H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/16
H04M 3/02 (2006.01) H04M 19/02 (2006.01)
Patent
CA 1268872
ABSTRACT Ringing Circuit The invention concerns an electronic ringing circuit for telephone systems. A capacitor is connected to the centre tapping of a first coil inductively coupled to a transistor-controlled supply line. The other side of the capacitor is connected to the junction between two switches each switch being connected via an induction coil to one end of the first coil so that when the switches are switched in opposite senses load current is drawn in alternate directions from the capacitor.
531679
Cross Peter Andrew
Robson Michael Arthur Charles
Cross Peter Andrew
Fetherstonhaugh & Co.
Gec Plessey Telecommunications Limited
Robson Michael Arthur Charles
LandOfFree
Ringing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ringing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ringing circuit will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1279541