General > General Technical Chat

BJTs being phased out?

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rsjsouza:

--- Quote from: EEVblog on October 15, 2020, 10:01:41 am ---
--- Quote from: Benta on October 13, 2020, 08:17:09 pm ---I'm much more worried about the JFET, which is a dying species.
--- End quote ---

I'm feeling a Save the JFET T-Shirt coming on...

--- End quote ---
The UJTs are a much more endangered species...  :-DD

2N2646 forever!

(I still have a bunch from the ol' days)

coppice:

--- Quote from: tooki on October 15, 2020, 06:59:44 pm ---
--- Quote from: coppice on October 15, 2020, 06:31:46 pm ---The electret mic market was mostly phones and cell phones.

--- End quote ---
Uhhhh… electret mikes were in practically every tape recorder. They're still widely used in webcams, laptops, and all manner of audio devices. They're still in every landline or VOIP phone and headset.


--- Quote from: coppice on October 15, 2020, 06:31:46 pm ---Phones have almost gone.

--- End quote ---
At home, yes, they're going that way. In businesses, not really. They may not be true circuit-switched landline phones any more, they're VOIP, but they still use handsets with electrets. Call center style headsets also use electrets.

--- End quote ---
Have you been in an office lately? The VOIP phones are mostly ageng. Call centre still need them, but a huge number of desks no longer have a phone on them. Webcams and laptops seems to be using MEMS mics now, and the better ones use multiple mics for beam forming, so they need them to be very small.

coppice:

--- Quote from: rsjsouza on October 15, 2020, 07:13:13 pm ---The UJTs are a much more endangered species...  :-DD

2N2646 forever!

(I still have a bunch from the ol' days)

--- End quote ---
I miss the UJT. Its such a fun, flexible device.

tooki:
Nice of you to just ignore everything else I said, coppice… :(


--- Quote from: coppice on October 15, 2020, 07:13:35 pm ---Have you been in an office lately?

--- End quote ---
Yes, frequently.


--- Quote from: coppice on October 15, 2020, 07:13:35 pm ---The VOIP phones are mostly ageng. Call centre still need them, but a huge number of desks no longer have a phone on them.

--- End quote ---
And a huge number still do. In some companies, phones have gone away, but in many, they're still widely used. Industries and companies vary wildly in their communication styles.


--- Quote from: coppice on October 15, 2020, 07:13:35 pm ---Webcams and laptops seems to be using MEMS mics now
--- End quote ---
Certainly not universal. I could only find three webcam models that use them. On the other hand, even high-end webcams (like my Logitech Brio 4K) use electrets.


--- Quote from: coppice on October 15, 2020, 07:13:35 pm --- and the better ones use multiple mics for beam forming, so they need them to be very small.

--- End quote ---
I saw that in a live streaming camera (which connects to a phone, not a computer), but not webcams. Would make sense though!


Again, not saying that MEMS mikes aren't stealing a lot of sales volume from electrets. Just that electrets are FAR from obsolete, at least right now.

Benta:

--- Quote from: EEVblog on October 15, 2020, 10:01:41 am ---
--- Quote from: Benta on October 13, 2020, 08:17:09 pm ---I'm much more worried about the JFET, which is a dying species.
--- End quote ---

I'm feeling a Save the JFET T-Shirt coming on...

--- End quote ---

Not a bad idea. Just printing the JFET symbol on a T-Shirt would make 99.999999% of the population wonder what it's about.
I love it!   :-DD

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