| ??? 01/14/03 09:09 Read: times |
#36391 - RE: mC -> DTMF -> DAA circuit |
One way to get -5 volts in a circuit for an opamp is to use a chip called the 7660. It will invert +5 to -5 volts. With small 10uF caps the resulting -5V supply should be good for 35 mA of load current.
Michael Karas |
| 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 |