Simple Police Car Siren using 9013, 9012

Simple Police Car Siren using 9013, 9012

Simple Police Car Siren using 9013, 9012

R1 ………….. 27K ohm
R2 ………….. 68K ohm
R3 ………….. 56K ohm
R4 ………….. 470 ohm
C1 ………….. 50uF – 12V
C2 ………….. 0,018uF – 25V
TR1 …………. FCS9013
TR2 …………. FCS9012
S1 ………….. Push Switch

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