What is the difference between an electronic and a magnetic ballast?

Question

The ballast in my bathroom burned out (brand new bulb won't light up). Looking online, it seems that there are two different types of ballasts: electronic and magnetic.

I recently replaced my kitchen ballast, and the new one was much lighter than the old one. I assume that is because the new ballast is electronic and the old one was magnetic. Other than weight, what is the difference in terms of reliability, longevity, efficiency, etc.?

Answer 1

Reduced Weight

As you've noticed, electronic ballasts are lighter.

Reduced Lamp Flicker

Because the electronic ballast operates at a higher cycle rate, flicker is less noticeable.

Quieter Operation

Again, because of the high cycle rate, hum is reduced.

More Efficient

Magnetic ballasts can have losses between 5-25%, while electronic ballasts have better current control making them more efficient.

No Starters Required

Magnetic ballasts required a starter to get the lamp lit, electronic ballasts do not require a starter.

Higher Price

Electronic ballasts are typically more expensive, though you may find that this is no longer a problem.