Electronics Forum | Fri May 11 10:48:51 EDT 2007 | Rob
Hi Lupo, Are you talking about laser trimming the current limiting resistors in front of the LEDs, whilst dynamically measuring their output to get set light levels? If so then you need a laser trimmer & a very good photodiode/comparator feedback l
Electronics Forum | Thu Sep 14 06:18:00 EDT 2023 | deniseburton
Hello, mcdvoice It seems like your Juki RS-1R machine's laser height calibration may be off. When measuring a 0402 resistor, it consistently reports heights around -0.60 to -0.70, causing pickup issues during production. Manually adjusting it to -
Electronics Forum | Wed Sep 13 12:50:44 EDT 2023 | kirill
Greetings, I would like to do a height calibration, because the laser of the machine seems to be out of control, I'll explain why: When I measure the height of a 0402 resistor, I get around -0.60 to -0.70, when I fix it on what the machines has measu
Electronics Forum | Tue Mar 20 22:53:16 EDT 2018 | maustin
OK, with my masterful powers of deduction, I have been able to resolve the problem. Upon further investigation, it became apparent that the issue was restricted to those components that had the laser alignment level in the component data set to -0.2
Electronics Forum | Tue Mar 13 19:27:33 EDT 2018 | maustin
I have an old Zevatech 740 machine that, until recently, was running well. In the last few weeks, the RH head has started giving me issues. When it picks up a component (and early on in most of my programs it will be picking up chip resistors or ca
Electronics Forum | Tue Jan 30 21:15:51 EST 2001 | davef
You seem to pretty far from shore to begin thinking about boats and floatation devices. Most laser trimmers are used by: * Semiconductor fabricators * Resistive component fabricators * Hybrid circuit assemblers Component fabricators and hybrid [
Electronics Forum | Tue Jan 30 11:14:25 EST 2001 | svenson
I have an idea of trimming the resistors on a teflon PCB (FR4) after mounting and soldering. Can I use a laser to cut on a smt mounted resistor while the PCB is in functional test? The goal is to balance the resistances for a telecom application. Ha
Electronics Forum | Tue Sep 19 18:06:05 EDT 2006 | lheiss
Does anyone know of a source for better documentation for the laser align settings? I managed to get a 1206 ceramic capacitor to measure and was working on a 1206 resistor and couldn't get it to succeed. I retried the cap and it failed again and ag
Electronics Forum | Wed Nov 09 17:22:06 EST 2022 | emeto
1. For laser machines, there should be setting for Z - at what level you should cut measure the part in Z axis. 2. Check all calibrations are in place and passing 3. Check resistor package setup in the software - all dimensions
Electronics Forum | Tue Nov 08 22:49:41 EST 2022 | jojoled
Hi, I need help with placing 0402 resistors 90% of them are picked correctly, but are not placed(thrown away) giving me error : LASER retry over. Slightly higher varistors in same package have slightly better placing rate, about 50%, but still not su
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