Recent content by Dimitar63

Okay boys, first I want to thank you for your replies. And.. I start thinking, what if I use a quartz crystal as a resonator? Is it possible quartz to produce a voltage and power small buzzer? ultrasound waves --> quartz crystal --> small buzzer

Hi Physics, I have an idea but before i start. I must know am I right. Is it possible? We have a small room with two objects. The first object is a producer of sound waves out of the human hearing range. This object sends ultra sound waves to the second object. The second object start to...

Thanks for your answer, Scott! How about small peace of "absorb sound material" (used in record studios) and ultrasound between 20 kHz and 40 kHz. Do you think it will work ?

Hi, I wonder is it possible sound wave heat material that high that the material goes up in flames? Or what other type of frequency can make some materials burn?

How about adding small transistor. It might help right?

Thank you for your reply. Do you think Renata 317 Skin 5.80x1.65mm /1.55V package of four can do the same work.

Hi all, I work on something.. its alarm tag. I found buzzer which i want to use in simple electric circuit. Components are the buzzer, and a battery. The tag must work minimum 5 min. The problem is.. I can not find battery small and powerful enough at the same time. Battery diagonal must be 3...