Analysing circuits with two different power supplies can be tricky. There are a few approaches one can take. In this video, I show firstly how Kirchhoff’s Laws can be used with simultaneous equations to brute-force answers, and how to take a slightly more elegant approach by using the principle of superposition.
Yearly Archives: 2024
ChatGPT is getting too sassy
The atom joke is also a pet hate of mine because it’s just wrong
Fun with Op Amps
One can see the same potential applied to both inputs of the op amp, causing 0V output potential. That made sense. When connecting the inverting input pin to half the potential of the output (using two 10 kΩ fixed resistors as a potential divider), the output potential became 10V. Well, half of 10V is 5V, so that would make the inverting input potential 5V, the same as in the first case, yet the output potential is different.
Not the aurora after all
Whilst I’m sure it was still impressive and exciting looking at ‘rainbow clouds’, it was a big let down compared to the prospect of looking at an aurora this far South.
Physics with Keith 