Make dog repeller


21-11-2010  · Ingevoegde video  · Tired of dog misbehaving...I am searching for a core technology to amplify and shoot via a hand held "sound gun"

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. T

11-4-2009  · Ingevoegde video  · DOG CHASER - DOG (AND CAT) REPELLER Depending on the size, biting dogs may cause big injuries with serious consequences, even eternal disfigurement ...

Preventing squirrels from invading your loft or roof space, or outside in the garden, can be made a lot easier using an electronic squirrel repellent. Fending off squirrels is not easy. They are resourceful creatures and quite intelligent. They seem to love solving puzzles and will find all kinds of ingenious ways of getting to a bird feeder, for example.

Our favorite bit of kit is the T3-R Triple High Impact Mice , Rat and Rodent Repeller unit. You can pick it up for under $50 if you shop around. Now, that may seem a lot to fork out, just to ward off squirrels and rodents, but this device will work for a long time, keeping away the next generation of squirrels, then the generation after that, and so on.

The T3-R Triple High Impact Squirrel Repeller is backed by more than fifteen years of testing and perfecting by the company. It’s more powerful than its competitors, which means it can cover a greater area – 6,000 square feet, in fact. Ultrasonic sound is emitted from three different speakers, each one doing a specific job.

Kind of new at this. The sk and sl 100 transistors? IS there a part number or other Identification? I can’t find anything by those numbers.

Hello, Im an norwegian engineer-student, and I am having your circuit as a project, both making and attempting to explain it. Making it wont be that much of a problem, but understanding it is a little more tricky. I wondered if you could explain a little bit how/why you have used 4 transistors, for example, and why this circuit will work the way it does.

Hi This is called bridged push pull output. This circuit will provide 4 times the normal 2 transistor push pull output connecting through a coupling capacitor. IC 4047 is an oscillator whose frequency is set by R1 & C1. The complimentary output of the IC which is available on pin no 10 & 11 are fed to the bridged output circuit. Since the frequency used for repelling mosquitoes is in the ultrasonic range a piezo transducer, which respond to Ultrasonic sound better is used for producing sound, instead of standard loud speaker.

schleif.bcu.cc

21-11-2010  · Ingevoegde video  · Tired of dog misbehaving...I am searching for a core technology to amplify and shoot via a hand held "sound gun"

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. T

11-4-2009  · Ingevoegde video  · DOG CHASER - DOG (AND CAT) REPELLER Depending on the size, biting dogs may cause big injuries with serious consequences, even eternal disfigurement ...

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Make dog repeller
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