Hi all,
When experimenting with the NTC circuits, I noticed that there’s a difference between the Legacy and modern NTC version.
Although the module looks the same, the actual NTC component differs in value.
The legacy NTC looks like a carbon resistor and has a value of 15k Ω at 25°C or 77°F.
The modern NTC has a value of 6,8k Ω at 25°C or 77°F.
Since this is quite a big difference, care must be taken when designing circuits.
For further experiments, I will add the NTC value on the diagrams to avoid errors.
If you look at the post “The Impossible circuit”, I redesigned experiment 46 of the school (Ubung) system manual with different versions. Have a look and try these circuits out !
Many greetings