| ??? 03/31/07 20:43 Modified: 03/31/07 20:44 Read: times |
#136341 - Numerous options ... Responding to: ???'s previous message |
The easiest way, probably, is to put an inverting TTL open-collector driver (7416) between the port pin and the low-side of the buzzer, with its high side connected to the supply. Then all you need is an appropriate resistor (try 150 ohms) in series with the low side of the buzzer, to limit the current, which, in turn, will limit the volume.
RE |
| Topic | Author | Date |
| how to use a simple buzzer? | 01/01/70 00:00 | |
| Try it ? | 01/01/70 00:00 | |
| that worked, but... | 01/01/70 00:00 | |
| current | 01/01/70 00:00 | |
| When you've found the current requirement... | 01/01/70 00:00 | |
| Buzzer connections | 01/01/70 00:00 | |
| Drivers | 01/01/70 00:00 | |
| will try it and get back... | 01/01/70 00:00 | |
| If the buzzer draws lots of current... | 01/01/70 00:00 | |
| Quote | 01/01/70 00:00 | |
| Correct | 01/01/70 00:00 | |
| ok... | 01/01/70 00:00 | |
| Numerous options ... | 01/01/70 00:00 | |
| only have 5V supply | 01/01/70 00:00 | |
| it might prove interesting ... | 01/01/70 00:00 | |
| Because you took a NPN instead of PNP... | 01/01/70 00:00 | |
| will try this | 01/01/70 00:00 | |
| kai | 01/01/70 00:00 | |
| I would use a PNP | 01/01/70 00:00 | |
| Do yourself a favor ... try it as he suggests! | 01/01/70 00:00 | |
| we all did some such thing ONCE, I believe | 01/01/70 00:00 | |
| hmmm.... | 01/01/70 00:00 | |
I don't know why,... | 01/01/70 00:00 |