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2017-01-05 by Rob
What is the purpose of the 0.15uF capacitor? I find the next size smaller shows it also in this picture: http://www.learnmorsecode.com/laminator/sync5.jpg On
2017-01-04 by keith printy
Since there appears to be a capacitor present the motor in the picture is wired correctly. If there were no capacitor it would not run. From:
2017-01-04 by Jim Pruitt
This should help also: http://www.fichier-pdf.fr/2012/01/15/wiring-diagram-of-synchronous-motor-60ktyz-1/wiring-diagram-of-synchronous-motor-60ktyz.pdf Looks
2017-01-04 by Rob
I revised the picture to show the connections.
2017-01-04 by Rob
Thanks Mike and Harvey. Thats the one. On 01/04/2017 11:25 AM, Harvey Altstadter hrconsult@cox.net
2017-01-04 by Harvey Altstadter
Rob, I think this is what you are looking for: https://www.youtube.com/watch?v=C11NeRSxPD4 Harvey
2017-01-04 by K5ESS
Check this out https://www.youtube.com/watch?v=C11NeRSxPD4 Mike N. From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: Wednesday,
2017-01-04 by Rob
What is the proper way to wire an AC 3 wire synchronous motor? There is a wire diagram on this picture but it does not help me.
2017-01-03 by Mog
Z -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
2017-01-02 by David C. Partridge
It’s the relay driving the heater (shown as a 12V lamp in the schematic). From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: 02
2017-01-02 by Howard Chester
What is the component labeled K1 1mH 400 ohm on the right side of this schematic? http://www.learnmorsecode.com/laminator/gbc/pp330.jpg As stated by other
2017-01-02 by Mark Lerman
Yes, a thermocouple is the proper sensor to use here, but a thermistor will work just fine. In fact, all of the laser printers I have taken apart in my
2017-01-02 by Edward Brown
K1 is a relay coil,the ohm and mh are the coils specs Sent from my iPad
2017-01-02 by David C. Partridge
Relay, the Bulb shown on the schematic is a stand in to the heaters From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: 02 January
2017-01-02 by keith printy
The transistor is being used as a diode. I’ve seen this on amplifiers to monitor the power transistors and adjust the bias so it don’t go into thermal
2017-01-02 by Rob
THANK YOU now that you call it a relay it makes sense there is the D7 1N4007 across it.
2017-01-02 by James
I would say it is a relay. The box is the coil which has 400 Ohm resistance and 1mH inductance I don t know why they specified the inductance of the coil, I
2017-01-02 by Rob
What is the component labeled K1 1mH 400 ohm on the right side of this schematic? http://www.learnmorsecode.com/laminator/gbc/pp330.jpg
2017-01-02 by David C. Partridge
And for clarification Pace/Vivid laminator uses a 1n4148 as temp sensor. Dave From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent:
2017-01-02 by Rob
Yesssss yes.... thermistor is where I started with all this... http://www.learnmorsecode.com/laminator/index.html
2017-01-02 by Mark Lerman
Why not just use a thermistor? It s made for that purpose, already calibrated, costs a dollar or so, is tiny snd rugged, and can be read with a simple
2017-01-01 by Harvey Altstadter
The other possibility would be an in line pre heater. In that case, the rollers wouldn t have to get so hot, as the board could be at or close to the fusing
2017-01-01 by Harvey Altstadter
It is unless you need to go to a higher temperature range. The metal can, TO-46 part only goes to 148.5°C. The other plastic packages are even lower. The
2017-01-01 by David C. Partridge
... My modified laminator runs up to 250C and even than needs multiple passes for a large 11” x 8” double sized 1.6mm PCB (thermal capacity of PCB too
2017-01-01 by alan00463@...
With all this talk of roller temperature and temperature control circuitry, does anybody have a clue as to the optimal roller temperature for a laminator ?
2017-01-01 by David C. Partridge
They work fine up to 250C no problem! Dave
2017-01-01 by me@...
A LM34DZ is a HELL of a lot more simple than trying to use a diode or transistor to measure temperature.
2017-01-01 by Harvey Altstadter
That will work just fine, but unless you use a transistor with a metal case, your upper temperature will be limited to 150°C, or possibly lower. If you use a
2017-01-01 by Rob
YES... there are temperature limits for all the components...... My interest here was in the shear fact that there did exist temperature measurement circuits
2017-01-01 by Cecil Bayona
... You do realize that diodes and transistors can not handle the temperatures involved while they have power. Most Silicon transistors can handle up to 100C
2017-01-01 by Rob
Wow all sorts of web sources explaining how to measure temp with diodes and transistors. https://youtu.be/fvjDWfRpdAI A transistor with two of three legs
2017-01-01 by Kevin Byrne
A transistor with two of three legs soldered together makes a temperature probe. Is the temperature inside of lam too hot? Google for temperature probe
2017-01-01 by keith printy
I have an old heathkit digital thermometer. It used 1n4149 diodes 2 of them in series to make the temp sensors . the voltage across the diodes changes with
2017-01-01 by Harvey Altstadter
Rob, It does, but the maximum operating temperature is 200°C for the 4148. With ~-2mV/°C tempco, it is difficult to build a controller that works well up to
2017-01-01 by Rob
Always learning something new here. 1N4148 + LM741 makes a temperature sensor On 01/01/2017 07:11 AM, David C. Partridge ... Always learning something new
2017-01-01 by Harvey Altstadter
Ancel, That makes sense. I am beginning to see why the laser printers I have looked at use heaters inside the rollers. Harvey
2017-01-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
2017-01-01 by mosaicmerc@...
... During development of the Apache PCB mod, I effectively slowed the rollers to a net zero movement. Before long the rollers area closest to the heaters
2017-01-01 by David C. Partridge
It’s a Vivid IP-330 described as having “hot roller” technology. I need to dig it out as I can’t remember what I did to increase the Temp range
2017-01-01 by Rob
Yea... the AL9 was a real mindbender..... having the two parrallel thermal switches and the shorting out of the indicator lights circuit. On 12/31/2016 07:35
2017-01-01 by Harvey Altstadter
Rob, It looks like it is similar to the Apache that you have, but it lacks the second thermoswitch mounted directly on the heater. I don t understand the
2016-12-31 by Malcolm Parker-Lisberg
Rob That first link is the same unit I am butchering, with Arduino PID temperature control and motor speed control. New gears and end plates under
2016-12-31 by Rob
thanks I had not seen that dimmer hack yet. Those pictures show the guts of the laminator. Looks a lot like my APACHE AL9
2016-12-31 by Harvey Altstadter
Rob, The Harbor Freight unit is concentric in the sense that the heat is provide from all around the roller assembly. It is not concentric with either
2016-12-31 by Harvey Altstadter
Ancel, I am not sure I understand why slowing the rollers causes them to pick up more heat energy. In my laminator (Harbor Freight) there are two heaters,
2016-12-31 by Rob
Really? This grabs my attention. What make and model? Can you take a picture and share? Is there an online parts list we can eyeball that shows how concentric
2016-12-31 by David C. Partridge
But, but the heaters are concentric with the rollers (or at least they are in my laminator) so stopped/forward/reverse should make no difference. Dave
2016-12-31 by AncelB
When a laminator s net roller speed is modified, you also modify the heat energy transfer to the rollers as the same surface of the roller sees more radiant
2016-12-31 by Harvey Altstadter
Thermocouples are made by welding two wires of different materials together. That s what makes the bead on the bead type. The other terminations are just
2016-12-31 by Rob
How HIGH is what you say is high heat conditions that weaken the soldered thermocouple ? Considering that some are rated at over 2,000 F degrees while others