Monday Kids Variable Tone Siren Electronic Circuit Experiment Kit - NE555 Components Soldering DIY Assembly Training

This product is a Variable Tone Siren Electronic Circuit Experiment Kit designed for learning electronic technology and DIY projects. The kit includes all necessary electronic components and circuit board, allowing users to assemble and solder a complete variable tone siren circuit. It is ideal for students for electronic skills training and for electronic enthusiasts for DIY projects.

Product Parameters:

Power Supply Voltage: 6~9V (DC Power)
Board Size: 33 x 24mm
Function Explanation: The circuit uses two NE555 timer integrated circuits to create a variable tone siren that produces a "woo-woo" sound. The kit includes a complete set of components, circuit board, circuit diagram, and assembly instructions, making it fun and engaging! Perfect for beginners to learn.

Circuit Principle: The variable tone siren consists of two 555 integrated circuits. U1's oscillation frequency is about 1 second, and the oscillation signal is output from pin 3 of U1, driving the LED to create a brightness change. Simultaneously, the oscillation signal from pin 3 of U1, through R3, controls a sawtooth voltage U2. U2's frequency is determined by resistor R4 and capacitor C2. When U2 is high, it outputs a high level, driving R4 and C2 to determine the oscillation frequency. This oscillation signal is amplified by Q1 to drive the speaker, producing a siren sound.

Product Features:

Educational Value: Suitable for students to conduct electronic skills training, helping them grasp basic knowledge of electronic components and soldering techniques.
DIY Project: Perfect for electronic enthusiasts to carry out DIY projects, enhancing hands-on skills and innovative thinking.
High-Quality Components: Uses high-quality electronic components to ensure circuit stability and reliability.
Detailed Manual: Comes with a detailed assembly and soldering manual to help users complete the project smoothly.
Practical Function: The finished variable tone siren can be used for practical applications such as alarm prompts.

Combination of Education and Entertainment: Students can learn electronic knowledge through hands-on creation, increasing their interest in learning.
Easy Assembly: Detailed manual and high-quality components make the assembly process simple and easy to understand.

Usage Instructions:

Preparation: Gather soldering tools (soldering iron, solder wire, etc.) and power supply.
Assemble Circuit: Follow the manual to solder the electronic components onto the circuit board.
Connect Power: Connect the circuit board to a 6~9V DC power supply.
Test Function: Test the variable tone siren's functionality by inputting a signal to ensure it works properly.
Circuit Diagram: A detailed circuit diagram is provided with the kit. Users can follow the circuit diagram to assemble and solder, ensuring the accuracy of the circuit.

Purchase Information:

Applicable Range: The kit is suitable for students' electronic skills training and electronic enthusiasts' DIY projects.