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Author Topic: looking for t2117 equivalent  (Read 595 times)
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sphinx
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« on: July 11, 2016, 03:48:21 03:48 »

hi

i am looking for a replacement for t2117 it is a  Zero-Voltage Switch with Adjustable Ramp i have ducked and google it but without
any luck. the use is as a temperature controller for soldering iron. Maybe someone else know anything about this. i attached schematics
to look at.

/mike
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PICker
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« Reply #1 on: July 11, 2016, 06:38:47 06:38 »

Did you try the U217B IC?
http://pdf.datasheetcatalog.com/datasheet/Temic/mXyzutqx.pdf
I don't know it is still in production but you can find it on Ebay:
http://www.ebay.com/itm/U217B-Zero-Voltage-Switch-with-Adjustable-Ramp-IC-/331806014844
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sphinx
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« Reply #2 on: July 11, 2016, 04:47:57 16:47 »

i am firstly looking for a in production chip since u217b is not in production anymore either i have found t2117 in some shop
but its somewhat expensive and not in production anymore so at first i would like to see if i could find a chip thats a bit
cheaper and in production, if i cant find any i would consider to get an old chip.

/mike
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metal
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« Reply #3 on: July 11, 2016, 06:12:53 18:12 »

are you interested in a mcu-based solution? Basically, AVR. Also take at this thread

BTW, you might find TCA785 usable, although discontinued in  13 Apr 2015, you should be able to find stock somewhere.

http://www.futurlec.com/Others/TCA785.shtml
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sphinx
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« Reply #4 on: July 11, 2016, 07:06:05 19:06 »

What i am looking for is to get a newer soldering station instead of my old homebuilt one which is an old
50 watt magnastat with a transformer. I would like one that has variable temp conrol and was looking to build
something to use with wxp80, wxp120, wxhap200 and similar tools from weller. Weller is expensive and i like the
tools they got, money is tight and i got time so i dont mind building a solution for this.

What i would want of it is to have variable temp control and a display of temperature, preferable thru hole i got loads
 of those components and i can make my own pcb's i got the things for this and the chemicals.
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« Reply #5 on: July 11, 2016, 07:42:58 19:42 »

I dont know if an IC like the Intersil ISL6753 (in production) can help you in the design.
You could have a look:
http://www.intersil.com/en/products/power-management/isolated-power/isolated-pwm-controllers/ISL6753.html
http://www.intersil.com/content/dam/Intersil/documents/isl6/isl6753.pdf
https://www.intersil.com/content/dam/Intersil/documents/an13/an1341.pdf
http://www.intersil.com/content/dam/Intersil/documents/an12/an1262.pdf
http://www.intersil.com/content/dam/Intersil/documents/an16/an1619.pdf
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metal
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« Reply #6 on: July 12, 2016, 12:43:00 12:43 »

man.. I am willing to do a similar thing. Do you have documents that describe how to power them, read the temperature? I can do it as well, but with an MCU which is more flexible and can sum all functions in one IC too.

I can port GLCD code done by xpress_embedo to STM32, I can also PWM and ADC with DMA as well, I just need to know which one to buy and how to control it. I can also do the PCB, no pb...
« Last Edit: July 12, 2016, 12:47:06 12:47 by metal » Logged

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sphinx
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« Reply #7 on: July 12, 2016, 03:05:00 15:05 »

The soldering equipment i am looking at is driven by 24VAC that's the only thing i know so far since i don't have the
soldering iron yet, so i haven't been able to see/measure the sensor output. i was looking at a similar projects, one that
uses a DC soldering iron from weller "platino" the other one is a universal controller. i added all into a collection you
you can download. you already know the password.

/mike
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« Reply #8 on: July 13, 2016, 02:36:56 02:36 »

i found another file i have collected for this sorta project it's a simpler relay controlled and internal sensor in soldering iron
i dont know much more than that
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« Reply #9 on: July 13, 2016, 09:34:30 21:34 »

Have a look to these interesting articles:
http://www.zl2pd.com/SolderingStation.html
https://www.eeweb.com/blog/extreme_circuits/temperature-controlled-soldering-iron
http://www.slideshare.net/tarzan1a/hakko-936-gorsak-952-diy-analog-soldering-station-schematic
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