Latest threads in Electronics Designshow only best voted threads
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Boonton 93A True RMS Voltmeter
Hi All, I bought a Boonton 93A True RMS Voltmeter at a hamfest last weekend. I paid $5.00, I figured it probably didn't work, but for $5, I'd have a project. I plugged it in tonight and it works,...
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10 years ago
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Clipping/peak Indicator Circuit Help
I have built one channel of the peak indicator below, but am having difficulty getting it to work as expected. The output of the op amp sits at around 5V, and then drops to 1V when the upper threshold...
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10 years ago
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current amplifier or current to voltage op-amp
Hi, I want to measure very weak piezoelectric signal from a quartz crystal dete ctor that mechanically vibrate. Although I can simply measure the output using a preamp, such as SRS 560, i t seems I...
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10 years ago
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OT: re US - rathole of dictatorship
..err..Obamaism. The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. -- Thomas Jefferson
66
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10 years ago
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Capacitance of a 0402 package
Folks, while looking for ferrite beads I came across this: The bead on the last page bottom right shows Z at around 800ohms at 3GHz. That comes to less than 0.07pF. Just wondering, how do they do this...
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10 years ago
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EME Moon Bounce: There has to be a signal in here somewhere!
Greetings I wonder if anyone has delved into the arcania of the DSP algorithm used in the W7PAU (if I remember right) moon echo experiment? I just wonder exactly what he did with the signal...
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10 years ago
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21 | |
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Call for Papers: 3rd International Conference on E-Learning and E-Technologies in Education ICEEE 2014
The Third International Conference on E-Learning and E-Technologies in Educ ation (ICEEE2014) March 18-20, 2014 Asia Pacific University of Technology and Innovation (APU) Kuala Lumpur, Malaysia The...
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10 years ago
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OT: rejection
Subject: How to handle rejections Herbert A Millington Chair - Search Committee Whitson University College Hill, MA 34109 Dear Professor Millington, Thank you for your letter of March 16. After...
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10 years ago
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Fast RF diodes, breakdown voltage ratings
Related to another sample&hold thread I was wondering about the breakdown voltage of RF diodes. For example, the SMS7621 that John Larkin suggested looks really good at only 0.25pF capacitance. But...
42
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10 years ago
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42 | |
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Capacitive touch screens
Does anyone know any really good tutorials/whitepapers/whatever on how capacitive touch screens work? I don't need to design one, but I've got a 'puter with one that's susceptible to something one of...
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10 years ago
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PING: John Larkin TPS2024
Hi John, I seem to remember you having said that you have a TPS2024. When you get a moment could you take a look at the power adapter and see what it's rated at in terms of voltage output and current...
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10 years ago
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Buck-boost DC-DC converter online simulation
Online simulation of buck-boost converter DC-DC converter is ready. Buck-boost DC-DC converter has special feature that output voltage is with negative polarity, and absolute value of the output...
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10 years ago
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Wide Band Noise Source
I have seen plenty of published circuits for audio frequency white/pink noise generators. What is involved in producing noise up into the low GHz region? I don't care if it is flat, or other expensive...
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10 years ago
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Type of Modulation Used in Walkie Talkie
Does anyone know what the transmitted waveform of a current production walkie talkie looks like. Would it be suitable for continuous data transmission? Originally, I think they used FM. Are they all...
7
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10 years ago
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Wallwart substitution
I simple question if I may.....After somehow having an adapter burn out on me I don't have an exact replacement to the 16VAC Could I safely use a 12VAC instead? thanks.
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10 years ago
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