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Posts tagged boster

OP-amp circuit using LM224

OP-amp circuit using LM224 OP-amp circuit using LM224

no picture and audio on my TV?

Bernardo B asked: there is no picture and audio on my TV when i turn-on my TV, but there’s a sound thuk from the speaker when i plug-in the supply cord. i tried to open the back of the TV to check if the fuse is ok and it seems to be good. i trace […]

Circuit Audio using TEA2025B

Circuit Audio using TEA2025B Circuit Audio using TEA2025B

Power Supply and Mute Control Circuit

Power Supply and Mute Control Circuit using 7815 and 7915 , BC549 , Relay

NOISE REDUCTION PROCESSOR

NOISE REDUCTION PROCESSOR DOLBY NOISE REDUCTION PROCESSOR circuit using KA22712 DOLBY B-TYPE NOISE REDUCTION PROCESSOR The KA22712 is a monolithic integrated circuit designed for in Dolby* B-type noise reduction systems. FEATURES Few external components. Low quiescent circuit current (Typ Iccq=4.5mA) High crosstalk rejection ratio. Built in NR-switch, REC/PB-switch. Recommended supply voltage: Vcc=6.5V~16V. DOLBY  NOISE REDUCTION […]

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