Tried to load your file, but got a dialog box that saidOk that be done,
I have a circuit that worked, I am now trying to insert a SCR in the place of a Opto and Triac, thats when the message comes up.
All to the left of R13 works but I want to switch a 12V d.c. load of about 50W.
This being a newb is real tough
I don't think so. The only way to reduce a DC current to zero is to interrupt the flow of current. See the following page:Hi,
that could be my problem then, I tried with a Mosfet and got the same response. Is it best to use the opto which has a zero crossing circuit?
No, you didn't miss anything. I already had it in my SUB folder. I had downloaded it from Teccor several years ago. it looks like the file has changed somewhat since Littelfuse acquired them. It appears that the first file listed here is basically the same thing, without the troublesome header.Did I miss something? Where was the file Teccscr.lib? Did you actually find it on the web?
thanks for the effort it is appreciated. Problem fixed on my side too now.
I tried numerous options last night, I can get to switch a.c. but switching d.c. is proving to be entirely another matter.
Pappabravo, could not find a model for the VN340 so was unable to try it. Are there any standard devices in the standard libraries that will work?
PS: Will I still need the MOC3081?
OK progress. Used an N channel Mosfet and the circuit switches but out of phase I think. Heater appears on when it should be off?
Tried a P channels Mosfet and it never turns off.
Why would the current be a negative value?