Latest threads in Electronics Designshow only best voted threads
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Alkaline battery reverses polatirity - cause?
In my many years of dealing with electronics I've never seen this phenomena . I am curious as to a) the cause and b) the chemistry behind this. I have a remote control that has four AAA alkaline...
7
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4 years ago
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7 | |
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LT Spice library IRFZ44, Centered tapped Transformer and PV cell
Hi Dear all, Please help me to add following libraries in LT-Spice. 1. RFZ44 2. Centered tapped Transformer 3. PV cell Thank you in advance for your answer and cooperation. Regards, Qasim
13
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4 years ago
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13 | |
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Shade for panel-mount lighting
Does anyone make a panel lamp shade off-the-shelf? Something like a quarter section of a prolate spheroid (American) "football-shape" out of brass, say, that mounts to a rack chassis you could then...
5
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4 years ago
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5 | |
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BFQ18
In the data sheet, I wonder what "emitter capacitance" means.
8
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4 years ago
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8 | |
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Re: Paper Your Walls
They're a work of art IMV, especially the Major variant. The cylinder layout of 12.86 degrees apart must have taken some serious juggling to realise in practice. I know their cooling wasn't great due...
12
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4 years ago
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12 | |
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rounded pads
Rounded-corner pads are cool. U9 was throwing clearance errors with reasonable limits, but a bit of rounding fixed it. It's easy to do in PADS. Good for high voltages, too.
3
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4 years ago
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3 | |
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Cellphone texting problem
This may be a bit off topic, but I need an answer. This is becoming a real problem lately. My phone is an old fashioned flip phone. It does calls and texts ONLY. That is all I want and need. Im...
48
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4 years ago
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48 | |
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The new kilogram standard base material
Is Silicon 28 As it turns out, we can play with single Phosphorus atom stuck in there. Now that is electronics.
7
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4 years ago
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7 | |
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~60V shunt regulator... or not?
I recently bought one of these: which requires up to 70V input. I've made this circuit from an old UPS transformer and junk box parts:...
7
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4 years ago
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7 | |
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For concrete, climate change may mean a shorter lifespan
Article is five years old. Subject matter greatly expanded since. Nothing subjective about it any more, it is quite definitive. CO2 reacts with Fe in steel reinforcement causing expansion and...
17
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4 years ago
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17 | |
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Want to end congestion? Put a price on our roads
A 26-lane highway at $3 gigadollars that actually increases commute time by up to 50% ??? Hats off to Houston and their Katy Freeway! Ban the use of the very word, freeway, make it tollway. The days...
20
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4 years ago
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20 | |
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Nexperia F/F problem
I have a test circuit for some single flip flops, I'm testing a TinyLogic NC7SZ74: And Nexperia 74LVC2G74: It's just a divide-by-2 circuit, not-Q to D, preset and clear pulled high. With some...
15
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4 years ago
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15 | |
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Mains power puzzle
Hi to all my pals, on the bench I have a US made, bass instrument amplifier (Eden) in near new condition. It uses a 600VA toroidal tranny in the PSU. The "T5A" 20mm AC fuse installed was blown and...
97
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4 years ago
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97 | |
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Kill Youtube Ads
Youtubers often get carried away with ads, hoping to turn your patience into dollars. Some make you sit through the entire ad until it is finished. Others break your concentration so you forget what...
12
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4 years ago
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12 | |
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ecl comparator hysteresis
I'm going to use an ADCMP565 ecl-out comparator. The latch enable pins can be used to program hysteresis. On the A section, the hyst pins are sometimes called LEA and LEA, and in fig 6, LE and LEB....
35
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4 years ago
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35 |