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Isolated Inputs, Non-Linear Low-Pass Filter for HALF-WAVE Rectified Signals Rejection Disclosure Number: IPCOM000037366D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29

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Baudrion, PY Bonnet, Y Ferry, M Jacqart, C [+details]


Disclosed is a circuit for rejecting half-wave rectified signals of frequency over a preset limit. Its input-output isolation along with its transient characteristics make it ideal for customer line identifi- cation process inside public central exchanges. More generally, the disclosed invention is suitable for use wherever significant voltage pulses are mixed with high frequency noise.