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Thank you.
As friends said and after some Q&A, I think ultrasonic is not the only and best way for repelling the pigeons. As you see in the picture which I have taken, The trouble is that the muster points of the pigeons are not reachable for us!!!:cry:
I took a picture from a shed which the pigeons nested in it. The arrows show the muster points of pigeons which are almost unreachable for us. For this reason we can use only ultrasonic as a repeller.
Thank you dear.
First I should say that the birds' nests is 10m above the surface and due to the special shape of the pump's shelter, I can't reach there to place anything such as plastic snake or spikes.
For this reason,I think the only way is the same ultrasonic repeller.
I installed the...
Finally I could to upload the image.
I installed the box and the detector has shown the good ultrasonic spectra. but the output wave has very low intensity.
How I can increase the output power of the repeller?
I can't upload image. instead, below is the link of top view of the ultrasonic repeller.
but the output power was too weak. how I can increase the output power and intensity of the output wave?
https://s6.uupload.ir/files/1669654301352_6j8q.jpg
you are right Tony.
you are right Tony. thank you for your valuable answer.
some people say kill the pigeons. but in my opinion, killing the animals is not the final way. also I can not do this not at all.
I am searching to find the most effective for repelling the birds...
😵💫
Special thanks to all you dear experts for your valuable replies.
I agree with you. I think a Pest Repeller circuit does not compeletly satisfy the desired purposes. But a machanism must be used to repel out birds away from instrumentation devices.
Their wastes damage transmitters and...
hi dears.
I have received 4 used ultrasonic-based pest repellers which should be installed for repelling wild pigeons from an oil field. But I don't know they work or not! are they healthy or not?
my question is how to detect the wave comes from their speakers.
thanks.
the hysteresis is a voltage-band defined in op-amp comparators which determines the output level based on the non-inverting input. if you won't to use hysteresis, the output will go to chattering and will be unstable. because the input is always under changes and noises.
LOL
the discussions are focused on hystersis for 10 days and now you find it out?:laugh:
the probelm has been fixed and the feedback network provides about 1C HYSTERSIS. (330K/1K). the thermostat is now ON and keeps the temperature bteween 37-38C accurately.moreover the relay chattering has...
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