UPS Circuit For Cordless Phones PCB

Posted on Feb 6, 2014

Circuit This circuit diagram of UPS is designed to use with a cordless telephones that cannot be operated during power failure. Since the ups is only meant for telephone, it`s output power is limiter to 1. 5W. This ups circuit is economical and can be assembled on a general purpose PCB. The circuit works around IC CD4047 which is an astable multivi

UPS Circuit For Cordless Phones PCB
Click here to download the full size of the above Circuit.

brator operating at line frequency 50Hz. It`s outputs are capable of driving MOSFETS IRF540 that is configured as push pull type, directly. Here the inverter output is filtered the spikes are reduced using a metal oxide varistor (MOV).

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