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When a linear power supply is in operation the DC output voltage is regulated. The internal regulator circuit of the power supply takes its source voltage and produces a resistive voltage drop using its power control transistor so that the output voltage is at the desired level.  The difference in voltage potential between the source voltage and the output voltage is a critical quantity as it is one of the two factors in the wasted energy that must be dissipated by the power supply.   ...
Today I watched Karen's makerkaren   Video about building a circuit from a schematic:     https://www.element14.com/community/docs/DOC-91328/l/the-learning-circuit-34-making-a-circuit-from-a-schematic?sr=inbox&ru=360462   At first thought one might wonder what an old dog like me who has been playing with electronics for the last 62 years could learn from a beginners level 11 minute lesson on making a circuit from a schematic. As it turns out there is always a lot t ...
The Process Duration Timer has been a long term project of mine and has gone through several upgrades. Recently I have improved its utility by adding increased flexibility by adding a mechanism for it to disconnect one of its inputs when a process has finished. It has also been modified so that it will track an input voltage that is rising or falling towards a target voltage. An external interface was also designed so that it could track changes in light and temperature. I have covered these upg ...
jw0752

One Less Inconvenience

Posted by jw0752 Top Member Dec 9, 2018
I just finished a build that took me about 30 hours. While I am working on things I always try to be mindful of the flow of the work and whether there are things that are inconvenient in the shop environment. This could be related to the placement or organization of parts as well as tools. Inconvenience and trouble can mean there is an opportunity to improve. It is easy to accept things the way they are presently and soldier on but this leaves one with a situation that will frustrate over and ov ...