A Float Switch is a device which is typically used to measure the depth/level of liquid in a container. As the water rises and reaches the level of the float switch, it begins to float going from the vertical to the horizontal. This closes an internal switch which can then be used to turn on/off a pump, alarm, relay. Pictured above is a submersi
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ble water pump with an integrated float switch (the red part). If a pump is run dry, it will quickly burn out - therefore, all good quality pumps are sold with a built-in float switch to automatically switch off pumping when there is no more water to pump. A float switch can be as simple as a mercury tilt switch fitted into watertight floatable case. Since mercury is very toxic, a far more common alternative is to use a reed switch which is triggered by a small float-mounted magnet. Pictured above is a typical automotive-grade float switch (available from the REUK Shop ). This unit is supplied with a baffle which greatly reduces rapid multiswitching* caused by surface turbulence without the need for complicated electronics. This particular float switch can manage a switching current of up to 1. 5 Amps - plenty to trigger a relay or a light/alarm. Typically float switch switching currents range from 0. 5 to 2 Amps. Click here to search eBay for Float Switch - there is usually a good selection available mostly marketed for use with bilge pumps, but which can be used in many other applications. Float switches can be set up to sense either rising or falling water levels - rising water to measure when a container is full or water has reached a certain maximum level, falling water to measure when a container is empty or has reached a certain minimum level. Therefore, float switches have many uses - particularly in renewable...
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.....
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