pfalstad/circuitjs1

Coil voltage on open relay contacts ?

rolox2022 opened this issue · 2 comments

Hi, i noticed a strange behaviour:
there seems to be some "interconnection" between coil and contacts of a relay ....
can be reproduced with simple circuit attached.
relay issue
relay issue.txt

Edit...its obviously a misunderstanding on my side...the parameter "off resistance" is by default 1M which affects low current signals switched by relay and also is related to contact-contact resistance as kind of "isolation resistance"
As in the example no current is applicable with only testpoints, the full 5V show up at the open contacts ....

Yes, that's correct. You need a pulldown resistor if you want the open contact to be grounded.