I just thought I would use 25 kHz because I need ultrasound to penetrate wood
Ultra sound doesn't penetrate wood.
Hit it with a square wave at 40KHz, it is going to go off at that rate anyway no matter what you hit it with.
I just thought I would use 25 kHz because I need ultrasound to penetrate wood
Ultra sound doesn't penetrate wood.
Hit it with a square wave at 40KHz, it is going to go off at that rate anyway no matter what you hit it with.