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gecoz

Forgotten treasure

Posted by gecoz Feb 21, 2019
I can still remember when, more than 4 decades ago, I was used to go and visit my grandmother Vincenza at her place for every holiday. It was never a long stay, just a day trip, as she lived in Nettuno, near Anzio (famous for the landing of the Allied forces during the second World War), about an hour away from Rome, where I was born. We would arrive usually mid morning.   There were a few hunches that would make you immediately realise that was my grandma's home: the first was the lovely s ...
jc2048

Transistors: Saturation

Posted by jc2048 Feb 5, 2019
This is another exploratory blog relating to bipolar junction transistors (BJTs). This time I'm going to look at saturation.   Be aware that I'm not an expert in all this: I'm studying it and you're looking over my shoulder as I experiment and explore the subject. So this is not a tutorial and some of my explanations may, at times, be wrong.   What is saturation and why does it occur?   If you take an NPN transistor, like the 2N3904 devices I've been using in most of my expe ...
Happy Lunar New Year!  This year ushers in the Year of the Pig for 2019!   Now this is a year I can relate to, being born in the Year of the Pig myself, this year welcomes the types of pigs that like to keep their feet to the ground being the Earth type!   It Pays to be a Pig Regardless of which element of Pig you're born as, you're probably suited to being an Engineer. Being a Water pig myself, I'm allegedly "responsible, serious and full of ideas, listen and communicate well" ...
This blog grew out of my getting interested in wideband voltage amplifiers as a result of doing the transistor load. Something that's fascinating with all this blogging is that, whatever subject I choose to cover, it naturally seems to lead on to other related material to explore and experiment with.   With the transistor load, a voltage amplifier formed part of the circuit. That controlled a MOSFET to adjust the output current, with overall feedback to keep the current accurate. T ...

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