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:: Home » Sirens

Sirens

High power siren circuit using CD40106 and TIP31, small and easy

Last Updated on: June 14, 2022 by Apichet Garaipoom
High power siren circuit using CD40106

This is High power siren circuit with small PCB size, using CD40106 and four transistor TIP31-TIP32 increase current to horn speaker 20W, 4-8ohm. , and

Categories Sound Generator Tags CD40106, Sirens, TIP31 4 Comments

6 Simple transistor | police | ambulance Siren (audio alarm) circuits

Last Updated on: April 17, 2022 by Apichet Garaipoom
Simple transistor Police Ambulance Siren circuit

Today I would like to introduce the simple and economical simple siren circuits. It is suitable for beginners. My son will gradually build this circuit onto the PCB layout. Look at below! 4 Circuits.

Categories Sound Generator Tags Astable multivibrator, 2N2222, 2N3906, Sirens 22 Comments

UM3561 Sound effect generator circuits

Last Updated on: July 12, 2021 by Apichet Garaipoom
UM3561 Sound effect generator

Here is The 4 Sound effects generator using UM3561 and a few parts only. It can make siren, Ambulance sirens, Police car sirens, Fire truck siren and Space

Categories Sound Generator, Oscillator circuits Tags Tone Generator, Sound effects, Sirens 5 Comments

Make Police siren Generator circuits using 555 timer

Last Updated on: June 20, 2022 by Apichet Garaipoom
Make Police siren Generator circuits using 555 timer

This is police siren circuit using 555 IC, with PCB layout, using 2 IC-555 as frequency oscillators and transistor to drive sound to the speaker […]

Categories Sound Generator, 555 Timer Tags Alarm sounds, Sirens 13 Comments

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