Latest threads in Electronics Designshow only best voted threads
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Tunnelling FET announced
Another physics curiosity probably rather than a robust device for engineering use but it has some interesting properties none the less. It is a bulk germanium and 2D bilayer of molybdenum disulphide...
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8 years ago
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OT: government study on flu shot effectiveness - continued
This is about the trade-off between protection from vaccinations versus harm done by vaccinations. Here is an article in which authors state, and I quote: "Although some studies were unable to find...
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8 years ago
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Resistor Values, MC1648
Anybody have any idea of whats inside an MC1648 besides the scrubbed schematic on the data sheet? Steve
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8 years ago
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74<magic>157 -- 3.3V supply, 5V tolerant inputs?
Is there a 74xx logic series that sports a 3.3V supply and 5V tolerant inputs? I'm just looking at an existing board that's been in production for a while in which I made a mistake. The board has a...
22
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8 years ago
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power transformer inductance
I'm wondering if anyone knows the approximate inductance of the primary and secondary on one of those little 1 watt 120-12.6 power transformers, at _audio frequencies_ (~15kHz)?
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8 years ago
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VHF antenna question
Newbie antenna question. I don't deal with RF stuff, at all. I want to listen to air traffic communications that sit between 118 and 135MHz. The rubber ducky indoors isn't cutting it. It looks like...
30
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8 years ago
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30 | |
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Seek expert opinion on the following
May I ask all you gurus on yjis newsgroup. What do think about the following: OR Not sure if it is that easy -- so I ask. Thanks in advance.
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8 years ago
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DC Coupled Soundcard DAC Mod
I want to generate a signal in my computer that has a DC offset and output them to the real world. Unfortunately, the DC offset does not pass through my soundcard. So I found this "solution" online....
19
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8 years ago
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Commercial speed controller for power tools?
Specifically... I might buy a Rockwell BladeRunner X2, but I'd like to add variable speed. I'm looking around for information about its type of motor. Does this from the owner's manual suggest the...
2
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8 years ago
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RF Splitter/Combiner ??
I have a pile of ChannelPlus Model 2509 Splitter/Combiners __________________ ____| |____ |____| IN OUT |____| | | | | | -9dB TAP | |__________________| | | | | |__| I understand the Splitter...
28
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8 years ago
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Some please tell me this circuit does what I hope it does
the time-lapse 555 circuit here: What I need to know is when the circuit fires the shutter, are the two camera pins effectively shorted? (going to use it for something else if so)
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8 years ago
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another opto-amp
It looks like I'll use this one: The max output current will be a bit less than the Idss of the fets, about 1 mA maybe. That won't stress my wimpy HV supply. There is one hazard: if an opto really...
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8 years ago
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eight dollar 0805 resistor
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com
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8 years ago
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scary
There's an envelope in my inbox that says FINAL NOTICE. It's from the National Rifle Association. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att...
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8 years ago
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Mackie SR24.4
Does anyone have any experience with the Mackie SR24.4 A customer asked if I could repair one which he said had a power issue. So I was hoping for an easy power supply repair but on opening it I find...
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8 years ago
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