Hi,
The hotend Im using is one purchased from 3dgadgets: Budaschnozzle 1.1
with a ceramic cartridge heater : ceramic heater
I measured the resistance in the following manner:
whilst powered down and disconnected from the power source:
Result = as low as 1.45 MOhms (although the value slowly decreased, and I tried this between both thermistor pins and both hot end power connections on the ramps board (so neg to neg, pos to pos, neg to pos, pos to neg))
when the power supply is connected this value drops to about 1000 Ohms
when connected and both hot end and heat bed engaged in heating the values drop (to about 1.40-1.20 MOhms) as it reaches the desired temp at which point it shuts of.
The hotend Im using is one purchased from 3dgadgets: Budaschnozzle 1.1
with a ceramic cartridge heater : ceramic heater
I measured the resistance in the following manner:
whilst powered down and disconnected from the power source:
Result = as low as 1.45 MOhms (although the value slowly decreased, and I tried this between both thermistor pins and both hot end power connections on the ramps board (so neg to neg, pos to pos, neg to pos, pos to neg))
when the power supply is connected this value drops to about 1000 Ohms
when connected and both hot end and heat bed engaged in heating the values drop (to about 1.40-1.20 MOhms) as it reaches the desired temp at which point it shuts of.