Hello,
i am trying to display the waveform on the secondary of a (low voltage) transformer secondary. It´s a self-built 1:1 transformer at 12 volt.
I can see the signal on the primary as my scope ground alligator clip is connected to common ground.
But on the secondary side, there is no common ground so i connected the alligator clip to one side of the load which for test purposes was a 15 Watt lamp and the other scope probe hook onto the other side of the lamp.
Is that the right way to scope the secondary?
Because except some tiny millivolt spikes i did not get any signal.
I am new to measuring and transformer building and want to learn more about it, so my question might cause some frowns but i hope someone more knowledegable with
these issues might be able to help.
Thanks.
But on the secondary side, there is no common ground so i connected the alligator clip to one side of the load which for test purposes was a 15 Watt lamp and the other scope probe hook onto the other side of the lamp.
Is that the right way to scope the secondary?
Because except some tiny millivolt spikes i did not get any signal.
It sounds as though you have connected correctly.
Was the 15w lamp illuminated?
If it was, there was obviously voltage there and your scope leads were not making good contact.
Thanks for the reply JimB. It also turned out that i have a really bad coupling between primary and secondary and have to catch up with learning how to design the transformer properly.