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Amplifiers Audio using LA4505

Amplifiers Audio using LA4505

power supply Circuit diagram

+15V -15V power supply Circuit diagram with ic 78xx and 79xx, 7815, 7915, BC549

car sound generator schematic

car sound generator circuit car sound generator schematic diagram 555 4017 557 car sound generator schematic 555 Here we have an astable oscillator built around 555, which gives an alarm tone of 1.8 KHz directly driving a speaker. This is basic alarm circuit, which is later used in many other projects in the book. While […]

Free Download TDA7294 IC Second Voice recorder module and Service Manual free download, schematics, datasheets, eeprom bins, pcb

Free Download PDF TDA7294 IC Second Voice recorder module and Service Manual free download, schematics, datasheets, eeprom bins, pcb TDA7294 IC Second Voice Recorder Module. Non-volatile multi message recorder using ISD chips. Just change one resistor for longer duration. Standalone operation using just six onboard bottons. Record via built-in microphone or external line in. Speaker […]

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