KK2418 ringer equivalent, telephone tone ringer.
of any voltage highe r than maximum rated voltages to this high-impedance ci rcuit. For proper operat ion, V IN and VOUT.
The KK2418 tone ringer derives its power supply by rectifying the AC ringing signal. It uses this power to activate two tone generators. The two tone frequencies generated are switched by internal oscillator in a fast sequence and made audible across.
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