Repelente de mosquitos 555, 4017, 4011

This is Circuit MOSQUITO REPELLANT.
By High Frequency Sound.
Circuit MOSQUITO REPELLANT by 555, 4017, 4011
Use a electronics part ,easy to find and low cost.
To See Circuit, have IC 555, 4017, 4011 and BC337,BC327.
Output Piezo Speaker.
Volt suppy +12V.
Easy to build see PCB:
pcb MOSQUITO REPELLANT by 555, 4017, 4011