Latest threads in Electronics Designshow only best voted threads
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RF bipolars RIP
Looks like NXP is discontinuing their SOT89 RF bipolars, like BFQ149 and BFG31 and such. Bummer. I just designed them in. They have equivalent SOT23s that they rate for 600 milliwatts. SIX HUNDRED...
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7 years ago
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95 | |
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OT: Dakota Pipeline Steel
Okay, we've all heard that Trump asked "who made the pipe" re: the Dakota oil pipeline, and wanted it to come only from U. S. manufacturers. So now the Left is screaming that it's made by a Russian...
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7 years ago
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Trust your what-hour err watt hour meter
....."The inaccurate readings are attributed to the energy meter's design, together with the increasing use of modern (often energy-efficient) switching devices. Here, the electricity being consumed...
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7 years ago
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34 | |
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Art of Electronics 3rd Ed. Easter Eggs
Check the index... :) "beast, the number of the, 666" But more importantly, rather than giving it away... "egg, Easter, /see/ if you can find all eight" But there's nothing under "if". I think I'm...
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7 years ago
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OT: Domain Name registration
I'm looking at registering a domain name and making a website. Mainly for t he email. I currently pay for an email address cause I don't trust the free ones. Sometimes I look into paying a little more...
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7 years ago
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LED Dimming Control
I want to be able to dim a 100 watt LED module. The supply that came with it doesn't support dimming in spite of the fact I was told it would. So I'm thinking of adding a dimming function. Rather than...
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7 years ago
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Current Shunts
I wanted to do some work with battery charging and powering a 100 W load. So I bought a couple of combination panel meters that will measure voltage, current and power as well as an energy running...
4
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7 years ago
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RIS-660A, my latest upgraded design
Segmented photodiodes are used for lightbeam position sensing. Generally you want to know relative light beam displacement, rather than absolute light levels. We solve this with a normalizing...
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7 years ago
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pHEMT
In talking about pHEMT's, how do *you* pronounce it? I've just had a meeting where "feemt" and "pee-hemt" was used. Since the context was obvious I stuck with transistor!
5
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7 years ago
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5 | |
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Slightly OT: Wine fridge temperature hysteresis?
What is normal for a temperature hysteresis (or "dead band") in a wine fridge? I am seeing 5F and more. It is a Vinotemp VT182. Long story short I modified it to become a beer fermenting chamber and...
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7 years ago
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A useful addition to your toolkit
Replace the existing connector with a BNC, add a bit of series resistance and you have a *very* cheap current probe for your scope.
63
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7 years ago
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Telephony Abbreviations
4WTO - Four wire transmission only In the context I see this I expect it really means bidirectional analog audio with no handshake signals. Is that right? I can't find a definition for this other than...
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7 years ago
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Using a small portable solid state amplifier to trace an audio circuit???
I have a small portable solid state amplifier that can run off batteries or a wall wart. (12V). I want to trace the circuits in a solid state Hammond Organ. (To listen for audio signals). So, this amp...
5
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7 years ago
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OT Anyting Exit
Sure, they start this shit, Calexit and possibly Texas. But remember many years ago when seven states got together and started a war, wanting out of the union. What happened to them ? You really think...
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7 years ago
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Ohm's Law Sine Wave Correction
If an Ohm's Law calculation yields a figure of 2A, what is the rule of thumb (multiplier) for correcting this from DC to an AC sine wave of the same voltage? Robert Miller
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7 years ago
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