| ??? 01/14/03 09:01 Read: times |
#36389 - RE: mC -> DTMF -> DAA circuit |
I dunno about DAA but you can get -5 volts in a digital circuit from a voltage inverter such as those found on the Dallas website for example.
YYou can make a voltage inverter yourself with a couple of capcitors,a diode and a npn transistor |
| Topic | Author | Date |
| mC -> DTMF -> DAA circuit | 01/01/70 00:00 | |
| RE: mC -> DTMF -> DAA circuit | 01/01/70 00:00 | |
| RE: mC -> DTMF -> DAA circuit | 01/01/70 00:00 | |
| RE: mC -> DTMF -> DAA circuit | 01/01/70 00:00 | |
| RE: mC -> DTMF -> DAA circuit | 01/01/70 00:00 | |
| RE: mC -> DTMF -> DAA circuit | 01/01/70 00:00 | |
| Please clearly state the purpose | 01/01/70 00:00 | |
| RE: Please clearly state the purpose | 01/01/70 00:00 | |
| RE: Please clearly state the purpose | 01/01/70 00:00 | |
| RE: Please clearly state the purpose | 01/01/70 00:00 | |
RE: mC -> DTMF -> DAA circuit | 01/01/70 00:00 |