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Posts tagged BC559

Power Supply Control

Power Supply Control using BC549, BC559, BD139

Power Supply Control

Power Supply Control Transistor using BC549, BC559, BD139

Electronics Schematic Diagram alarm Door Bell circuit using NE555 part 1

Electronics Schematic Diagram alarm Door Bell circuit using NE555 The main part of this doorbell circuit are two NE555 timer ICs.When some one presses switch S1 momentarily ,the loud speaker sounds a bell tone as long as the time period of the monostable multivibrator built around IC1. When the switch S1 pressed, IC1 is triggered […]

20 watt Audio amplifier circuit

20 watt Audio amplifier circuit using LM1875

Circuit diagram DTMF Decoder using HT9032A MT88L70 HT9202H

Circuit diagram DTMF Decoder using HT9032A MT88L70 HT9202H This exciting project and something that many have been developed, but always remains to add some improvements. The DTMF decoder circuit for distinguishing some separate external components to produce devices capable of sending binary code from a button on the multi-tone phone. This circuit, in addition to […]

Theater and education

Theater and education Schematic Audio Theater and education Schematic Audio Bus Theater for education RUX C710, DVA-9861E, LCD TV Samsung 19 inch Theater and education Theater and education

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