HT2820

Abstract: 32725 C 32725 3 machine gun sound generator HT2820E Bell Sound Generator circuit diagram door bell ic HT2821A tone generator ic CMOS LSI two sound generator
Contextual Info: HT2821 Dual Sound Generator Features • • • • • • • • Single power supply: 2.4V~3.3V Low standby current: 1µA Typ. at VDD=3V Auto power-off function Two sections triggered by 2 input keys Built-in envelope control circuit Minimum external components

ht2820

Abstract: door bell UM IC holtek sound gen HT282 3 machine gun sound generator
Contextual Info: HOLTEK r r HT2821 Dual Sound Generator Features • • • • • • • • Single power supply: 2.4V~3.3V Low stan db y current: l|iA Typ. a t V dd =3V Auto power-off function Two sections triggered by 2 in pu t keys Built-in envelope control circuit

TRANSISTOR C 32725 w

Abstract: ht2820 OSC21 100C HT2821 HT2821A circuit of piezo in LED flash door bell ic C 32725 transistor 8050
Contextual Info: HOLTEK r r HT2821 Dual Sound Generator Features • • • • • • • • Single power supply: 2.4V~3.3V Low stan db y current: l|iA Typ. a t V dd =3V Auto power-off function Two sections triggered by 2 in pu t keys Built-in envelope control circuit

Contextual Info: HOLTEK r r HT7606 Low Power PIR Controller Features • • • • • • • • Low stand-by current: 30|lA Max. O perating voltage: 4.5V~12V 24 DIP/SOP or 28 DIP/SOP B uilt-in am plifiers and com parators An LED trigger indicator Relay driver output