Radio Theory and design
Monday, July 29, 2019
introduction to electronics part 5 coils in DC circuits.
As you can see when I close the switch current doesn't build immediately.
I added a resistor to limit the current. It looks a lot like the capacitor curve, only in reverse. With the capacitor current starts at max and decays. with the coil current builds with time.
When I raise the resistor value it reduces the charge time.
TC = L/R remember raising the resistor with the capacitor increased the TC.
TC = R*C
The coil opposes a change in current. How? Why?
That will be the subject of the next post.
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