This be Basic Tone Generator by UJT Transistor 2N4891 numbers. By it s can give with small-sized loudspeaker s have a voice electric loud bell moderately. The value of C1 be valuable a little for enhance the speed in the package and disgorge to load. In each round (Cycle) that get be sound frequency at shine depart a loudspeaker. By can fine sound frequency get with R2 – 100K the value Resistance low tall frequency. But if the value is Resistance the tall low voice frequency. This circuit has can to develop next again. Request enjoy something sound electric bell this circuit please sir, be lucky.
This entry was posted on Tuesday, August 19th, 2008 at 11:00 am and is filed under Audio - Alarm.
