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quick Smith chart question [h/w]
This is for school. I'm trying to match a single transistor 1GHz amp output stage (common emitter) with a double-stub tuner. A 10mm-20mm TL (length L2) runs between the collector...
Sun. Nov 14, 2010 - 09:19 PM
What's this system/circuit called? [debunked]
[EDIT: This doesn't work. Do not read!] What is this circuit called? Seems to be a simple way to output a sine wave, so it must have some standard name. I couldn't find it in The...
Wed. Nov 3, 2010 - 04:47 PM
microwave freq. response of axial lead thin film resistor?
Does anyone know where I can find some basic info on this? I have to use this horrible part, 100-ohm 5%, as a 'lumped element' in a microstrip circuit (power divider) for a school...
Fri. Oct 15, 2010 - 08:53 AM
Oscilloscope vs. probe frequency ratings
After a lucky impulse buy of a 100MHz* scope last night, I may as well take advantage of combined shipping and grab some probes of which I am short. I need at least 2 more for my...
Mon. Sep 20, 2010 - 01:48 AM
Do you recognize this connector?
A friend gave me the task of making his 7-seg display for his vintage motorbike out of new parts, as the old ones aren't sold anymore or in stock. I think he said that it's a 70's...
Fri. Aug 27, 2010 - 07:19 AM
What is this trace geometry for?
I accidentally shorted something out with a screwdriver on my car stereo head unit, and it doesn't work anymore. I think I found the damage, but I'm not sure it's a fault, as it's...
Thu. Apr 29, 2010 - 01:22 AM
Changing ADC channels in free-running mode
I just ran out of time* on a school project, and am wondering about something. I implemented a free-running ADC loop that changed channels between each conversion. Having used AVR...
Sun. Apr 11, 2010 - 02:16 AM
newbie needs tissues for character array issues
I think I need to provide a contiguous memory space for my function to write to. How do I do that? I.e.: "s" only points to a single byte, and I need a truckload, but I don't know...
Tue. Apr 6, 2010 - 02:18 AM
custom string class or use std::string?
I try to use standard libraries whenever I can (until I run out of memory). I just found out that the avr-libc implementation of string.h doesn't include the "string" type (no...
Wed. Mar 31, 2010 - 06:29 PM
Do popular terminal emulators send strings or char arrays?
ie: Do they NULL terminate the character arrays? By 'popular', I mean Hyperterminal and TeraTerm. I am reading characters until I encounter '\0', and want to make sure this...
Sat. Mar 20, 2010 - 04:22 PM