A voltage comparator is a device that compares the voltage at the two inputs and develops an output based on the inputs. A high output when the plus input is greater than the minus input or a low output when the plus input is less than the minus input. A comparator is a component that compares the two analog inputs and outputs a digital signal tha
Click here to download the full size of the above Circuit.
t represents which input signal is greater than the other. An acceptable analog input depends on the actual voltage comparator used and the voltage used to power it. The digital output can be almost any digital signal and again depends on the comparator and the voltage used to power it. However; the outputs might include an Open Drain, Open Collector, TTL Totem Pole, LVDS, or Push-Pull, to list the most common. So even though the input is analog, the output could directly interface with many of the TTL logic families. Although the voltage comparator is not an operational amplifier, an application might still use the terms inverting and non-inverting. An inverting voltage comparator would apply a signal to the minus input while the plus terminal is fixed to a voltage reference. The non-inverting voltage comparator would apply the signal to the plus input while the minus terminal is fixed to a voltage reference. So the terms apply to an input being above a reference and than having the output switch either high [non-inverting] or low [inverting]. A zero crossing detector may be produced by applying the input to the plus terminal and grounding the minus terminal. The output goes high when the input goes above the ground reference. Hysteresis may be added to a voltage comparator by applying feedback. The configuration begins to appear like an operational amplifier circuit, but the circuit is still a comparator and will never...
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.....
characters left: