Can two 12vdc, 220degC, PTC heaters be connected in series and powered by 24vdc? Both PTC's will have the same symmetrical contact area with a heat sink in an insulated enclosure.
PTC's are each in a 25x150x5mm aluminum enclosure. Heat sink is a 25x170x6mm rectangular copper tube (22x3mm internal c.s.), sandwiched between the PTC's, with internal fluid flow.
Dead cold, at 12V, current was 5.2A for a single PTC heater, so cold R=approx 2.4ohms.
Basic question is whether they will adequately balance in temp vs current response.
Thank you.
PTC's are each in a 25x150x5mm aluminum enclosure. Heat sink is a 25x170x6mm rectangular copper tube (22x3mm internal c.s.), sandwiched between the PTC's, with internal fluid flow.
Dead cold, at 12V, current was 5.2A for a single PTC heater, so cold R=approx 2.4ohms.
Basic question is whether they will adequately balance in temp vs current response.
Thank you.