Created; < 2011, Changed 10/02/2022, 20/12/2021
1950's Germanium bipolar junction power transistors alongside modern surface mount, Silicon MOSFET power transistors.
OC28, OC35 (5-8A or 25-35V) and IPT60P028G7 Infineon (600V and 75A).
Secondary breakdown that occurs in Bipolar-Junction-transistors in OC28 and OC35 can only handle the maximum current when the voltage is less than 5V.
A MOSFET does not suffer from secondary breakdown and so can handle both maximum current and voltage together very briefly.
The green push-button and the calliper battery tester was part of a children's electrical experimental kit.
The flaw in writing about electronics is that young people learn hands-on mostly. An adult can help by guiding the young person but even then in small pieces. The kit had a bulb, bulb-holder, calliper style battery checker with a bulb, bell, buzzer and some wire.
The electronics I discuss is mostly analogue electronics which is a key part of all physical electronics design.
I am an electronics design engineer but what I design or use are electronic. Engineers interpret wishes into a practical solution and work together with scientists who propose ideal solutions.
This is a simple and probably a cheaper solution than using an IC with a similar function, such as resettable fuse.
I have been designing and making things since before I went to school.
Electronics My personal tips as an Electronics Design Engineer
Example of my work for Hoofprints Technologies Ltd - RF design long-range low power radio using the same principles as I discuss elsewhere for all-analogue design.2016-2017
Revamp of the Wind Turbine for Electrical Power Generation at Brickhurst Farm an old project archived
British Engineering and the TV science fiction.
Science Fiction and Dr Who Classic Estb. 1963 Read some pages, comment, go back find the pages you read say something different. Just like Doctor Who.
In light of surveillance, Windows vulnerabilities versus also ease of use how does Linux do compared to Windows?
Home desktop computer Linux and switching from Windows