Automatic distress alarm kit control circuit
Posted on Nov 10, 2015
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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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Very simple and useful circuit for communication between two person. The Q1 is used to amplify...
After the 2-way active loudspeaker circuit, give a complete electronic section circuit of one...
Indicator was designed for displaying the peak level of small ac signals from a variety of...
A window detector is a specialized comparator circuit designed to detect the presence of a...
How many speaker attach with this amplifier and what is the what is the speaker Ohom and watt ...
Using this circuit you can convert the 12V dc in to the 220V Ac. In this circuit 4047 is use to...
This paper will guide you through how to do just that. We`ll review a simple computer system and...
I usually use an NPN Bipolar transistor to do the relay switching, mainly because my relays are...
The 4 data lines from the Keypad Interface go straight into the data inputs of the Holtek 9200B...
What do you do with those old 2-Meter FM rigs that don`t have any CTCSS tone capability Well, you...
There are actually very few electronic components necessary for this project as the PIC...
This design came about as a result of efforts to design a high stability reference which locked...
As shown in FIG variety of low-frequency waveform generating circuit. The circuit can...
BT9404 de-excitation type switch by the CJ4-S contactors and JT3-21/3-type electromagnetic...
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