R1 = 1 Meg, Preset Pot|
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Telephone line off-hook indicatorOff-Hook Telephone Line Indicator Figure 1 The circuit is designed to connect in parallel with the telephone line, to monitor and detect if any telephone in the same line is busy, with ... readmore
Power Supply 5V 1A by IC 7805Power Supply 5V 1A by IC 7805Source : semiconductor circuitThis circuit power supply 5V 1A by IC 7805.It easy circuit. For Digital Circuit.PCB Power Supply 5V 1A by IC 7805 ... readmore
Automatic Room LightsAutomatic Room Lights An ordinary automatic room power control circuit has only one light sensor. So when a person enters the room it gets one pulse and the lights come ‘on.’ When the person goes ... readmore
Electronic Siren CircuitDescription:An electronic siren made from discrete components. Circuit diagramNotes:The sound produced imitates the rise and fall of an American police siren. When first switched on the 10u capacito ... readmorefSWQgCWk~$%28KGrHqEOKjcEweumJlfOBMNq3jeYTQ%7E%7E_35.JPG)
555 Two-Tone AlarmElectronic Project
555 Two-Tone Alarm
This project is designed to support the Hila demonstration speaker project.
Follow this link for information about getting started in electronics.
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