quartz crystal speakers - Page 3 - Electronic Circuits Projects Diagrams Free

audioguru · 28th January 2006, 04:43 AM

I think to make a distance ranging system you need an object that can reflect ultrasonic waves. Then you "ping, ping, ping" the ultrasonic sender and enable the receiver in between pings to detect the reflections.
You need an ultrasonic oscillator and power amplifier that is gated by pulsing oscillator. The receiver is gated on by the pulsing oscillator inverted.

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28th January 2006, 04:43 AM	(permalink)
audioguru	I think to make a distance ranging system you need an object that can reflect ultrasonic waves. Then you "ping, ping, ping" the ultrasonic sender and enable the receiver in between pings to detect the reflections. You need an ultrasonic oscillator and power amplifier that is gated by pulsing oscillator. The receiver is gated on by the pulsing oscillator inverted. __________________ Uncle $crooge