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Telephone Line Monitor

    
Example: Infrared control system
Electronic circuits archive 


Telephone Line Monitor







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Related electronic circuits:

Telephone recording circuit

Telephone amplifier

TELEPHONE AMPLIFIER

Audio Perimeter Monitor

Simple circuit to connect telephone equipment to audio mixer

FM Telephone Bug

Telephone line monitor. If you feel that somebody is tampering with your telephone line you might find this little circuit useful. It detects if there is another telephone connected to the line, if there is a short or an open line. (simple)

Audio Perimeter Monitor

FM Telephone Bug

220V mains monitor. With this circuit you will be able to monitor the quality of the mains. (simple)



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