Doorbell light for the Deaf

Posted on Dec 8, 2012

This circuit provides a delayed visual indication when a door bell switch is pressed. In addition, a DPDT switch can be moved from within the house which will light a lamp in the door bell switch. The lamp can illuminate the words `Please Wait` for anyone with walking difficulties.

Doorbell light for the Deaf
Click here to download the full size of the above Circuit.

The circuit uses standard 2 wire doorbell cable or loudspeaker wire. In parallel with the doorbell switch, S1, is a 1N4001 diode and a 12 volt 60mA bulb. The bulb is optional, it may be useful for anyone who is slow to answer the door, all you need to do

Leave Comment

characters left:

New Circuits



Popular Circuits

Solar LED Mood Light
Circuit Magic
Circuit DIY of the inverter (picture and text is explained in detail)
The E-meter
Versatile Op Amps Need No Resistors
Wireless Sensor Motor Control Circuit
Morse Keyer Redesign and Rebuild