Siren Circuits
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This is powerful siren circuit diagram. You can get lots of supports from this circuit because you can use this circuit for your alarm circuit then you will be able to get maximum results... -
simple siren or alarm using MC1458 dual op-amp and audio power amplifier LM380 circuit diagram with descriptions various siren, doorbell, alarm circuit with parts list... -
This siren alarm circuit diagram is based on a specialized IC UM3561, which is a low power CMOS LSI specially designed for this type of applications. The UM3561 contains all needed parts ( oscillator, selector circuits, programmed mask ROM ) to simulate.... -
3904 3906 Siren Circuit. The circuit produces a wailing siren sound when the switch is turned on.... -
Since this is a DC circuit, how and where do the + vs. the - wires physically get connected to the circuit Where exactly do I connect all the grounds to I understand all the places where the schematic calls for a connection to the power source. I`m just.... -
A very loud sweeping siren type audio sound generator powered by 3v. The circuit uses a LTC1799 precision frequency generator from Linear Technology. A 74HC14 hex Schmitt trigger from Texas Instruments is also used to perform several other functions. One.... -
The sound produced imitates the rise and fall of an American police siren. When first switched on the 10u capacitors is discharged and both transistors are off. When the push button switch is pressed to 10u capacitor will charge via the 22k resistor. This.... -
A lot of electronic circuits using NE555 timer IC Here is the circuit diagram of a police siren based on NE55 timer IC. The circuit uses two NE555 timers ICs and every of them are wired as astable multivibrators. The circuit will be powered from something.... -
In this tutorial you will build a wailing siren that plays a tone that increases and decreases in pitch. The circuit uses two 555 ICs and a loudspeaker.... -
A two transistor electronic siren breadboard circuit that produces an audible rising pitch on a loudspeaker. Tutorial and circuit for beginners in electronics.... -
THE circuit shown provides a smooth, piercing, wailing siren with a minimum of components. Not only this, but three spare gates of hex inverter IC1 remain, which means that a true cacophony could be created by running two sirens off the same i. c. Gate IC1a.... -
The circuit was designed to create an electronic siren to provide a scheme for producing an alert sound in emergency cases or any circumstances that requires its usage. 4011 a quad 2-input NAND gate integrated circuit, generally characterized by small.... -
The circuit described here can create three different US-style` siren sounds: police, ambulance and fire engine. The desired sound can be selected using switch S1. The circuit can be used in toys (such as model vehicles), as part of an alarm system, and in.... -
When the switch is pressed C3 charges up through R4 with a time constant of 0. 47 seconds and when the switch is released C3 begins a slower discharge through R7 and R3 with a time constant of about 5 seconds. The op amp 358 used in this project is set up as.... -
A robber will not stay anywhere with an ear-piercing sound as he cannot hear if someone is approaching. It`s the best deterrent you can get. The "F" contact on the piezo is "feedback" and is not needed in this circuit... -
Here`s a simple light activated police siren using light dependent resistor and NE555 timer. Before you make this project, I would recommend you to make the following projects. The 555 timer with R1=68K(say timer1) is configured in slow astable mode and the.... -
A complementary transistor pair (Q2 & Q3) is wired as a high efficiency oscillator, directly driving the loudspeaker. Q1 ensures a full charge of C2 when power is applied to the circuit. Pressing on P1, C2 gradually discharges through R8: the circuit starts.... -
This circuit is intended for children fun, and is suitable to be installed on bicycles, battery powered cars and motorcycles, but also in models and other games.... -
This circuit is intended for children fun, and can be installed on bicycles, battery powered cars and motorcycles, but also on models and various games and toys. With SW1 positioned as shown in the circuit diagram, the typical dual-tone sound of Police or.... -
In Greek mythology, a siren was a demonic being (half bird, half woman). Later on this idea was transformed in art into a mermaid: a combination of a fish and a woman. Mechanical and electromechanical versions were invented even later, and electronic models....
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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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