| ??? 10/24/08 17:02 Read: times |
#159314 - the schematic is Responding to: ???'s previous message |
actually i presently dont have ORCAD or EAGLE to add in the schematic but i'll try to explain it.
C of L14F1 to +6v, base open for light, E to B of 2N2222A. E of 2n2222 gnded. C of 2n2222 to junction of R=1k and C=.1uF and to pin 2 of CA3140 through 1k. pin 3 of CA3140 to a potential divider of 1k and 1k and c=.1uF through 10k. o/p pin 6 of this goes to p1.0 of 89c2051.p1.1 of uc is maintained at nearly 3volts and display is driven through pin 11and pin 14 to 19 of 2051. |
| Topic | Author | Date |
| tachometer | 01/01/70 00:00 | |
| schematic, please | 01/01/70 00:00 | |
| Datasheet? | 01/01/70 00:00 | |
| reply to tachometer | 01/01/70 00:00 | |
| Resistor to processor too. | 01/01/70 00:00 | |
| the schematic is | 01/01/70 00:00 | |
| Limitation of base current to 2N2222? | 01/01/70 00:00 | |
| in effect | 01/01/70 00:00 | |
| another option | 01/01/70 00:00 | |
| What is your part in this assignment? | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
| Don't panic | 01/01/70 00:00 | |
| RE: dont have enough knowledge on microcontrollers | 01/01/70 00:00 | |
| CODE | 01/01/70 00:00 | |
| expecting a reply now | 01/01/70 00:00 | |
| Not BCD! | 01/01/70 00:00 | |
| how to solve? | 01/01/70 00:00 | |
| your task | 01/01/70 00:00 | |
| trying!! | 01/01/70 00:00 | |
| not found !!!! | 01/01/70 00:00 | |
| Trivial solution: compare/subtract | 01/01/70 00:00 | |
| thanks a lot!!! | 01/01/70 00:00 | |
| google or paper and pen | 01/01/70 00:00 | |
| something weird | 01/01/70 00:00 | |
| treading dangerous waters | 01/01/70 00:00 | |
Nothing weird | 01/01/70 00:00 |