Electronics Forum | Fri Jun 14 00:47:17 EDT 2013 | mun4o
Thanks , Reese.Yes , I check the capacitors with C-meter.When measured with C-meter , all capacitors are OK - +/-10% of the value. I can not underst?nd "Note: This is not a summation). Y5V -- -20% of nominal value, -part tolerance, -machine toleranc
Electronics Forum | Tue Sep 01 11:12:18 EDT 2015 | zombee
Problem is solved! There wasn't voltage on motor inputs (only 5-10V AC) when the motor connected correctly, but was ~210V AC without motor. Firstly, I exchanged the motor speed control relay (Panasonic G-series type), but the result was same. (the a
Electronics Forum | Thu Jul 05 14:00:21 EDT 2007 | wayne123
we have recently been having trouble with our PPS capacitors on a couple of our boards. these boards are RoHs and the Parts are RoHs compliant. these boards first run through our reflow then a batch washer some through-hole parts are placed and then
Electronics Forum | Tue Nov 04 15:17:52 EST 2008 | iziris
This is my first circuit board that I am attempting to build and need a little help. Not exactly sure what is going on but maybe one of you guys could give some input. I am attaching the electrical diagram I am using. Everything thing seems to be wor
Electronics Forum | Wed Sep 22 03:23:40 EDT 1999 | Jeanjean
Dear all, First, I'd like to thank every one of you who have been a great help for my last questions. Then, I have heard that in multilayer ceramic capacitors, each layer of ceramic was about 3 micrometers at least. When adding the layer (which I d
Electronics Forum | Tue Oct 11 04:08:23 EDT 2005 | Rob
Hi Nuez, We've run a number of different brands of SMT Elco's through a number of leadfree temperature profiles, and consistantly the best performers were Elna & a very similar own brand product (not listing here as it was one from a sister company
Electronics Forum | Fri Dec 09 05:03:35 EST 2005 | rlackey
Hi, I'd be inclined to go with the through hole capacitor, as to surface mount it you would probably need to go for an elco (ceramics & films don't do that value in that voltage, & you'd be hard pressed to get a tant in that voltage). SMD Elcos a
Electronics Forum | Tue Oct 10 11:06:04 EDT 2006 | lheiss
Hi All, I wasn't sure how this would turn out until I ran some production. As I suspected, after every nozzle change the machine dumps the first 3 pickups, checks the nozzle height again (function 30?) and then begins placing with correction with n
Electronics Forum | Fri Jun 18 15:37:44 EDT 2010 | remullis
One thing I have run into when placing cap's flush to the board is blow holes due to the plastic sheathing used around the cap. It would form a gasket going through wave and exhaust out of the holes therefore blowing the solder out with it. This cap
Electronics Forum | Fri Jun 14 13:43:02 EDT 2013 | rway
The low value will be 0.624uF. You have to factor it from the low tolerance (-10%). So: 0.9 x 0.92 (machine tolerance) x 0.91 x 0.91 x 0.91 (3 decade aging factor for X7R dielectric). We factor hours at the 3rd decade (10,000 hours), but you can
