After using the little TS100 soldering iron on many projects over the past couple weeks, I have come to the same realization many others have... I don't want to use an old school ceramic core iron ever again!

This got me wondering; how do these cartridge soldering tips with the integrating heating element and temperature sensor work considering there are only two contacts? After all, traditional old school pro irons use 4 wires/contacts (2 for the heating element & 2 for the temp sensor).

Here's a little demonstration along with my hypothesis.

TS100 Soldering Iron Unboxing & Review video:
   • TS100 Soldering Iron Unboxing & Review  

Full TS100 Soldering Iron Written Review On My Site:
https://www.rchelicopterfun.com/ts100...

TS100 Soldering Iron:
https://www.banggood.com/custlink/m3v...

TS100 Cartridge 7 Tip Set:
https://www.banggood.com/custlink/DGv...

Here's the Ksger T12 station I'm seriously considering so I can have a dedicated cartridge tip type soldering station for bench work:
https://www.banggood.com/custlink/GDK...

Ksger / Hakko FX951 Cartridge 10 Tip Set:
https://www.banggood.com/custlink/GKD...