| ??? 04/01/08 15:36 Read: times |
#152839 - Links Responding to: ???'s previous message |
http://www.8052.com/forum/read.phtml?id=60081
http://www.8052.com/forum/read.phtml?id=60207 http://www.8052.com/forum/read.phtml?id=63634 http://www.8052.com/forum/read.phtml?id=77065 15mA x 15mA x 8Ohm is only 1.8mW, which isn't very loud. Also, 15mA is the maxixum current a port pin can SINK. The source current is much less. Kai |
| Topic | Author | Date |
| driving a speaker | 01/01/70 00:00 | |
| Amplifier needed | 01/01/70 00:00 | |
| 8051 Output port drive current | 01/01/70 00:00 | |
| current | 01/01/70 00:00 | |
| Links | 01/01/70 00:00 | |
| links | 01/01/70 00:00 | |
| Think about it! | 01/01/70 00:00 | |
| speaker | 01/01/70 00:00 | |
| ... or higher-impedance speaker | 01/01/70 00:00 | |
| impedance | 01/01/70 00:00 | |
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| impedance answer | 01/01/70 00:00 | |
| piezo | 01/01/70 00:00 | |
| The reason you're in school is to learn | 01/01/70 00:00 | |
| Library? | 01/01/70 00:00 | |
| research | 01/01/70 00:00 | |
You can use a transistor, but if you read ... | 01/01/70 00:00 |