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#ee

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Question to all the #ee or #electronics experts here: I have two TI chips here. the one in the background is from 1985 and has shiny legs. The one in the foreground I bought in the last 5 years new from Mouser. It came with those tarnished legs already from the factory. Why are the legs so tarnished? What coating does TI use that makes it so black looking. I understand that back in the 70s supposedly TI used a silver coating that turned black over the decades, but this is something different...?

In the UK, telecom companies #BT and #EE are now “one powerful partnership” that somehow couldn’t figure out that customers moving from one to the other might use the same email address for both their old BT ID and their new EE ID, such that their EE ID wouldn’t work to access free EE WiFi.

EE told me to check again in 30 days, and if I wanted access to an EE-branded hotspot in the meantime I could call for a free voucher. 🤦‍♂️

Continued thread

This journey has been one of discovery, but, not in the way I expected.

After buying two 'phones and a Windows laptop (for flashing 'phones using Windows apps) I've managed to get VoLTE working on my *original* 'phone, a Moto G7 Plus.

Much of the credit lies with EE, who haven't arbitrarily disabled swathes of 'phone models in the way Three/Smarty have done. I now have VoLTE working flawlessly in LineageOS 22.1.

Anyone want to buy two 'phones and a Windows laptop?

Wer bei solcher Solarleistung, selbst unserer Mini-Anlage nicht in Verzückung gerät, muss ein Petrolhead sein. Im März praktisch kein Tag in den letzten Tagen, an dem die Batterie nicht geladen war und zur Autoarkie beigetragen hat. So macht Energiewende Spaß. Die Anlage der Größe kriegst du mittlerweile für 4 stellige Beträge. Die grüne Linie ist die Batterieladung.

#ee#solar#pv

So when you have a bunch of jellybean JFETs (2N5457), time to burn, and a handful of 1uF bipolar capacitors…
What to do.. 🤷🏼‍♂️🤓

I decided to build a simple amplifier 😃 Although many find JFETs aren’t quite as intuitive as a regular BJTs, they’re not THAT scary 👻😂 and they’re easily biased, using a megaohm sized resistor from the gate to ground.

To be able to do some more accurate calculations, I decided to measure the maximum drain current, IDSS, and the negative Gate-Source cut-off (pinch off) voltage, as they can vary significantly even between devices even from the same batch.

A fun evening in the lab 😃

In #EE, "information" is entropy, something new, something surprising, something noteworthy—"news", that is.

But what news is the US media outlets barfing out, these days? Any organism with a brain volume greater than 1 mL can grasp that there is nothing newsworthy being reported. Such is the state of our social, political, and economical systems.