Circuit for Siren Police Car or Ambulance, Indeed we can buy ready-made sirens in electronics stores. There are sirens 3 sound models, 6 sirens sound, and siren 9 sounds. So one siren can sow different types of sounds. The price is also very diverse depending on the features offered.
But there's nothing wrong if we try to make their own siren using some simple electronic components that can easily be encountered in the market. Counting is more cost-effective than buying ready-made sirens, as well as to hone our skills in becoming an electronics technician.
Actually to make another police siren or siren is not difficult because the circuit is simple and does not require many components. The series of police car sirens that we will share this using 3 volt DC voltage, 6 volts, or 9 volts that can be directly obtained from batteries or motorcycle or car batteries.
This police car siren circuit uses two transistors. The first transistor is a 2N3904 type transistor and a TIP30C type transistor. As for the output using 8 ohm speakers. Okay just follow the schematic drawings of the series complete with a list of required components.
Component:
Resistor 51k Ohm x2
Resistor 1,5k Ohm x2
Capacitor 0,1uf/25V
Capacitor 47uf/25V
Transistor 2N3904
Transistor TIP30C
Speaker 8 Ohm
Well, that was a series of police car sirens that could be made with simple electro components. You can modify the circuit or component to get the desired results both in terms of volume and type of sound. Hopefully useful and bye.