4 ms·
Old-style dimmers just lower the voltage, which works great for incandescents, but LEDs are made to operate at specific voltages. Modern dimmers cost more, but
by frosted-flakes 6y ago
Old-style dimmers just lower the voltage, which works great for incandescents, but LEDs are made to operate at specific voltages. Modern dimmers cost more, but use PWM (pulse-width modulation) instead. Basically, they rapidly open and close the circuit to simulate lower voltages.
- downerending 6y agoI feel like these two objects need different names (especially since the difference matters).