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Here is a telephone line vigilant circuit to guard against mis- use of your telephone lines. It monitors telep......
Here is a teleremote circuit which enables switching 憃n?and 憃ff?of appliances through telephone lines. It can ......
The given circuit, when connected in parallel to a telephone, dis- plays the number dialled from the telephone......
Acompact, inexpensive and low component count telecom head- set can be constructed using two readily available......
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......