Re: The best way to drive a heating element?
Would you happen to know or have at the ready ... a schematic for a circuit like that?...
EasyGoing1
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Last Activity: 02-08-2023, 10:50 AM
Joined: 09-25-2016
Location: Victorville, CA
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Re: The best way to drive a heating element?
eccerr0r - just an FYI, I added you to my ignore list. I should have done that a long time ago. I cant see any of your posts anymore so don't bother with me anymore please.Leave a comment:
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Re: The best way to drive a heating element?
That's tempting at that price. I already got the IRL7833PBF's ... just a few bucks for a 10 pack on Amazon. If it doesn't work out, I'll definitely use one of those boards. Looks like a fairly simple circuit.....Leave a comment:
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Re: The best way to drive a heating element?
There was nothing hostile in my last response to you so I don't know where all this aggression is coming from. And concerning that UPnP comment from that other person, he was splitting hairs... type case doesn't make any difference unless you have OCD.
You can point out my mistakes all you want, I'll just ignore you from now on. Your criticism doesn't help me at all....Leave a comment:
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Re: The best way to drive a heating element?
I agree, momaka's response was amazing and it was the post that turned me in the right direction with this circuit.
This is why I ask questions in here. All of you regular posters on this site are far more advanced in your knowledge of electronics than I will ever be.
I actually attempted to make a batter tester myself. I looked up the algorithms and understood them in concept, but when it came time to implement them in a microcontroller, the numbers just didn't turn out right...Last edited by EasyGoing1; 02-01-2023, 03:34 PM.Leave a comment:
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Re: Question about a MOSFET driver
[FONT="Tahoma"][COLOR="Blue"][SIZE="5"]This thread was moved [URL="https://www.badcaps.net/forum/showthread.php?t=114874"]to this thread[/URL]. I thought I posted in here somewhere that I was starting a new thread about this but I don't see that post. My apologies about that.[/SIZE][/COLOR][/FONT]Re: Question about a MOSFET driver
[FONT="Tahoma"][COLOR="Blue"][SIZE="5"]This thread was moved [URL="https://www.badcaps.net/forum/showthread.php?t=114874"]toLeave a comment:
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Re: The best way to drive a heating element?
I might have asked questions in the past about using a mosfet in a PWM situation, but as I sit here and think about the circuits that I've actually created into something that I've used, I can think of a couple where I used MOSFETs to drive small motors several years ago and I don't remember heat being an issue with any of those. All of the LED circuits I've created had ZERO mosfets driving them. My last LED circuit was the ring LED replacement for my magnifying lamp and I ended up using an off the shelf PWM dimmer for that circuit....Last edited by EasyGoing1; 02-01-2023, 03:10 PM.Leave a comment:
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Re: UPNP, "Standards" and hardware that implements it
What is your point then? What damage is done by using upnp vs UPnP vs uPnp or any variation thereof?...Leave a comment:
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Re: UPNP, "Standards" and hardware that implements it
If the service in the firewall was written to the published standard, the router won't accept a port mapping to any IP address other than the requesting IP address.
Im not sure what you mean by "spoofing", but if you're suggesting that someone from the Internet could somehow create a port map without first obtaining access to a machine in the private network, then whoever designed that firewall / router should be publically flogged because there is no path to that service from...Leave a comment:
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Re: The best way to drive a heating element?
I have no circuits like this one that I have built in the past.
And since this thread is ongoing, your hopes in that regard are obviously without fulfillment, so I don't see the point.
I don't make posts here for entertainment value, if I have a question that I don't know the answer to I prefer posting it here because I find the feedback and answers to be valuable. Your constant criticism is of no help at all.
I am kindly asking that you stop doing this.
From...Leave a comment:
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Re: The best way to drive a heating element?
What is your goal when you constantly remind me of what was said in past posts? What is the value-add in such statements to THIS thread? Because it comes off as condescending and I don't like being talked to like a child. Perhaps you should just avoid my posts altogether because other than feeding your ego, I see no relevance to such statements in the context of this thread or any thread I might start in the future....Leave a comment:
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Re: The best way to drive a heating element?
