Friends take an interest try build Tone Burst Generator be simple is. Try this circuit like sure because use IC 7555 , highly popular again. Assure that not sure difficult press the the secretariat of the senate S1 a loudspeaker will utter to come out immediately. When liberate S1 already the sound may loud again next many second. The C2 and R4 control time drag. The C1 control the frequency.( Use the integrated circuit IC 7555 use power source a little more IC 555 very )The detail is other see in the circuit request have fun Tone Burst Generator please sir
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