Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-31-2020, 12:39 AM
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Replies: 15
Views: 3,441
Re: Koban - Current Clamp Meter - DMM
From the above datasheet, page 11:
4. Noise at the power supply may cause a malfunction of the watchdog operation or the circuit.
In such case, please strength the line between VIN and the GND pin...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-26-2020, 12:06 AM
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Replies: 15
Views: 3,441
Re: Koban - Current Clamp Meter - DMM
See datasheet here (https://www.torex.co.jp/file/xc6116/XC6101-XC6102-XC6103-XC6104-XC6105-XC6111-XC6112-XC6113-XC6114-XC6115-XC6116-XC6117-j.pdf).
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-24-2020, 10:52 PM
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Replies: 15
Views: 3,441
Re: Koban - Current Clamp Meter - DMM
Some thoughts:
U3 is an IC, see the attached image taken from the datasheet.
Follow the 5 pins traces back to the connected points and test if it`s working.
Q5 is most likely a transistor....
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-22-2020, 10:49 PM
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Replies: 15
Views: 3,441
Re: Koban - Current Clamp Meter - DMM
A long list of chips, schematics, teardown, ... info on Multimeters (DMM):
http://improwis.com/projects/reveng_multimeters/
You can find a long list of devices using the CS7721CN chip along with...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-20-2020, 02:58 PM
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Replies: 15
Views: 3,441
Re: Koban - Current Clamp Meter - DMM
@neuron (https://www.badcaps.net/forum/member.php?u=74356)
stj is most likely right! A simple quick search returns:
Part No.: XC6116H028MR, SmdCode: CHX, Manufacturer: Torex...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
11-14-2020, 04:24 PM
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Replies: 12
Views: 744
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
10-21-2020, 03:09 PM
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Replies: 6
Views: 851
Re: Protek 506 DMM Problem/Fault
:rolleyes: ... let's hope replacing the MAX134 will fix it.
In the mean time you can go thru the calibration procedure to check if all trimmers (VRx) are set to the correct value.
Found the...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
10-20-2020, 03:25 PM
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Replies: 6
Views: 851
Re: Protek 506 DMM Problem/Fault
If pin 25 measures 2.95V then pins 26 to 28 should not read 0V since they're connected thru RN1 to a common point.
Take RN1 out and check if it's the MAX134 that is (wrongly) pulling that pins to...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
10-18-2020, 03:21 PM
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Replies: 6
Views: 851
Re: Protek 506 DMM Problem/Fault
The 1st thing i've noticed was a discrepancy in pin layout between the datasheet & the schematic.
Reading the datasheet "Ohms and diode measurement" section gives some hints on what voltage to...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
08-23-2020, 11:33 PM
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Replies: 3
Views: 651
Re: Wire twisting tool for small wires - ideas ?
You've got it almost right...
But to be able maintain tension the wires must be inserted thru the holes but then remain outside the tube.
Depending on the tool, not hole edge stripping, you may use...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
08-18-2020, 08:56 PM
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Replies: 13
Views: 1,180
Re: My Andonstar ADSM201 Microscope Review
Bare in mind ADSM302 max. video output resolution is 1080P Full HD (via HDMI), or 720P (via PC), @30fps max. Therefore you won't take any advantage hooking it up to a 4K TV set.
But nowadays 40"...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
07-13-2020, 03:33 PM
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Replies: 129
Views: 7,858
Re: DPS5020 dual power supply build
Short answer: Yes
Long answer:
But has said before you´ll have to draw a line where you want to stop the increase in complexity and cost vs. the ripple output noise.
IMO in a typical "all...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
07-03-2020, 08:50 PM
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Replies: 129
Views: 7,858
Re: DPS5020 dual power supply build
Seen the videos and ripple measurements.
IMO, taken in consideration the specs (and price!) the ripple results fall within the advertised 100mV typical, reaching 150mV @ maximum current output...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
06-09-2020, 07:18 PM
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Replies: 129
Views: 7,858
Re: DPS5020 dual power supply build
At least it's an isolated housing... well exception made to the screws that go through it :violin:
(Just joking, don't take my comment to serious:D)
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
05-10-2020, 06:59 PM
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Replies: 129
Views: 7,858
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
03-27-2020, 03:46 PM
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Replies: 49
Views: 9,067
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
03-25-2020, 07:17 PM
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Replies: 49
Views: 9,067
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-27-2019, 05:34 PM
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Replies: 19
Views: 1,259
Re: Old programmer
For those i've always used the Labtool-48UXP without any problems whatsoever (any GAL/PAL brand).
(Bargain from someone who didn't really what to bother with LPT port)
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-05-2019, 03:38 PM
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Replies: 31
Views: 1,928
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
12-05-2019, 03:16 PM
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Replies: 129
Views: 7,858
Re: DPS5020 dual power supply build
I’m not aware of the electric regulation on Canada.
Nevertheless, it’s a common mistake wrong labeling and interpretation about Earth connection.
While the Line is sometimes referred as Hot...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
11-23-2019, 09:20 PM
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Replies: 13
Views: 940
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
11-22-2019, 05:49 PM
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Replies: 13
Views: 940
Re: Solder fume extractor - recommendations?
DIY is the way to go...!
Can't imagine shopping mall without a ventilation system...
Possibly it has been removed (or uninstalled) previously. Having a cafe next door they ought to have...
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
11-13-2019, 04:12 PM
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Replies: 17
Views: 1,266
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
11-11-2019, 03:11 PM
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Replies: 17
Views: 1,266
Re: New Tiny Pad Installation
imo some QFN allow it to be done... or at least trimmed from backwards to the side (see picture attached to this post (https://www.badcaps.net/forum/showpost.php?p=924762&postcount=12))
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Forum: Equipment Usage, Soldering, Techniques, and Reviews
11-09-2019, 07:31 PM
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Replies: 17
Views: 1,266
Re: New Tiny Pad Installation
Sure, that's why i mentioned "bend".
Most low count I/O QFN ICs usually allow the pads to be bent outwards the package (from backwards to the side).
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