Timeline for Piezo T/R switch
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 3, 2024 at 22:38 | comment | added | ali demir | So should i be able to measure echo on further distances like 20cm ? As i remember i also tried that but didnt get anything | |
| Jul 3, 2024 at 22:27 | comment | added | qrk | @alidemir If the range is 32 mm, as depicted in the oscillogram, you can't use 4 kHz (a number used in your previous post) as the wavelength is about 85 mm. Using a 40 kHz transducer, you may have a better chance if Q of the transducer is sufficiently low enough where the ringing has died down. At this range, you probably don't need much drive level, i.e., 5 V drive may be enough. You many need to put a resistor across the ceramic to lower the Q or use an acoustically absorbent backing to lower the Q. | |
| Jul 3, 2024 at 21:20 | history | edited | ali demir | CC BY-SA 4.0 | added 174 characters in body |
| Jul 3, 2024 at 21:02 | comment | added | ali demir | Do i have to drive the piezo at really high voltages ? I was trying to do with 5Vpp (arduino digitalwrite) | |
| Jul 3, 2024 at 20:56 | comment | added | Antonio51 | See this electronics.stackexchange.com/questions/667410/… | |
| Jul 3, 2024 at 20:37 | comment | added | Antonio51 | Yes, it can work ... Just add Tx and Rx. Sometimes, a transfo is also used ... | |
| Jul 3, 2024 at 20:10 | comment | added | ali demir | i dont have enough parameters to simulate the piezo | |
| Jul 3, 2024 at 20:07 | comment | added | Andy aka | Why don't you run the circuit through a simulation tool (like most EEs do these days)? | |
| Jul 3, 2024 at 19:35 | history | edited | ali demir | CC BY-SA 4.0 | added 189 characters in body |
| Jul 3, 2024 at 18:58 | history | asked | ali demir | CC BY-SA 4.0 |