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Gary A Ledbetter, 732902 Lesmer Ct, Saint Louis, MO 63114

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2902 Lesmer Ct, Saint Louis, MO 63114    314-4235450   

Overland, MO   

Roseville, CA   

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Gary Ledbetter Photo 46

Gary Ledbetter

Work:
Uunet 1999 - 2004
Network Engineer
Skills:
Network Engineering, Networking, Network Architecture, Mpls, Lan Wan, Wan, Routing, Juniper, Ospf, Routers, Cisco Ios, Bgp, Microsoft Technologies, Vendor Management, Cisco Technologies, Computer Network Operations, Network Design, Vpn, Ip, Ethernet, Security, Junos, Firewalls, Switches, Network Security, Juniper Technologies, Multiprotocol Label Switching
Gary Ledbetter Photo 47

Gary Ledbetter

Gary Ledbetter Photo 48

Gary Ledbetter

Gary Ledbetter Photo 49

Gary Ledbetter

Gary Ledbetter Photo 50

Gary Ledbetter

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Gary Ledbetter

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Gary Ledbetter

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Gary Ledbetter

Publications & IP owners

Us Patents

Mini-Relay Or Reed Relay Tester

US Patent:
5065101, Nov 12, 1991
Filed:
Mar 7, 1990
Appl. No.:
7/490123
Inventors:
Gary A. Ledbetter - Marysville CA
Assignee:
NEC Electronics, Inc. - Mountain View CA
International Classification:
G01R 3102
US Classification:
324418
Abstract:
A mini-relay signal tester designed to simplify, speed up, and test the operation of "mini" or "reed" relays which are suspected of intermittent failure. These types of relays are extensively used in memory and gate-array testing systems and their failure can cause the semiconductor devices being tested to be erroneously rejected. The relay tester dynamically exercises the relay being tested by application of a square-wave input signal to its coil. The square wave input "reference" signal driving the relay coil is then compared to a square wave output "test" signal which is generated by the contacts of the relay being tested. The signals are compared on a dual-trace oscilloscope. When difference between signals exceeds acceptable standards the relay is rejected.

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