Circuit Stories

Ten days ago, my favorite question about the role of the op-amp in the inverting integrator  was asked. I could not remain indifferent and with great pleasure I wrote my answer . Then I wrote comments under the other questions. LvW answered me and a discussion started between us which grew into a chat . We have known each other for a long time and have discussed various issues many times ... but now there was some change in us.  We had become more tolerant of each other and this was clearly the key to success. I have extracted and written below my thoughts from the chat.

Stepping in the world of machinery 1954.   I came into the world... 1959.   At the age of five, I made my first “invention” -- a hydraulic integrator (water clock). In the presence of my family I filled a tin-can with water, made a small hole in it and starry-eyed watched the water slowly draining from the tin. Perhaps that was my first encounter with the pressurelike and flowlike attributes of the world, deeply impressed me. Thus I was sure that one day I will become a technician. Coming to know of electricity 1964.  As a ten year old boy in a primary school I was captivated by the magic of electricity. The first electrical device that really intrigued me was a DC bell given to me by an electrician acquaintance. It was a real mystery to me how the bell vibrated on its own, but I managed to figure it out... I remember “inventing” something like an inertia sensor or what at present, in  security systems, is referred to as tilt sensor . I fixed the screw cap of a ...