3 ms·
I will bite and counter that resistors are needed to prevent wasting energy. Current limiting resistors are used in many different places like low power electro
by gmueckl 8y ago
I will bite and counter that resistors are needed to prevent wasting energy. Current limiting resistors are used in many different places like low power electronics (these are always very high resistance) and drivers for electric motors (a powered electric motor blocked at rest is the same as a short circuit).
- madengr 8y agoThough you can do the same current limiting with a pulse width modulated switch (similar to a switching power supply). My point being you can take a resistive element and replace it with a switched transistor. All ideally of course, since it’s not practical many times.
- magicalhippo 8y agoHow would you make a constant-current power supply without resistors?