The real usefulness of the SR latch comes during input switch transitions. Let`s assume the input switch is a break-before-make and the switch starts in the up position. From the prior analysis, the inputs values when the switch is up are low, low, high, high, and the output is high. As the switch is toggled, it breaks the first input, changing it
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to high, low, high, high. Those values can be used to determine the output value. This means that even if the input switch signal bounces multiple times between low and high signals as it breaks the connection, the debounce output remains steady. Because the debounce output is steady, the counter doesn`t increment spuriously. Not surprisingly, the same steadiness occurs when the input switch starts in the down position and starts to break contact as it transitions up. The output remains low. While this is exactly what we want, this also explains why a single-throw switch or pushbutton won`t work. This circuit keeps the output in a steady state when only one input is changing back and forth. Pushbuttons and single-throw switches only change one input. Double-throw switches provide more information. By requiring two inputs to change states, not just one, you can ignore all errors generated by either input at a given time. You don`t care how long it takes for the errors (bouncing) to go away, but you`re ready to change states again right away if necessary. Software debouncing of pushbuttons relies on time as the second input. That is, the software assumes it takes a certain amount of time for the switch to settle down before more input can be reliably accepted. This slows down the maximum switching rate and the software method is still vulnerable to long bounces. In the previous two examples, it was assumed that the switch is...
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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