Programmable 4-State Tone Generator By IC Dual Timer 556
Circuit Programmable 4-State Tone Generator By IC Dual Timer 556
Change the value C1 and C4 for change the sound.
fix give
L = GND
H = +5V to +15V (VDD)
Mode Select
B A output
L L Two-Tone
L H Steady
H L Burst
H H Metronone
See the detail adds in circuit picture.
Source : Programmable 4-State Tone Generator By IC Dual Timer 556
Other Link
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3-State Tone Source By IC Dual Timer 556
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