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
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October 31, 2018
3 Electronic Siren circuits using transistors
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.
August 14, 2017
AC 220V siren circuit using transistors
This AC 220V siren circuit is a simple siren that use 220V AC as power supply. It is small size and use a piezo speaker cause use low power and saving.
June 16, 2017
UM3561 Sound generator circuits
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
June 15, 2017
Make Police siren circuit using 555 timer, transistors and OP-Amp
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 [...]
May 17, 2017
Cheap siren with nand gate IC
This is a siren sound generator circuit. Which is less expensive and can create simple. The IC1 is using CD4011 (Digital Nand Gate) and the IC2 is CD4046. Operation of…
May 13, 2017
555 Siren sound Generator
Suitable for beginners. Build a simple, but widely applied.
August 8, 2013
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