I might try some ways to reduce the oxide but honestly it doesn't really matter to me. I'll probably just grind anything I want down smooth. The secret for this being real easy for me on this build is how I've tuned the circuit with the crucible in it. If I were to take the crucible out I would have to retune it to actually run properly heating up any metals. The presence of the graphite is making all the difference. It runs several khz or more above the best resonance without the crucible. I take the crucible out and it draws hardly anything because it goes way out of resonance.
@@highdesertdrew Yea I'd wager this approach has diminishing returns when filling a crucible to the max capacity but anything under a pound seems to melt easily. Downside is my crucible is basically toast now after one more run which was less than 10 total with a few of them being well under 2000F.
@@acex727 at higher powers those are probably getting it done faster, whereas this will still do it but it takes some minutes. You can buy small heaters online that will also do it at like 1400W but takes up to an hour for large amounts of metal.
Here is one I found on the internet which seems to work well. oshwlab.com/kevindk9/pll-induction-heater Also check out Brian's (SciTubeHD) write up on his builds. teslascience.wordpress.com/how-to-make-a-solar-powered-induction-cooktop/autotuning-induction-heater-circuit-tested/tuneable-high-power-igbt-induction-heater/ I don't really want to recommend anything in particular because I'm still playing with mine.. but I've had decent luck just running the thing fixed frequency.. Being able to tune the power is what you'll ultimately want and I haven't decided on the best approach. Currently I just use a pot to tune it some degree above the highest resonance in order to decrease the power. As for driving the switches it really depends on what switches you go with. If you decide to use brick modules which likely have large gate charges you'll want to make sure your gate drive stage is powerful enough. I recommend just using a couple IXDD614CI's to drive a GDT. You just need to invert the input signal to one of them. I just use a 74HC14 hex inverter and feed one inverted and one non inverted output to the drivers. From there you just need to create an oscillator that can feed squares into the hex inverter through whatever frequency range you'd like or need per LC.
nice just gotta solder that capacitor to the toob :) actually i wonder if you could just clamp some cheap amazon water cooling blocks to it, would be a cheap way to get lots of surface area on it and cool it.
i don't really see a capacitor of that size having temperature problems. But if it does, mounting it to the massive metal chassis is always a decent cooling option
So though think that calling people dreadful things has no impact on them and you lack awarenss of the damage ot can do to a person have you verbally bullied anyone
@@sharnadixon-scott710 I can't help the mental sanity of others. For example clearly you're insane and I can't help that. I don't have to say anything rude to you for you to consider it bullying. Again this is simply because you're insane and that's not my fault.
@@Magneticitistit's okay you lack the emotional intelligence to understand that the terrible things you say can have an impact on others. It's a shame that you have probably bullied someone and not even realised it since you think calling people terrible names isn't harmful at all. Oh and I thought I had out this on the discussion page where you were denying that bullying happens
@@sharnadixon-scott710 no that's not what I said ever you just decided to not read it. What I said in a completely different video was that harsh words are not called for but they are expected in this world and sometimes you have to put on your grown up pants. Words do not actually cause death. The emotional reception a human being has to those words is what can cause death. Luckily for us everyone who came before us didn't allow simple words to emotionally destroy them otherwise we wouldn't be here today.
That's awesome, ime its though to get copper to melt this way. Since you're using an inductor you can use inert gas to avoid the oxide build up
I might try some ways to reduce the oxide but honestly it doesn't really matter to me. I'll probably just grind anything I want down smooth.
The secret for this being real easy for me on this build is how I've tuned the circuit with the crucible in it. If I were to take the crucible out I would have to retune it to actually run properly heating up any metals. The presence of the graphite is making all the difference. It runs several khz or more above the best resonance without the crucible. I take the crucible out and it draws hardly anything because it goes way out of resonance.
@@Magneticitist so you're melting the metal by inducing current in the crucible. Good idea.
@@highdesertdrew Yea I'd wager this approach has diminishing returns when filling a crucible to the max capacity but anything under a pound seems to melt easily. Downside is my crucible is basically toast now after one more run which was less than 10 total with a few of them being well under 2000F.
How much power does it need💀
Less than a common space heater
@@Magneticitist1kwh?
@@acex727 yea, if u run it for an hour lol
@@Magneticitist No is it only 1kw? I have seen many like this but those are like...2200w,
@@acex727 at higher powers those are probably getting it done faster, whereas this will still do it but it takes some minutes. You can buy small heaters online that will also do it at like 1400W but takes up to an hour for large amounts of metal.
do you have sources or schematics for the gate driver control circuit?
Here is one I found on the internet which seems to work well. oshwlab.com/kevindk9/pll-induction-heater
Also check out Brian's (SciTubeHD) write up on his builds. teslascience.wordpress.com/how-to-make-a-solar-powered-induction-cooktop/autotuning-induction-heater-circuit-tested/tuneable-high-power-igbt-induction-heater/
I don't really want to recommend anything in particular because I'm still playing with mine.. but I've had decent luck just running the thing fixed frequency.. Being able to tune the power is what you'll ultimately want and I haven't decided on the best approach. Currently I just use a pot to tune it some degree above the highest resonance in order to decrease the power.
As for driving the switches it really depends on what switches you go with. If you decide to use brick modules which likely have large gate charges you'll want to make sure your gate drive stage is powerful enough. I recommend just using a couple IXDD614CI's to drive a GDT. You just need to invert the input signal to one of them. I just use a 74HC14 hex inverter and feed one inverted and one non inverted output to the drivers. From there you just need to create an oscillator that can feed squares into the hex inverter through whatever frequency range you'd like or need per LC.
nice
just gotta solder that capacitor to the toob :)
actually i wonder if you could just clamp some cheap amazon water cooling blocks to it, would be a cheap way to get lots of surface area on it and cool it.
@@BoredHighVoltage it is soldered on there I just cut thin copper sheets to solder to the pipes and then screw those down to the capacitor
i don't really see a capacitor of that size having temperature problems. But if it does, mounting it to the massive metal chassis is always a decent cooling option
@@BoredHighVoltage Water cooling is really the only way with these given how hot the coil gets
@@Magneticitist i was joking but if that capacitor is getting that hot i'd feel scammed.
@@BoredHighVoltage Nearly any capacitor passing hundreds of amps continuously will get hot but water cooling is just the most effective way around it.
After google u might need nuclear energy for electricity
So though think that calling people dreadful things has no impact on them and you lack awarenss of the damage ot can do to a person have you verbally bullied anyone
@@sharnadixon-scott710 I can't help the mental sanity of others. For example clearly you're insane and I can't help that. I don't have to say anything rude to you for you to consider it bullying. Again this is simply because you're insane and that's not my fault.
@@Magneticitistit's okay you lack the emotional intelligence to understand that the terrible things you say can have an impact on others. It's a shame that you have probably bullied someone and not even realised it since you think calling people terrible names isn't harmful at all. Oh and I thought I had out this on the discussion page where you were denying that bullying happens
@@sharnadixon-scott710 no that's not what I said ever you just decided to not read it. What I said in a completely different video was that harsh words are not called for but they are expected in this world and sometimes you have to put on your grown up pants. Words do not actually cause death. The emotional reception a human being has to those words is what can cause death. Luckily for us everyone who came before us didn't allow simple words to emotionally destroy them otherwise we wouldn't be here today.