave - Interesting problem. WE dont have any magnetics nearby. This is very simple. I think the problem is how to use the Open collector to power the relay.

It stays in the NO configuration without power which is surprising as NC is the default which is expected with power off. We use this relays many PCBs designs for decades without problems. This is a new design that interfaces with an open collector which is new. Its something about hte open...

it Lionel - its done it consistently in about 10 different relays on a total of 4 PCBs. I think the coil not getting enough voltage to move to its primary position and then cant move back to the NC position.

yes, they are getting pretty close to 0, around 0.2VDC

Hello, We have a device we are interfacing with that has an open collector input which are labeled as "pin2" and "INTLK" shown below. We are trying to activate a relay coil when the open collector pulls the coil down to 0V when its active. The problem we are having is that on about 1 out of...

found a cell phone application. all set, thanks

We are replacing an obsolete bluetooth SPP (bluetooth classic) module. We would like to compare the received power from some of the new devices to the original device. I would have thought there was a simple way to do this? Matlab has a bluetooth toolbox that has a command BLElist that gives...

There seems to be 2 different ratings used for current in power cables. Im not totally sure what the relevance of each is. Lets look at this cable Qualtech 313010-01 The datasheet says it is rated for 13Amps However, there is a table for appropriate currents used for power transmission...

thank you IRstuff, 3DDave, and itsmoked This makes perfect sense. Really appreciated.

A common scenario for field service is that someone will unplug a system they are working on before taking it apart. Then the person will typically put on ESD protection. Usually the alligator clip on ESD protection (to the wrist band) gets attached to the equipment frame but if the equipment...