Ringing Phone Light Flasher


Posted on May 18, 2012

I have received several emails asking how to connect up some lights so that when the phone rings, they flash. This is very useful in a situation were there is lots of noise and it is impossable to hear the phone, such as a workshop. Here is such a device.


Ringing Phone Light Flasher
Click here to download the full size of the above Circuit.

# You may need to use a lower voltage zener for D1 and D2. # You can use a regular relay instead of a solid state relay, but the arcing accross the contacts may destroy it pretty quickly. # Be very sure that you have not accidentally connected 120V




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

RF Field Strength meter
Programmable-active-filters
Divide-circuit
Ne602 Direct Conversion Receiver Circuit
Security / Automation Sensors using Arduino
Battery Powered Burglar Alarm
Function Generator
joule thief
VHF field strength meter
Gray Tube Replication 75
A simple AM modulator
EL Lamp Driver Using HV832MG
WSl57 + 5V 1.6A precision switching power supply circuit comprising
2Hz unsteady pulse single circuit diagram



Top