Electronic Siren
Posted on Jun 9, 2012
New Circuits
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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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When the fan seized up in my source and I changed it to a type with much less noise, turned on my...
In recent years more and more, have a tendency ket demanded higher reimbursement structures with...
A simple 120 V: 24 V, center-tapped control transformer and four additional components can do...
The subwoofer is a subwoofer or a speaker to reproduce low frequencies, devotee of 20 Hz to 150...
I already have one project where arduino outputs audio signal to USB speakers via software...
A very simple low power AM FM radio receiver electronic projects can be designed using the TA8122...
This circuit is built around a 555 timer using very few components. Since the circuit is very...
This is a complete alarm system with 5 independent zones suitable for a small office or home...
In many projects use is made of alphanumeric LCDs that are driven internally by Hitachi`s...
Remote temperature measurements have to be linked by some sort of cable to the relevant test...
This is a compact, easy to build amplifier that uses one IC only but delivers 40 watts of audio...
An increasing number of appliances draw a very small current from the power supply. If you need...
The above shows my home-built digital clock. It uses Nixie-tubes for readout. In contrast to most...
AD654 voltage-frequency converter is a low cost, they can work at + 5 ~ + 36V single supply, can...
Dispenser (Aucma) temperature detection control circuit It shows the dispenser (Aucma)...
This circuit consists of a 2048 radio remote control transmitter and the corresponding wireless...
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