Rats repellent circuit is one application of electronic circuit in everyday life.Now with a series of electronics rat repellent it will be one alternative to overcome various problems caused by rats. This tool is an environmentally friendly tool, this tool can also be used as a distributor of hobbies and tinkering with electronics circuits. The electronic components needed to make rat repellent are not much, cheap and easy to find in electronics stores. The circuit can be made on a PCB.
Here is the picture of the circuit scheme :
Component :
R1=1K
R2,R3=15K
C1=1nF
C2=1uF/16V
C3=10nF
C4=220nF
C5=1000uF/16V
D1-D4=1N4001
IC1=555
TR1=Trafo 6V/200mA
SP1=Tweeter
The mouse electronics circuit is simply an oscillator that emits ultrasonic waves in the 20 - 40 KHz frequency range. The resulting ultrasonic waves will not be heard in our ears but will be very disturbing to the ears of mice. For us there is no effect, but the effects experienced by rats will feel very powerful.
Use loudspeaker from peizo electric or tweeter shape speakers to make ultrasonic frequency more effective. Electronic rat repellent is effective for a room with a maximum of 200 m² from the exact placement. Can be placed for example in the upper corner of the room the frequency can spread throughout the room without a hitch. Turn on continuously to keep the mice do not come again, do not worry about the consumption of electricity because the electricity required is low enough.