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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 […]

Tone Controller circuit Diagram Two Transistor

Tone Controller circuit Diagram Two Transistor Electrical schematics diagram shown below is a simple two transistor tone controller audio circuit free pictures for download. This electric circuit is based on the well-known Baxandal tone control plan. Deviation in the value of these electrical circuit transistor components varies the audio response of the system. This tone […]

How do you design a PCB?

nanon asked: I want to design my own PCB. My objective is to power 3 motors from my computer using DB25 pin connector, and a power supply. MY only problem is I have no idea how to design one. I do not know any of the components either. does anyone have an idea of how […]

Preamps Microphone Mixer circuit

Preamps Microphone Mixer circuit Choosing a good power amplifier is very easy but to choose the perfect microphone preamps is not easy, because the adjustment of sound pressure level (SPL) with volt level (dBu). Matching microphones and preamplifiers requires proper research and measurement, so to do this does not depend on your budget – but […]

Air Conditioning Compressor controller wiring Diagram

Air Conditioning Compressor controller wiring Diagram using relay

Headphones Circuit

Headphones Circuit using SMI1458 1458 Headphones Circuit using SMI1458, 1458

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