In electronics there is hardly anything simpler than a voltage divider circuit. Most people know that
Vo = R2 / (R1 + R2) * Vi, where
R2 / (R1 + R2) = f is the divider fraction. But it is not obvious how to choose the resistor values. You can start with one value, calculate the other one, get...
My robotic lawnmower (Landroid M1000) stopped to work, complaining it is out of its work area. I knew the wire had some weak spots, but where? It is a few years old, several hundred meters long, hidden under grass... An interesting challenge.
For a couple weeks now I have this Hantek 2D42 handheld oscilloscope, multimeter and generator and it is time to start a review.
There is a cool group on Facebook called "Electronics Theory and Circuit Design". People have interesting ideas, the group has good spirit and culture.
But I had this not-so-nice discussion with a new member called Doug Hale. He proudly presented XY scope photos with a circles on a rectangular ras...
Today I need a ± 100V symmetric power supply for a few mA of current consumption. I have this power supply from my broken audio amplifier, which can deliver ± 40V or ± 50V DC peak, depending on the 4/8 Ω switch for the transformator taps. Can I double the voltage somehow?