| ??? 01/26/10 14:52 Modified: 01/26/10 14:52 Read: times |
#172730 - flipdot Responding to: ???'s previous message |
Erik Malund said:
before LEDs became economically feasible we used "flip-dots" which is a metal semicircle that is held in either position by one of two magnets. To flip it you energize a coil arounr the appropiate magnet ONCE and the black or yellow side of the semicircle will show.
Erik The question now arise is whether a single 'flip dot' is sold comercially and the amount of current consumed in one transition? . -Ap |
| Topic | Author | Date |
| Low power indication | 01/01/70 00:00 | |
| By a blinking LED with very low duty cycle... | 01/01/70 00:00 | |
| Some more information | 01/01/70 00:00 | |
| A few days, or even more... | 01/01/70 00:00 | |
| Scheme... | 01/01/70 00:00 | |
| Thank you | 01/01/70 00:00 | |
| Choice of LED | 01/01/70 00:00 | |
| can be "Electrochromatic (electrochromic) display"? | 01/01/70 00:00 | |
| Comms interface? | 01/01/70 00:00 | |
| LCD? | 01/01/70 00:00 | |
| 10000 Hours... | 01/01/70 00:00 | |
| Rightly Put | 01/01/70 00:00 | |
| Why not? | 01/01/70 00:00 | |
| Not to knock it... | 01/01/70 00:00 | |
| Language barrier... | 01/01/70 00:00 | |
| possibly ???? | 01/01/70 00:00 | |
| flipdot | 01/01/70 00:00 | |
| spare part | 01/01/70 00:00 | |
| After all this discussion... | 01/01/70 00:00 | |
| Yes, LCD is highly recommended | 01/01/70 00:00 | |
| often more than a dot is available | 01/01/70 00:00 | |
| but O/P didn't mention any LCD ;-( | 01/01/70 00:00 | |
| No ... but someone else did | 01/01/70 00:00 | |
| "Bistable" LCDs - "Cholesteric" | 01/01/70 00:00 | |
What you want is... | 01/01/70 00:00 |