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Here is a teleremote circuit which enables switching 憃n?and 憃ff?of appliances through telephone lines. It can ......
Normally the base of a cordless phone has an adaptor and the handset has Ni-Cd cells for its operation. The ba......
The given circuit, when connected in parallel to a telephone, dis- plays the number dialled from the telephone......
The circuit shown here is used to switch on a lamp when the tele- phone rings, if the ambient light is insuffi......
Acompact, inexpensive and low component count telecom head- set can be constructed using two readily available......
Often a need arises for connection of two telephone instruments in parallel to one line. But it creates quite ......
Here is a simple yet very useful circuit which can be used to eavesdrop on a telephone conversation. The circu......
This simple circuit using a single transistor turns ON the relay when light falls on the LDR.The potentiometer......
Using modulated rectangular waves of different time periods, The circuit presented here produces ringing tones......
The circuit presented here can be used for connecting two telephones in parallel and also as a 2-line intercom......