Measured heatbed heat up times at 12V and 230V - how to speed it up? July 11, 2018 05:07PM |
Registered: 9 years ago Posts: 94 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 11, 2018 05:32PM |
Registered: 11 years ago Posts: 5,780 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 12, 2018 03:42AM |
Registered: 10 years ago Posts: 14,672 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 12, 2018 04:20AM |
Registered: 8 years ago Posts: 5,232 |
Quote
The resistances are 0.8 Ohms and approx 43.2 Ohms for the 12V and 230V heaters, respectively. That translates to 180W and 1200W, respectively. However, I am sure that my calculation for the 230V heater is not all correct as 1200W seems way too high.
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 12, 2018 06:01AM |
Registered: 12 years ago Posts: 1,450 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 12, 2018 01:31PM |
Registered: 9 years ago Posts: 465 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 12, 2018 02:18PM |
Registered: 10 years ago Posts: 14,672 |
Quote
o_lampe
1200W is correct, when your resistance reading is truly 43.2Ohm. I'd be concerned about getting hotspots while heating up, because the alu-plate might not spread the heat fast enough. The heater could overheat here and there and silicone gets brittle...
You could add a single diode in the mains voltage line to reduce AC to 115V= 300W heating power. That would create a pulsing effect, like bang-bang mode.
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 12, 2018 02:36PM |
Registered: 6 years ago Posts: 93 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 15, 2018 01:07PM |
Registered: 9 years ago Posts: 94 |
Quote
Diggrr
is enclosed (and ventilated outside) for exotics
Quote
dc42
with a thin aluminium heat spreader
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 15, 2018 02:13PM |
Registered: 11 years ago Posts: 5,780 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 15, 2018 09:17PM |
Registered: 6 years ago Posts: 93 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 21, 2018 05:36AM |
Registered: 9 years ago Posts: 94 |
Quote
the_digital_dentist
why not just use 110V line input for it and skip the transformator
Quote
the_digital_dentist
put a rectifier in series with the heater and run it from 230V
Quote
Diggrr
I got rid of heavy bed artifacts by switching to dual 9mm wide GT2 belts.
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 21, 2018 06:31AM |
Registered: 10 years ago Posts: 14,672 |
Quote
mardy3d
What do you mean by the 110V line? In the country I live in (Germany), there is no 110V line according to my best knowledge.
Quote
mardy3d
Do you might know of a good rectifier that serves my desired purpose? I looked it up on eBay but I am not sure if I found the device you mean.
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 21, 2018 08:30AM |
Registered: 11 years ago Posts: 5,780 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 28, 2018 02:31AM |
Registered: 9 years ago Posts: 94 |
Quote
dc42
Something like [www.ebay.de] or [www.ebay.de]. It will get quite hot, so make sure that air can circulate around it.
Quote
the_digital_dentist
You might want to think about replacing it with metal
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 28, 2018 10:53AM |
Registered: 11 years ago Posts: 5,780 |
Re: Measured heatbed heat up times at 12V and 230V - how to speed it up? July 31, 2018 09:07AM |
Registered: 9 years ago Posts: 94 |