Questions tagged [electrical-engineering]
Study and applications of electricity, electronics, and electromagnetism. Use this tag when someone who has trained as an electrical engineer is likely to be able to answer your question.
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Bonding Semiconductors to PCB
I'm trying to bond semiconductor samples (Si and Ge) area ~1-2cm^2 to
fiberglass printed circuit board (PCB)
We use West system marine epoxy for other things. 105 resin 209 hardener (long cure time.)
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What engineering advances paved the way for "modern" computers?
By "modern computers," I mean electronic programmable computers such as those that were developed about the middle of the 20th century.
My understanding is that early computers such as Charles ...
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How to correctly size the blades for a small educational wind turbine?
I want to design a small wind turbine that can be easily carried out of the classroom into the sports field in relatively low-wind conditions (5-15km/h) that can power a small ultra-bright 5V LED - ...
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How to reduce Engineering Bill of Material Cost for electronics products?
What is an effective method to re-engineer a current product to reduce engineering bill of material (EBOM) cost?
This is a continues improvement project for a current product in electronics space. ...
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CE Marking on low budgets: conforming to EMI / EMC requirements in ELV and mains circuits
For one-off, bespoke electronic products, or ventures on low budgets, what is the cheapest way of ensuring the product conforms to EMI/EMC requirements of CE marking? This can be at design time and / ...
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How can I filter out a signal while extracting only the desired one?
I know that my input signal contains a main sinusoidal signal, and I know its frequency but not its amplitude.
Until now, I have been successfully using the least-squares method to generate a ...
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How can I measure the brightness of a LED?
I would like be able to measure LED brightness using a cost effective instrument.
What are the available instruments to measure LED brightness and respective cost effective techniques?
Background: I'...
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Are there different solar panels for recapturing energy from household lighting?
I have been investigating recapturing energy from house lighting using solar panels.
Are there solar panels specifically designed to capture indoor lighting with a higher efficiency?
If so, what are ...
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Multi-position bi-stable solenoids in a small form factor
I am looking for multi-position bi-stable solenoids. So far, I have only found one vendor1 with a 3 position bi-stable solenoid.
Are there multi-position bi-stable solenoids with more than three ...
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What are the pros and cons of between Zigbee and Z-Wave communication protocols used in IoT device space?
Recently, both Zigbee and Z-wave tend to be the most commonly used protocol to communicate between Internet of Things (IoT) devices. Most of these IoT devices tend to have a combination of mechanical ...
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Why does the LTE Specification define SC-FDMA as the modulation scheme for the reverse link?
The LTE specification specifies SC-FDMA as the encoding scheme for the reverse link (mobile to base station) when the forward link uses OFDMA.
What is the reason for the difference?
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Magnetic levitation [closed]
I am currently considering turning my fascination with magnets into a diy activity.
How feasible is it for a hobbyist to construct a working model of a maglev device?
I'm looking to build something ...
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