Latest threads in Electronics Designshow only best voted threads
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(LT SPICE ) i need hlep
Hi my problem is hoe i can find Q-point of amplifier mosfet
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9 years ago
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A 2.4GHz to 1.5 GHz down converter layout, and VCO internals.
As the LO in the down converter is clearly stable, as this picture shows: the instability in the QAM constellation must originate in the transmitter. As the transmitter is OK at 1.5 GHz, it must be in...
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9 years ago
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really funny
The entire world economy will soon consist of everyone selling everyone else apps.
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9 years ago
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climate: cool video
-- John Larkin Highland Technology, Inc picosecond timing laser drivers and controllers jlarkin att highlandtechnology dott com
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9 years ago
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RoHS & NOS Parts
What's the situation with RoHS rules and NOS parts, ie from pre-RoHS, and also used parts post RoHS? On gov uk site I didnt find the content of the relevant legislation. We could sell quite a lot if...
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9 years ago
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multi-stage Voltage multiplier output voltage instability
I have a X10 half wave voltage multiplier simular to this one. The input is 200Vp-p at 50KHz signwave. The output is ~2kV. It is constructed with NPO caps of 33uF each and Cree 1A 600V SiC diodes. I...
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9 years ago
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OT: "Better all the Time" essay in the New Yorker and US teacher training.
The November 10 2014 copy of The New Yorker has a "critic at large" essay from James Surowiecki. It starts off on the training regimes of elite athlete's, which have become much more sophisticated and...
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9 years ago
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PIC24 USB suspend current
I've posted this on a Microchip forum, but I thought I'd see whether anyone here knows the answer. I'm using a PIC24FJ64GB004 family MCU. Is there any way of getting this MCU to consume no more than...
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9 years ago
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Grounding an aluminum enclosure to copper pads on a PCB
So we found a place to weld an aluminum wire to an aluminum enclosure (19mm diameter tube). Now we are trying to figure out an economical way to connect that wire to a PCB. The suggestion we have is...
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9 years ago
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Skunk Works' Compact Fusion Reactor Patents Issued
It was just announced that Lockheed-Martin Company had been granted patents on their new fusion reactor design. I saw an article on page B1 of the 14 November 2014 issue of The Wall Street Journal...
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9 years ago
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Measuring high resistance
Is there a simple way to do high resistance measurements (as per using a Megga) ? I need to do isolation tests and record results >20M.... most measurements with a mega are >>1G Accuracy is not a...
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9 years ago
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Released version 0.3 of my rtl_sdr based spectrum analyzer software for Linux:
Released version 0.3 of my rtl_sdr based spectrum analyzer software for Linux: xpsa requires a DVB-T USB stick, librtlsdr, libforms (xforms), fftw3, some other stuff. This one supports any mixers up...
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9 years ago
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Off topic sorta -- space heaters
-- And I ask you guys because this is my go to group. Even if it's electrical I can get a definitive answer here. Don't really know Jack S. about heater technology, all I know is a watt is a watt but...
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9 years ago
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BNC Connectors
For the outer (screen) on a mating pair of BNC's, what is supposed to be the mating surface? From the male perspective, is it the outer surface (circumference) of the tube - which always seems loose...
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9 years ago
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Proximity sensors
I need to detect the presence of an object at the front of my PCB with a maximum distance about 10-20cm. The behaviour would be similar to the proximity sensor found in modern touch-screen smartphones...
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9 years ago
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