This mosquito repelling circuit
is made around the IC 555. Here, the IC 555 is used an oscillator which
generates frequency in the range of 200Hz to 62KHz. This frequency can be
adjusted by using the preset R2 connected in the circuit.
PARTS LIST
IC:555
Loudspeaker or Earphone: 8E
Resistance: 220E,controls 1M and
5r
Capacitor: 0.1, 100MF,10V,0.005
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