Optocoupler built-in self test for applications requiring isolation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 21, 1994
Grant Date -
N/A
app pub date -
Mar 1, 1993
filing date -
Mar 1, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optocoupler circuit arrangement includes an isolated power source for producing a bipolar test signal, an analog multiplexer switching matrix coupled to the isolated power source for receiving and distributing the test signal, control logic for controlling the analog multiplexer switching matrix, and a plurality of optocouplers, each having a respective electrically isolated output circuit and an input circuit for receiving input signals from an external source. The optocoupler input circuits are coupled to the analog multiplexer switching matrix to receive respective test signals therefrom under control of the control logic. Blocking circuitry is provided at the optocoupler input for isolating the test signals from the external source.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully