Viewing a single comment thread. View all comments

KentDarkmere t1_j7lqpf5 wrote

Reply to comment by positivecynik in TIL the first Blue LED wasn't commercially available until 1989 and bright blue LEDs weren't available until 1993. by j-merc23

I think I would of just used a resistor in parallel with the led

13

nocrashing t1_j7lxfkk wrote

Series but yeah

19

Admetus t1_j7opryj wrote

Also wouldn't the internal resistance of the batteries mean those blue LEDs were drawing less than 5V? 🤔

1