Timeline for 40 kHz ultrasonic transducer making an audible sound
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Oct 24, 2015 at 11:19 | history | edited | Ace | CC BY-SA 3.0 |
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| Oct 24, 2015 at 11:18 | vote | accept | Ace | ||
| Oct 18, 2015 at 15:18 | answer | added | Andy aka | timeline score: 2 | |
| Oct 18, 2015 at 14:09 | comment | added | Andy aka | What's the pulse repetition rate? | |
| Oct 18, 2015 at 13:56 | comment | added | got trolled too much this week | In general the design calculations for a phase-shift oscillator assume the filter stages don't load each other. Which might be far from reality here given that you use 100-ohm resistors. And what kind of caps are you using? | |
| Oct 18, 2015 at 13:48 | comment | added | got trolled too much this week | Have you tried FFTing the output? Spectrum analyzer etc. | |
| Oct 18, 2015 at 13:34 | comment | added | Ace | @venny I added the schematic. | |
| Oct 18, 2015 at 13:33 | history | edited | Ace | CC BY-SA 3.0 |
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| Oct 18, 2015 at 13:23 | history | edited | Ace | CC BY-SA 3.0 |
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| Oct 18, 2015 at 13:15 | comment | added | venny | Subharmonic oscillation, the nightmare of a power supply designer. I would say it has something to do with passband of the oscillator feedback loop. Do you have the driver's schematic? | |
| Oct 18, 2015 at 13:10 | history | asked | Ace | CC BY-SA 3.0 |