Rat and cockroach repeller circuit This circuit is a rat and cockroach repeller which use principle of sound waves or ultrasonic cause they annoyed so it escaped away. This is small and cheap because use transistor (no ICs) and... Mouse and Rat repellent circuit using astable multivibrator This circuit is Mouse and Rat repellent circuit using astable multivibrator which use principle of sound waves or ultrasonic cause they annoyed so it escaped away. This is small and cheap because use transistor (no ICs) and super loud since use large piezoelectric but use low current source. Simple Rat Repellent Circuit Making Easy Circuits This electronic rat repellent circuit really is easy as it simply works with a several unique variations of components. Therefore to suit your needs who may be presently studying, researching electronics, may make an effort to practice causes this circuit as it is regarded as less difficult for newbies. Electronic Mouse Repellent Circuit ElectroSchematics repellents This electronic mouse repellent circuit was designed because most people agree that rats and mice are not welcome in our houses, meantime some of us don’t want to hurt this tiny and “beautiful” creatures. Electronic Pest Repellent Circuit ElectroSchematics This electronic pest repellent generates powerful ultrasonic signals to repel pests. In addition to the ultrasonic frequency oscillator built with the CD4047 IC, separate push pull power amplifier (with 2N3055 or TIP31C) and transformer are used to boost ultrasonic signals. ️ TOP 8 Electronic and Ultrasonic Mouse Repellents in 2019 ... Rat Repellers for Cars Not only houses, attics, and basements, but also warm vehicles attract rats. They can easily get under the hood, gnaw through the wiring, damage expensive spare parts and leave their feces. An ultrasonic repeller will save you in this case. ElectroSmash ProCo Rat Analysis The Pro Co Rat is a distortion pedal by Pro Co Sound designed by Scott Burnham and Steve Kiraly in Kalamazoo, Michigan 1978. The original circuit and appearance suffered some changes over the different revisions but the tone remained the same. Ultrasonic Pest Repellers circuitlib Ultrasonic Pest Repellers. The circuit is simply a 555 timer IC connected as a squarewave generator. Its base frequency is approximately 45kHz, as determined by the values of R1, R2, and C1. The 45 kHz "carrier" is frequency modulated by a modified trapizoidal voltage waveform applied to pin 5 of the 555 timer. Insects and mouse repellent circuit using IC556 Insects and mouse repellent circuit using IC556. When voltage change cause frequency also change. And this frequency is changed all time because mouse, rat, bug,insects and various animal have ability to a different frequency response. When frequency is changed in range 22KHZ to 56KHZ, makes we can repel a lot of the type of animals. Electronic Mosquito Repellent Circuit Diagram using IC 555 Electronic Mosquito Repellent Circuit. But there are various animals and insects (including mosquitos) that could hear the ultrasound. Generally ultrasound in a range of 20 kHz to 40kHz is transmitted by male mosquitoes and received by female mosquitoes, however after breeding female mosquitoes tend to avoid male mosquitoes... 20000Hz Ultrasonic Mouse and Rat Repellent (11 1 2 Hours) 20000Hz Ultrasonic Mouse and Rat Repellent (11 1 2 Hours) Turn the volume all the way up and let this scare the mice or rats out of your house. You will need good loud speakers for this to work,... ALL IN ONE REPELLENT CIRCUIT :Insects, mosquito, lizards ... The ALL in one REPELLENT CIRCUIT mainly consisting of a 555 timer, Frequency determining network, and a buzzer. The 555(NE555) timer is wired here as an ASTABLE MULTIVIBRATOR, which will generate Square waves continuously upon the power supply of 12V. The output Voltage from pin3 of NE555 is given directly to a Buzzer by a COUPLING capacitor C2. Ultrasonic Pest Repellent Electronics DIY It is well know that pests like rats, mice etc are repelled by ultrasonic frequency in the range of 30 kHz to 50 kHz. Human beings can’t hear these high frequency sounds. Unfortunately, all pests do not react at the same ultrasonic frequency. While some pests get repelled at 35 kHz, some others get repelled at 38 to 40 kHz. Ultrasonic Rat Repellent best microcontroller projects Transducers of the Ultrasonic Rat Repellent Circuit The transducer 17 or transducers are connected by plugging into output jacks 136, all connected in parallel. The voltage available across the transducers 17, that is, at the jacks 136 is also used to maintain a constant output level for a single to a plurality of transducers 17. Attack Wave Mouse and Pest Repeller The unique circuit design of our repeller strikes the auditory and nervous systems of pests strongly. This specially designed function is effective in preventing rats, mice & other pests from producing immunity to a pre set single sweep rate. This is an improved design over conventional mouse & rat repellers.

rat repeller circuit Gallery


how to build an electronic mosquito repeller circuit

how to build an electronic mosquito repeller circuit

ultrasonic pest repellers

ultrasonic pest repellers

car interior lights delay circuit diagram

car interior lights delay circuit diagram

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