Photoelectric control electric tracking toy vehicle circuit diagram

Published:2011/6/24 3:01:00 Author:Nicole | Keyword: photoelectric control, electric tracking toy vehicle | From:SeekIC

After 555 is triggered, in the period of temporary stability time, the high level which is outputed by 3 foot provides IC2 with work voltage. IC2 adopts analogue integrated circuit KD-5602, it contains didida general title sound, the music is about 10s. Once this chip obtains electricity and triggers, the general title sound will be performed, it is amplified by VT2, it drives loudspeaker to phonate. The typical work voltage of KD-5602 is +3V, so R4, DW steady voltage circuit are connected into circuit, 2CW51 provides +3V voltage. KD-5602's static power is tiny(Iab<1μA), the peripheral devices are few. R5, C5 are chip oscillator's external resistor capacitor components, the oscillation frequency or tone can be changed by adjusting RC time constant.



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