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Telephone music on hold box

    
Example: Infrared control system
Electronic circuits archive 


Telephone music on hold box







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Related electronic circuits:

Telephone recording circuit

Telephone amplifier

TELEPHONE AMPLIFIER

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)

FM Telephone Bug

Color Organ Light - Flashes coloured christmas type lightbulbs to music. This circuit works REALLY well. Notice how it will fire even in complete silence. This provides a sort of automatic gain control.

Soft Musical Telephone Ringer

SOFT MUSICAL TELEPHONE RINGER



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