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The scheme is an ultrasonic mounting high power allows to draw his canine companion, issued the orders, but also to keep in check an aggressive dog.
The operating frequency is 40 KHz.
Each pulse emission is displayed by an LED.
Power is supplied at a voltage of 9 V.
Consumption is 250 mA


A final check implantation. components and the welds. Plug a 9V battery into the outlet.
By pressing the button, the ultrasonic whistle must operate immediately. However, the transmitted frequency is not audible to the human ear. Factors affecting the machine's action is the distance, direction, and duration of wheezing.

training in use:

To be effective, it must not aim to train the dog, less than three meters. It must guide the whistle at approximately 45 degrees from the axis of the dog.
Do not continually press the button but exercise brief pressures ertviron 2 to 3 seconds, and repeat.
This allows for a dialogue with the dog.

Use defense:

li should point the whistle to the dog, at a distance of one to two meters maximum, and carry on the push button, long pressures of about 10 seconds.
The deterrent effect of a dog attacking persists, and is very effective as ultrasound the assault, the baffle el overtake him.
It is held in respect.


By pressing the button, the LED lights, and the oscillator circuit formed by the transistors T1 and T2 is powered.
maintenance of the oscillations is obtained by ies capacitors C1, C3 and C4. The output controls the transistor T3, which modulates the transformer. The latter supplies the ultrasonic transducer, which restores the frequency signal of about 40KHz.

The assembly does not represent any difficulty.
The components are soldered closest to the printed circuit.
Start with the diode D, respecting the position of her ring.
Solder resistors and non-polarized capacitors.
Solder the transistors properly orienting the flat.
the transistor T1 is welded vertically. Its orientation is indicated by the part
black on the diagram, which indicates its metal face.
Solder the LED positioning it properly. The cathode which is marked on the circuit, corresponds either to the flat on the diode or in the shortest paste.
Solder the transformer. Its implantation is facilitated by the absence of the central pin in high school.
The transducer is soldered directly to the circuit, or connected to the latter by
two isolated small son at the points marked "TT".
Connect the push button at the points marked "BP", by small isolated son
Connect both son taking to stack points scored with + and -.


- 1 tour imrimé
- 1 battery for plug
- 1 button
- 1 transformer
- 1 transducer
- TIP 1 transistor 31 or equivalent TIP29
- 2 transistors 2N 2222 T2 - T3
- 1 LED
- 1 diode D IN 4148
- 1 1R power resistor (brown-black-gold) R4 = 1R2
- 1 33R resistance (orange-orange-black) R1
- 1 220R resistance (red-red-brown) R2
- 2 1KR resistors (brown-black-red) R5-R6
- 1 150 KR resistance (brown-green-yellow) R3
- 1 220 pF capacitor C1
- 1 nF capacitor C4 2.2
- 1 47 nF capacitor C3
- 1 MF capacitor C2 0.1
- welding
- wire

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