Electronics Forum: amp-500 circuit board (Page 5 of 128)

Moisture absorbtion in circuit boards

Electronics Forum | Tue May 28 22:06:09 EDT 2002 | arcandspark

Two hours at 125 C will do nothing. IPC's new spec is 48 hours at 125C, the old spec I use to use for years was 24 hours at 125C. I do not have all the spec in front of me but if you reduce the temp to around 60C it can take up to 48 days. We use to

Moisture absorbtion in circuit boards

Electronics Forum | Tue May 28 22:06:18 EDT 2002 | arcandspark

Two hours at 125 C will do nothing. IPC's new spec is 48 hours at 125C, the old spec I use to use for years was 24 hours at 125C. I do not have all the spec in front of me but if you reduce the temp to around 60C it can take up to 48 days. We use to

un-tested assembled circuit reject rates

Electronics Forum | Tue Dec 07 13:40:25 EST 1999 | Tim

The company I represent provides electronic manufacturing services. Some of my customers ask that we ship their boards "un-tested". By un-tested I mean we build them, visually inspect them and out they go. I find that on un-tested boards, it's not

Power problem on radio circuit

Electronics Forum | Fri Sep 13 13:26:34 EDT 2002 | dougt

If it's not blowing the fuse in the car then I guess it wasn't drawing a huge amount of current. Check the power wires going into the radio and look for something loose. My first guess is your loosing voltage across a bad connection somewhere and a

Power problem on radio circuit

Electronics Forum | Mon Sep 16 12:56:56 EDT 2002 | dragonslayr

simon- davef is on the right track. 1st year electronics courses teaches us that you should always check the power supply first. In this case, the power supply in question is not your power source but the regulated power within the unit. I suspect o

Seeking a "Unit Test" circuit board for testing a Pick & Place

Electronics Forum | Mon Oct 12 15:51:57 EDT 2015 | billthebuilder

I am looking to test our Pick and Place robot with a RLC circuit of various sized components and orientations. I figure this has been done before, so before making it my self I wanted to check if such a board was available. Also, if there's a circu

ESD Compliant - Air blow off to dry washed circuit board assemblies

Electronics Forum | Tue Apr 11 17:45:02 EDT 2000 | Ashok Dhawan

I am looking for an appropriate method to dry wave soldered boards. While board assemblies are passed through board cleaning station , they are not fully dry . We do not want to heat above 180 deg F to dry them completely. We think that air drying u

Re: Permanent Marking Ink for ID# on PCB while circuit board is being built on Flowline

Electronics Forum | Fri Jul 07 11:06:44 EDT 2000 | John O'Brien

You ought to consider Data Matrix directly marked on the boards It can be done with laser, inkjet, or other permanent marking methods. Never falls off, can be read even if 30% is obliterated. For an example, check any AMD (K6, K7) or Intel Pentium c

Permanent Marking Ink for ID# on PCB while circuit board is being built on Flowline

Electronics Forum | Mon Jul 03 14:47:35 EDT 2000 | Ashok Dhawan

In a typical flowline assembly of circuit boards, what are the different methods used for tracking WIP ? I can think of : 1. travel cards - not suitable for panelised boards 2. Marking ID# on board at various operations while board is being built.

Re: Permanent Marking Ink for ID# on PCB while circuit board is being built on Flowline

Electronics Forum | Mon Jul 03 17:12:49 EDT 2000 | Ramon I Garcia C

Hi!!! I think, you should visit www.enthone.com this it's the internet place of an inks company named Polyclad Technologies. I hope this information can help you...


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