Q&A

摘要

I have a GM car (Buick Regal 1999). I found that when one of the turn-signal bulbs blow, the flashing rate speeds up. The turn bulbs are connected in parallel (front and rear), so when one bulb blows (open), the total resistance increases. In this case, the flashing rate should slow down and not speed up, correct? Any explanation? That's a great question, Samy. We'll have to turn back the clock a bit to account for this behavior. Prior to transistors being cheap and ubiquitous, turn-signal flashing relied on what we would call a thermal relaxation oscillator.