Thinking_J

's profile
image
VP

Design products for many industries


Thinking_J

's contributions
  • 05.27.2010
  • What a cap-astrophe!
  • Reviewing much later, I wondered .. How much ROHS soldering temperatures (quite a bit higher than 60/40 solders).. increased the likeliness of this problem ? (creation of additional micro fractures within the pellet when exposed to even higher temps) Regardless.. a very clever solution to "clear" the micro fractures.
  • 04.01.2013
  • The best electronics-related April Fools' spoof ever?
  • A fairly regular practice among the techs.. on Apr 1st. They would re-wrap the outer coils on a the roll of solder with same diam bus wire. Would appear as the original roll of solder. Generally the joke was applied to the newest / youngest member of the group. Result: the poor targeted tech would try and try to solder to no avail. In one case.. burning (slightly) his own fingers... till he figured it out.
  • 03.17.2017
  • Are streaming sticks the present and future?
  • My biggest concern with cloud based DVRs.. is directly related to one of the primary values a "traditional" DVR provides.. a backlog of material to watch when the internet and live reception are "out". Which happens more often than my service providers would like to admit... (directv/cable internet.. both.. sometimes out for extended periods due to weather or maintenance) Can get a bit annoyed when forced to read a book (I like it to be MY idea) or lose the ability to watch Formula 1 live - often coinciding with the odd/late hours used for maintenance of my internet provider.
  • 02.13.2017
  • Make schematic symbols understandable
  • I would like to add: it is helpful - sometimes- to have your pot symbol to show the direction (CW/CCW) for the ends of the pot's rotational movement. AKA: label the terminals at each end of the resistance .. CW or CCW (not 1 or 3) If you want to be consistent.. label the wiper "W" .. though this should already be obvious.
  • 02.13.2017
  • Make schematic symbols understandable
  • All good points.. However, If my CAD system didn't provide for mirroring and rotating of any schematic symbol (or sections of a schematic) .. I would seriously consider "moving on" to another CAD system. Make each symbol in all of it's possible (likely to be used) orientations? yikes!!! That is soo...1980s :)
  • 02.13.2017
  • Make schematic symbols understandable
  • Paul, While I agree with most of your observations/concerns... I would like to make a few of my own. - Schematics are NOT preliminary pcb layout tools! They (like text based solutions) are never going to provide All the information required for a good pcb layout! So please people stop trying to make a schematic be EVERYTHING to the design. Just make symbol connection points being mindful of how they are most likely to be connected on a schematic (and yes, as suggested, if graphics are helpful - USE THEM) - When creating a schematic.. Your personal preferences, while important, are not the point.. it's purpose is to communicate the circuit's function to others that will be reading it. Namely technicians and other engineers. Granted if the schematic makes sense to you.. it will more likely make sense to others. The point: try to be mindful of the audience that will use the schematic. - while I agree that the signal paths should "flow" as much as possible (connectors broken up into smaller items)... sometimes the primary audience for a schematic will be the people involved in simply wiring it into a bigger system. With their only concern: the creation of the wiring loom (physical location without any concern for it's actual function) Often these situations call for a single schematic page (among the others) that simply shows all the external connections for the entire product, with ported signals to the schematic pages with appropriate "flow" of the signals within each of these pages. (with any appropriate notation) The one time where trying to communicate a physical location on the product.. makes sense. And please use appropriate naming conventions for signals. Most of us.. know a good schematic when we see it. Fewer (apparently).. know how to structure a schematic to convey it's function clearly.