Destroyer Whooper using transistors


Whooper2 Schematic

Parts List:R1,R4 = 6K8 C1,C4 = 100uF,16V electrolyticR2,R9 = 10K C2,C3 = 0.05uF, ceramic R3 = 2K2 R5,R7 = 1K B1 = 9V Alkaline Battery R6 = 100 ohm SPKR1 = Loudspeaker, 8 ohmR8 = 22KS1 = SPST switchQ1,Q3,Q4,Q5 = 2N3904 Q2 = 2N3906	A complete KIT plus Printed Circuit Board will be available soon. Note that the printed circuit board is only available with the kit.

Whooper Alarm:
Exchange R8 for a higher pitch.Experiment with R8, C1, or combination thereoff.

Copyright:
This article is © EKI (Electronics Kits International, Inc. (no longer in business))


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