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AVR, Prologix GPIB, PSOC, optics things for free/sale (USA only)
Hi - I am looking to get rid of various bits of electronics.   see here for images.   First off - an AVR Wear T-shirt. I got it for free here many years ago, but after a...
Sun. Aug 28, 2016 - 07:01 PM
Suggestions for a coax compression tool?
I figure there are a lot of RF folks on here so I thought I'd ask: has anybody had good luck with a specific compression tool? I need to make some RG-6 cables with F connectors on...
Tue. Sep 16, 2014 - 03:40 PM
re-compiling code took sleep I from 2.5ua to 120ua...
Hi - I built up a device a few years back that had a very low current sleep mode. I measured it at 2.5ua. It uses an ATMEGA168P. I recently made some changes to the code to track...
Wed. Nov 27, 2013 - 04:23 AM
32K crystal running slow...
Hi - I have an ATMEGA168PV-10AUR with an Abracon ABS25-32.768KHZ-6-1-T crystal attached. The crystal runs a bit slow - about 150 seconds/month slow without any capacitors on...
Tue. Nov 19, 2013 - 02:19 AM
FS: JTAG-ICE MKII, ATSTK526, Raven, and STK1000
I'm clearing out some extra AVR and AR32 stuff. Everything is functional. The JTAG-ICE MKII looks to have never been used, but I'm not positive. I have a second JTAG-ICE MKII (not...
Sun. Sep 15, 2013 - 08:28 PM
Looking for keyed card edge connector
Hi - I am trying to resurrect a Kepco BOP 100-1M power supply. Unfortunately, I've found that it is missing a part - they call it the "Kepco BOP-15" but all it is is a 50 position...
Mon. Jun 10, 2013 - 12:30 AM
What is a decade resistor box useful for?
I see these devices around, but have never really seen the value of them. Is the whole appeal that they act like a variable resistor with really fine resolution and massive range...
Sat. May 18, 2013 - 06:02 AM
Wire for prototypes/dead bugging/kloodges?
Hi - I remember a while back somebody posted a link to a website where a guy had perfected a technique of using some very specific type of enameled wire (I think) to make point to...
Wed. May 8, 2013 - 04:58 PM
Blocking 300MHz noise on a DCDC output
Hi - I have a synchronous boost converter that I'm working on. I'm seeing a ~1V positive spike on my output when my primary FET turns on. It is an approximately 300MHz spike. Any...
Mon. Sep 17, 2012 - 06:07 PM
Why aren't there reflections in oscilloscope probes?
So - I'm assuming that oscilloscope cables are 50 ohms. So why aren't there huge reflections on them? I mean, on a 1X cable you have about a 1M ohm source impedance driving the 50...
Fri. Sep 14, 2012 - 04:32 AM
Measuring MOSFET characteristics
I'm growing a bit weary of manufacturer specs... and I'm looking for a way of verifying them. Does anybody have a good technique for verifying gate charge ratings for FETs? I can...
Tue. Sep 11, 2012 - 12:10 AM
How to calibrate a Fluke 189?
Anybody have any idea how to calibrate a Fluke 189? I just noticed the other day that the mv readings are slightly off. According to page 91 of the manual, in the 50.000mv range...
Sun. Aug 12, 2012 - 05:03 PM

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