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Re: Low heater voltage- how raise it up higher?
Posted: Fri 03/27/20 6:38 pm
by Bieworm
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Re: Low heater voltage- how raise it up higher?
Posted: Fri 03/27/20 6:40 pm
by Bieworm
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Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 4:42 am
by Bieworm
Looked it up. I used 1mm2 wire, which is diameter. 78mm, approx. the same as 20AWG
Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 6:25 am
by JMPGuitars
Bieworm wrote: ↑Sat 03/28/20 4:42 am
Looked it up. I used 1mm2 wire, which is diameter. 78mm, approx. the same as 20AWG
There should be writing on the side of the insulation that says what gauge it is.
Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 7:00 am
by Bieworm
JMPGuitars wrote: ↑Sat 03/28/20 6:25 am
Bieworm wrote: ↑Sat 03/28/20 4:42 am
Looked it up. I used 1mm2 wire, which is diameter. 78mm, approx. the same as 20AWG
There should be writing on the side of the insulation that says what gauge it is.
It's 1 square mm. So like 20 AWG, a little less. Somewhere between 20 and 22AWG.
Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 7:23 am
by JMPGuitars
Bieworm wrote: ↑Sat 03/28/20 7:00 am
It's 1 square mm. So like 20 AWG, a little less. Somewhere between 20 and 22AWG.
There's no hard-to-read writing on the insulation? 1mm is probably 18AWG. 0.8mm is more likely 20AWG. But this method isn't as reliable as reading the print on the insulation.
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Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 7:46 am
by Bieworm
JMPGuitars wrote: ↑Sat 03/28/20 7:23 am
Bieworm wrote: ↑Sat 03/28/20 7:00 am
It's 1 square mm. So like 20 AWG, a little less. Somewhere between 20 and 22AWG.
There's no hard-to-read writing on the insulation? 1mm is probably 18AWG. 0.8mm is more likely 20AWG. But this method isn't as reliable as reading the print on the insulation.
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I think you're wrong about this one. In Europe we express wire values in sections, meaning the surface of the wire diameter. In the USA the wire is expressed in diameter. Or do you guys mean 20AWG is the surface in square something?
It is doable though, both wires through the hole.
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I combined them like this for the pin 4 and 5 :
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Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 8:54 am
by JMPGuitars
Bieworm wrote: ↑Sat 03/28/20 7:46 am
I think you're wrong about this one. In Europe we express wire values in sections, meaning the surface of the wire diameter. In the USA the wire is expressed in diameter. Or do you guys mean 20AWG is the surface in square something?
I could be, but I dunno. I googled it and those were the numbers reported. I just measured a 20AWG pre-bonded wire and my digital caliper says 0.9mm, which seems consistent with non-bonded 20AWG wire being 0.8mm.
Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 10:36 am
by Bieworm
JMPGuitars wrote: ↑Sat 03/28/20 8:54 am
Bieworm wrote: ↑Sat 03/28/20 7:46 am
I think you're wrong about this one. In Europe we express wire values in sections, meaning the surface of the wire diameter. In the USA the wire is expressed in diameter. Or do you guys mean 20AWG is the surface in square something?
I could be, but I dunno. I googled it and those were the numbers reported. I just measured a 20AWG pre-bonded wire and my digital caliper says 0.9mm, which seems consistent with non-bonded 20AWG wire being 0.8mm.
Ah we'll see how it turns out.
Don't think the wire thickness with that little difference is of influence on the voltages at the heaters. And if it is, it's always an option to change them over to smaller types.
Re: Low heater voltage- how raise it up higher?
Posted: Sat 03/28/20 12:33 pm
by JMPGuitars
Bieworm wrote: ↑Sat 03/28/20 10:36 am
Ah we'll see how it turns out.
Don't think the wire thickness with that little difference is of influence on the voltages at the heaters. And if it is, it's always an option to change them over to smaller types.
Nothing to do with the voltage. You tested without the tubes, and voltage was insufficient anyway. The gauge part of this conversation is only about making it easier to wire the heaters. As long as the wire you use is rated for the voltage and current going through it, you're good.