It's a 5 volt MC so output on that pin is most likely somewhere between 4.5 and 5. The MOSFET is rated to be fully on at 4.5V.
Yeah, that's what I got from momaka's reply when he explained how PID generally works.
Your initial statements where you pointed out that the MC is CMOS and likewise has its own MOSFETS ... was that meant to be relevant to my last schematic in terms of turning the heating element MOSFET on and off using the configuration in that schematic? Or were you just pointing...Leave a comment:
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Re: The best way to drive a heating element?
The original thought as to driving the MOSET directly from the MC was when I thought it was a good idea to vary the current going to the heating element. But now that the element will be either always ON or always OFF based on a duty cycle to keep the temperature steady, adding the transistor after the MC was just to switch the MOSFET on and off thinking it would be better to do that through a transistor.
But perhaps my thinking on that was incorrect... where this might be a better option?
...Leave a comment:
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Re: The best way to drive a heating element?
Looks like I can get the IRL7833 [URL="https://www.amazon.com/Bridgold-IRL7833PBF-IRL7833-N-Channel-Transistor/dp/B07W5WRFFL"]on amazon[/URL] and it has a logic level on voltage and an Rds of 3.8mΩ
Perhaps this would work?
Re: The best way to drive a heating element?
Looks like I can get the IRL7833 [URL="https://www.amazon.com/Bridgold-IRL7833PBF-IRL7833-N-Channel-Transistor/dp/B07W5WRFFL"]on amazon[/URL] and it has a logic level on voltage...Leave a comment:
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Re: The best way to drive a heating element?
[FONT="Verdana"][SIZE="4"][COLOR="Blue"]First off, I'd like to say THANK YOU for this response. I know this took a long time to write and I very much appreciate that. [/COLOR][/SIZE][/FONT]
I did go into the drawing yesterday and take some measurements.
Size: 100mm x 50mm
Trace: 1 continuous on both sides of the board for a total length of 5100mm at 1.2mm wide
Using a value of 35µm for trace thickness, the resistance calcs out to 2.19 ohms...Last edited by EasyGoing1; 01-31-2023, 07:31 PM.Leave a comment:
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Re: The best way to drive a heating element?
I'll post the final circuit I decided on when I get the PCB ordered.Leave a comment:
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Re: The best way to drive a heating element?
Here ... you see this drawing ... this is literally the equivalent in my mind of the image I posted when I started this thread ... I didn't come in here and say "Hey check out this exact perfect schematic I designed ... isn't it great? ... cause if I said that, then you would be entitled to criticize it ... but when I'm giving you the equivalent of this drawing right here and saying I know this isn't a working circuit and Im here to find out what will work ... then you criticizing me is you being an asshole.
...Leave a comment:
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Re: The best way to drive a heating element?
[SIZE="5"][FONT="Verdana"][COLOR="Blue"]By the way, I measured out the trace on the PCB heating element that Im going to order for this and the estimated resistance of that element is just over 2 ohms if that matters to anyone.[/COLOR][/FONT][/SIZE]Re: The best way to drive a heating element?
[SIZE="5"][FONT="Verdana"][COLOR="Blue"]By the way, I measured out the trace on the PCB heating element that Im going to order for this and the estimated resistance of thatLeave a comment:
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Re: The best way to drive a heating element?
Yeah that would make the Arduino code ... ummmm ... "interesting" ... the mosfet is attached to the heating element and adding to the heat that the element is getting from the mosfet ... the code wont be an on / off situation and tracking gradual thermal changes in a setup like this is proving to be a worthy challenge for the arduino code because when you cut off the current going into the element, the temp doesn't just stop where its at ... it keeps rising ... and so when it crosses the boundaries you want that...Leave a comment:
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Re: The best way to drive a heating element?
So then a power transistor is the better choice? Like a TIP120?
Ahhh but this is where you're missing the whole point ... it's not really all about the lizard having a warm piece of printed plastic to chill out on ... its about the process of figuring out the project ... writing the code ... getting the PCB ... putting it together ... and having it sit there keeping a lizard warm. Anyone could buy an off-the-shelf solution ... but not everyone can make one and have the satisfaction of making it.
...Leave a comment:
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