Test Equipment.... The missing link

Started by Harry D in sci.electronics.design23 minutes ago 30 replies

Having spent over 50 years in electronic labs, designing and testing, I find myself trying to test zener diodes, FETs, LEDs, transistors and...

Having spent over 50 years in electronic labs, designing and testing, I find myself trying to test zener diodes, FETs, LEDs, transistors and many other semiconductor devices. I end up kluging parts to generate a current source with enough voltage compliance to suit my needs. After searching Amazon, eBay and most test equipment vendors, I find a lot of units but none that fit my needs. So...


Another whiney POS...

Started by Jim Thompson in sci.electronics.design43 minutes ago 8 replies

Another whiney POS... ...Jim Thompson -- | James E.Thompson ...

Another whiney POS... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voic


Circuits Challenge For Non-Morons

Started by Anonymous in sci.electronics.design48 minutes ago 66 replies

aka idiot proof automotive jumper cables Electronics interposed between jumper cable clamps that automatically switches the correct polarity...

aka idiot proof automotive jumper cables Electronics interposed between jumper cable clamps that automatically switches the correct polarity regardless of battery terminal attachment of clamps. Must recover from/ survive full short circuit overload on heavy duty batteries. Circuit requires no intervention from user other than clamp attachment. There is at least one product on the


impossible stud

Started by John Larkin in sci.electronics.design1 hour ago 44 replies

I want a lot of these: https://www.dropbox.com/s/dmj4vff7mnldrcs/Impossible_Stud.JPG?raw=1 It probably doesn't exist. Maybe a Swiss screw...

I want a lot of these: https://www.dropbox.com/s/dmj4vff7mnldrcs/Impossible_Stud.JPG?raw=1 It probably doesn't exist. Maybe a Swiss screw machine company could make us a bucket full of these. Six of these would press into a small PCB, which could then be bolted onto the bottom of a bigger PCB. -- John Larkin Highland Technology, Inc lunatic fringe electronics


great eagle migration of 2018

Started by Jamie M in sci.electronics.design1 hour ago 5 replies

Hi, Will it occur? I mean eagle cad to kicad import of projects on a "massive" scale, not an invasion of canada from the U$A. cheers, Jamie

Hi, Will it occur? I mean eagle cad to kicad import of projects on a "massive" scale, not an invasion of canada from the U$A. cheers, Jamie


funny

Started by John Larkin in sci.electronics.design2 hours ago 42 replies

There have been two ants crawling around on the floor of our bathroom. Mo has named them Lewis and Clark. -- John Larkin ...

There have been two ants crawling around on the floor of our bathroom. Mo has named them Lewis and Clark. -- John Larkin Highland Technology, Inc lunatic fringe electronics


How to send commands to ELM327 OBD interface

Started by powerampfreak in sci.electronics.design5 hours ago 23 replies

Hello! I'm looking for information how to send commands to the popular ELM327 OBD interface. I want to design a stand alone device that check...

Hello! I'm looking for information how to send commands to the popular ELM327 OBD interface. I want to design a stand alone device that check long term fuel trim values along with some other parameters. Is there a good guide somewhere how those commands are set up? Thanks in advance


Does position of the CM choke make a difference?

Started by amdx in sci.electronics.design8 hours ago 8 replies

I have two circuits designed by the same guy, One schematic has the CM choke before the regulator and the other the CM choke is after the...

I have two circuits designed by the same guy, One schematic has the CM choke before the regulator and the other the CM choke is after the regulator. I'm thinking why would you put something between ground and your filter caps not even to mention the return pin off the regulator. Am I wrong? See the schematics here, area of interest is surrounded in red. > https://www.dropbox.com/s/dx0


Moving Eudora to a New Machine

Started by Anonymous in sci.electronics.design15 hours ago 8 replies

My Win 8 machine is having convulsions and I figured it is time to get a new one. I'm moving Eudora over to a Win 10 machine and I am...

My Win 8 machine is having convulsions and I figured it is time to get a new one. I'm moving Eudora over to a Win 10 machine and I am getting a strange error message, "Can't start Eudora the first time with attachments Please start Eudora by double clicking the icon or by the command line" I'm not even sure what this means. What attachments are there for Eudora


Yet another new laptop

Started by Anonymous in sci.electronics.design15 hours ago 61 replies

I had to buy a new laptop a few weeks ago when the Lenovo finally crapped out (what a POS!) I picked up an HP Envy at Costco with Win 10 of...

I had to buy a new laptop a few weeks ago when the Lenovo finally crapped out (what a POS!) I picked up an HP Envy at Costco with Win 10 of course. First thing I did was disable the touch screen. Like nearly every other machine around I can't use the touch pad because it doesn't have separate buttons. So I have to plug in a mouse dongle which isn't too bad on this machine becaus


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