Ultrasonic insect repellent circuit
Posted on Dec 11, 2010
Related Circuits
New Circuits
-
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
.
The circuit diagram of the Lie Detector is shown above. It consists of three transistors (TR1 to...
Here is a circuit of a remote control unit which makes use of the radio frequency signals to...
Have you ever attempted to copy a commercially produced video only to end up with a distorted and...
In a single difference amplifier configuration, the AM-427 exhibits excellent common-mode...
This RF converter converts amateur TV signals in the 420- to 450-MHz region to VHF channel 3 or...
Using only one IC and six passive components, this pulse generator has a frequency range of 400...
Sometimes it is desired to power a circuit from a battery where the required supply voltage lies...
Incremental-rotation or linear encoders are very common, but normally they do not provide a...
Attach a 12V fan to this circuit which draws 70mA (0. 007A), so the circuit must have at least...
Free-energy" or "G-solar energy" as solar infrared radiation energy stored in the gravitational...
With 4 batteries (as for instance in the flashlight) it is possible to produce per hour hydrogen...
Battery Eliminators are the circuits, which creating DC power supply from AC Mains. Basically...
Combine the SATL and SAVL together. The schematic was updated with the voltage sensing circuit, I...
This circuit lets an external 12V SLA battery power a camcorder which normally has an inbuilt 7....
Having two sets of PWM signal generating circuit within NCP5201 chip, a set of output pins and the
A. B, C for big power split phase I, A + B'C 'Rang generator phase line, A-A' indole...
LM4610 is a US company following the LM1036 NS after the launch of a new class of high-end HIFI...
As shown in FIG measuring temperature alarm circuit to the Treasury. The device consists of...
Circuit principle: OV9650 processor interfaces include three parts SCCB interface, data output...
Current leakage protection is currently the most used and best leakage protection device. Current...
characters left: