Doorbell for Deaf People (Circuit)

Doorbell for Deaf People (Circuit)

Doorbell for Deaf People.

When a deaf person is alone in a house, it would be very difficult to realize that someone is knocking on the door without any visual warning signal.

The main component for the Doorbell for the deaf circuit is the CMOS 4001 integrated circuit, which has four two input NOR gates

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Light-Emitting diode connected to 120/240 VAC

Light-Emitting diode connected to 120/240 VAC

Light-Emitting diode connected to 120/240 VAC Caution: This circuit is connected directly to the power line (120 / 240 volts AC), so you must take special care to test it. This circuit shows one or two¬†LEDs (Light-Emitting Diode)¬†directly connected to the outlet (120 VAC or 240 VAC). The reduction of the AC input voltage to […]

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