This ultrasonic dog repeller circuit will chase away angry dogs. It is build with the all known 555 circuit, a buzzer and a little ferrite transformator. The ultrasonic frequency must be set with a ...
HIS INJURIES THIS AFTERNOON. NEW TONIGHT A ROYAL PALM BEACH WOMAN HAS BEEN ARRESTED AFTER SHE ALLEGEDLY PLACED ULTRASONIC DOG REPELLER MACHINES TOWARDS HOMES WITH DOGS. OUR SOOJI NAM IS LIVE WITH ...
When we hear the word “Ultrasonic” we often refer it to bats and dolphins communication. Technically, “Ultrasonic” applies to sound that is anything above the frequencies of audible sound, and ...
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