Latest threads in Electronics Designshow only best voted threads
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Thyrsistor size.
I was thinking, maybe my next project could use a set of these Jamie
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8 years ago
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Surprise !!! Get $5-50 PCB cash coupons
Pcbway ( ) is the PCB manufacturer Good quality , Low prices, NO MOQ, 1pcs is OK Register now to get $5-50 cash coupons, You can use it to deduct the pcb cost More details pls feel free to contact us...
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8 years ago
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OT: Product Key for Streets & Trips 2013
Anyone have Product Key for Streets & Trips 2013? It was a download from several years back and I can't find the E-mail with the product key. Alternatively, is there an economical replacement?...
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8 years ago
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In The Ever lasting Chain Of Experiments The Next Project, ultrasonics part 12
In The Ever lasting Chain Of Experiments The Next Project, ultrasonic anti-fouling for boats. Part 13 Automation and other things. As I heard a tick every time the frequency changed when mounting the...
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8 years ago
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linearize thermistor
Sorry I know I've seen this here before.. But a quick search didn't yield what I wanted. (and I went looking in Phil H's book) I want to linearize an NTC thermistor (10 k ohm at 25C) What's the trick...
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8 years ago
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14 | |
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[PCB] thermals when pins and pads overlap
I've been placing SMD style pads over a footprints pins, to increase the copper in one direction, as the pins on the package are not cylindrical, but elongated. It seems I can not place thermals on...
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8 years ago
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OT: AC efficiency, how important is the splasher?
I'm wondering how important is an air conditioner splasher? How much does it improve efficiency? Seems to me like the splasher tends to damage the coil fins, either by causing rust or by flinging...
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8 years ago
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USB CDC device works on laptop, but not on WinBook tablet
I have a USB device that I designed several years ago, using the Microchip PIC18F2550, and it has worked mostly OK on various laptops. It has four DC-DC converters driven by the USB 5V power and it is...
12
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8 years ago
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12 | |
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Cheap Li-Ion batteries 8000mah on ebay?
Are these batteries good? Seems cheap for an 8 amp-hour Li-Ion battery. You get two for $7.77 plus $2 shipping, or maybe $5 apiece.. DESCRIPTION: Quantity:2 Standard voltage is 3.7V, the voltage of...
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8 years ago
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25 | |
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Photodiode placement
Hi, I am trying to figure out at what distance and angle should I place Light dependent resistors from each other to track the sun. For example, I saw the following products on amazon and ebay The...
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8 years ago
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16 | |
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Gas cell heater
So I've got this glass cell, a cylinder, 25mm by 25mm, it's got Rb and some Ne buffer gas inside. (The buffer gas stops the Rb atoms from diffusing to fast and hitting the walls.) It needs to be...
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8 years ago
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Third order IMD in photomultipliers--weird behaviour
I'm working on an interesting project for a biotech customer, and I could use some wisdom from the assembled multitude. They're building a scanning fluorescence microscope that scans several lines at...
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8 years ago
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Voltage losses in iGBT trippler
I have a trippler circuit that is losing voltage starts with ~+900 VDC and tripples to a theoretical -2700V by switching the +900 to sequential virtual earths( caps and a diode) via the BJTs. The DC...
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8 years ago
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Spiral layout is difficult to do exact as there is a lot of iterative math involved.
One hour only. Will repost again after.
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8 years ago
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32 | |
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test channel
Is there any funstion in Xbee digimesh to test if the channel is free or not ?
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8 years ago
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