HV damages meter?

Started by Ed Lee in sci.electronics.design2 weeks ago 47 replies

But not immediately. I tested 400V occasionally, but couple of them died while testing 12V. I am wondering it 400V weaken the meter. The old...

But not immediately. I tested 400V occasionally, but couple of them died while testing 12V. I am wondering it 400V weaken the meter. The old CenTech meters are 1000V, but the new models are 250V. Why even bother to have 50V more than the next range of 200V. Perhaps it's just same design with new label, when they got enough reports/complaints. I am wondering if it's worth picking up some ...


Easily Assembled Passive Component Sizes

Started by Ricky in sci.electronics.design2 weeks ago 16 replies

I've always used 0603 (1608 metric) size passives as the minimum size in my designs to optimize manufacturing. I'm told the smaller the part, the...

I've always used 0603 (1608 metric) size passives as the minimum size in my designs to optimize manufacturing. I'm told the smaller the part, the more likely it is to tombstone, stand up with only one end soldered. The common sizes below 0603 seem to be 0402 and 0201. 0402 would not seem to have a big size reduction, but if it's an advantage without penalty, why not take it. 0201 is much s...


First Computer

Started by Dean Hoffman in sci.electronics.design2 weeks ago 25 replies

I was watching the show Mail Call. It talks of anything military. Guns, artillery, ships, whatever. The narrator claimed the first computer...

I was watching the show Mail Call. It talks of anything military. Guns, artillery, ships, whatever. The narrator claimed the first computer might've been on the USS Missouri. It aimed the guns on the ship. Is there such a thing as the first computer?


OT, Tinnitus

Started by Lamont Cranston in sci.electronics.design2 weeks ago 6 replies

I have a phone osc app, I fired it up to see if I could match the frequency of the ringing in my ear (s). I'm down 50 or 60DB at 4kHz. I started...

I have a phone osc app, I fired it up to see if I could match the frequency of the ringing in my ear (s). I'm down 50 or 60DB at 4kHz. I started at 7kHz and as I increment it down I could hear a much lower frequency that was decreasing in frequency until at 6920Hz the low frequency stopped. It did not start back up on the lower side of 6920Hz. Is it possible I was hearing a mixing f


Analog (optical) filters

Started by bitrex in sci.electronics.design2 weeks ago 14 replies

Before they were built into your phone's camera. From a Seattle Filmwork's catalog found among a late relative's personal effects. Winter,...

Before they were built into your phone's camera. From a Seattle Filmwork's catalog found among a late relative's personal effects. Winter, 1985:


EPC2308

Started by John Larkin in sci.electronics.design2 weeks ago 4 replies

https://www.digikey.com/en/products/detail/epc/epc2308engrt/16784421 I recall some EPC suit saying that they would never sell a packaged part.

https://www.digikey.com/en/products/detail/epc/epc2308engrt/16784421 I recall some EPC suit saying that they would never sell a packaged part.


mylucknursinghome

Started by pondee deeto in sci.electronics.design2 weeks ago 1 reply

ศูนย์ดูแลผู้ป่วย Focusing on holistic care, tailoring care...

ศูนย์ดูแลผู้ป่วย Focusing on holistic care, tailoring care according to needs as appropriate and ability for individual senior citizens which is taking care of the elderly


Facing Problem in Finding Solutions.

Started by Ashley Carol in sci.electronics.design2 weeks ago

Click Here : https://t.co/AuJoYjkjLi

Click Here : https://t.co/AuJoYjkjLi


OT. Mailbox Flag Up

Started by Dean Hoffman in sci.electronics.design2 weeks ago 3 replies

That's supposed to tell the mailman to stop.

That's supposed to tell the mailman to stop.


Yet Another Bat Virus

Started by Fred Bloggs in sci.electronics.design2 weeks ago

“Nipah virus poses a considerable pandemic threat because it mutates relatively easily, causes disease in a wide range of mammals, can...

“Nipah virus poses a considerable pandemic threat because it mutates relatively easily, causes disease in a wide range of mammals, can transmit from person-to-person, and kills a large percentage of the people it infects,” said NIAID Director Anthony S. Fauci, M.D. “The need for a preventive Nipah virus vaccine is significant.” The virus can cause


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