Would like to power two 12vdc PTC heaters simultaneously.
They will be in parallel and each at about 2.5ohms cold. That would be about a 10A surge. I would like to drop that. So, would putting an NTC in series ahead of the two PTCs buffer the initial surge?
The circuit would have an "on" time of maybe 10 minutes to preheat a heat sink. That cycle would not repeat for at least 15 minutes and very infrequently....maybe 5 to ten times a week.
Expecting to see current increase as NTC heats up, reducing a surge as the PTC heaters see a slowed current application.
Thank you.
They will be in parallel and each at about 2.5ohms cold. That would be about a 10A surge. I would like to drop that. So, would putting an NTC in series ahead of the two PTCs buffer the initial surge?
The circuit would have an "on" time of maybe 10 minutes to preheat a heat sink. That cycle would not repeat for at least 15 minutes and very infrequently....maybe 5 to ten times a week.
Expecting to see current increase as NTC heats up, reducing a surge as the PTC heaters see a slowed current application.
Thank you.