Latest threads in Electronics Designshow only best voted threads
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Who is CJMCU? Can they be reached?
As described in other threads, I'm working on embedding a USB-to-serial adapter in one of my MSP430 projects, and I've found the perfect adapter for this purpose. It's smaller than the other adapters,...
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7 years ago
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Emacs Noisebox
I am back to learning Emacs today and I've discovered it is quite the little noise box. It likes to use the system default beep for all manner of trivial things such as scrolling past the limit of the...
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7 years ago
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common mode choke
Any recommendations on an effective common choke for making low frequency m easurements (~10 Hz)? I have measurement problem where I need to make meas urements in microvolt range but in an...
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7 years ago
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Audio amp Mystery
I have a little transistor radio that was drawing excessive power from the battery. It was about 125mA at 6 volts which is 10 times too much. I found I could bend the circuit board to eliminate the...
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7 years ago
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Blob-board for high-freq prototyping
Instead of prototyping "dead bug" on the usual sheet of copper-clad FR4, has anyone tried laying out more "permanent prototypes" of RF circuits where you a) place all your components on a piece of...
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7 years ago
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3D Food Printers are the way of our future.
3D Food Printers are the way of our future. I really like the idea of these 3D food printers, which will create over 10,000 types of food from 25lb or 50lb bags of simple food pellets. I have always...
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7 years ago
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Where can I get the vinyl record called "Time and Date"?
When I was young, I had the vinyl record called "Time and Date". Whenever I needed to know the current time or date, I would just put that record on my turntable, and I would immediately know the time...
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7 years ago
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Ground is no longer at ground potential
Scientists have determined that ground is no longer at ground potential. It dont matter if you're referring to the ground for your home's electrical system, or the chassis ground in an electronic...
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7 years ago
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All Banana Plugs are Defective
I bought some banana plugs at the local Radio Shack. They were no good. I then ordered some on Ebay from a seller in California. They were no good. I finally ordered some from China, thinking they...
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7 years ago
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Duplicating Signetics Generic I based PROMs
I have a late 1970s designed peripheral for an Apple II, and am in the proc ess of reverse-engineering the peripheral and lay out a new PCB design. On the card, it uses an Intersil IM5623 PROM. It is...
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7 years ago
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current-mode opamp noise
I need a fast, high slew, low noise amplifier with a precise gain of +3. The fastest opamps around are current-mode parts. They tend to have impressive voltage noise specs, but they have terrible DC...
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7 years ago
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SpaceX gets a $2.6 Billion Contract
Looks like they will be carrying humans to the ISS. I was not aware of one of the reasons why the rocket business is so good. "There was also an attractive quirk of the satellite launch business:...
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7 years ago
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Peculiar type of audiophool
Vintage synthesizer aficionados are a peculiar subculture of the regular fashion of audiophools. You'd think owning a $8000 40 year old collectors-item synthesizer would be enough, but they also have...
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7 years ago
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"Slepian's Box"
So, waaay back in college, I was shown the circuit below, and told that the input impedance, Z, is always equal to R if L*C = R^2. That's true, and can be proven -- so it's kind of a universal...
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7 years ago
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OT: DemCrap just keeps unraveling...
OT: DemCrap just keeps unraveling... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142...
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7 years ago
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