This circuit produces a loud audio tone by a small loudspeaker. Power supply voltage ranges from 5 to 12 V and the transistor must be mounted on a heatsink. P1 adjusts the frequency. Frequency also depends on C1, R1 and R2.
This circuit produces a loud audio tone by a small loudspeaker. Power supply voltage ranges from 5 to 12 V and the transistor must be mounted on a heatsink. P1 adjusts the frequency. Frequency also depends on C1, R1 and R2.
