Olgerts Stauers
Engineers at Balsam Way, Denver, CO
License number
Colorado 9754
Issued Date
Dec 20, 1969
Renew Date
Oct 12, 1993
Expiration Date
Oct 12, 1993
Type
Professional Engineer
Address
Address
2511 S Balsam Way S. BALSAM WAY, Denver, CO 80227
Professional information
Method And Apparatus For Testing Open Collector Electrical Circuit Devices
US Patent:
4465968, Aug 14, 1984
Filed:
Nov 13, 1981
Appl. No.:
6/321154
Inventors:
Olgerts Stauers - Lakewood CO
Assignee:
AT&T Technologies, Inc. - New York NY
International Classification:
G01R 1512
US Classification:
324 73R
Abstract:
A method and apparatus for testing a plurality of electrical circuit devices (100a. . . 100n FIG. 4) to determine individual device failures wherein the input, (110-117) output (118-121) and power leads (130) of each device are interconnected with corresponding input, output and power leads of the other devices to form common input, output and power leads. The ground lead (140. . . 140n) from each device is individually connected with test apparatus (102). Test signals are introduced onto the common input (110-117), output (118-121) and ground leads (130) and signals, responsive to the test signals, are monitored on the individual ground leads (140. . . 140n) by test apparatus 102 to determine individual device failure.
On-Hook/Off-Hook Detector Circuit
US Patent:
4282408, Aug 4, 1981
Filed:
Oct 25, 1979
Appl. No.:
6/088219
Inventors:
Olgerts Stauers - Lakewood CO
Assignee:
Western Electric Company, Inc. - New York NY
International Classification:
H04M 322, H04B 300
US Classification:
179 18FA
Abstract:
An on-hook/off-hook detection circuit comprises a light-emitting device 54 connected across the tip T and ring R leads of a subscriber's telephone set 50 and between current source 56 and ground 57. A photo-transistor 60 is optically coupled to the light-emitting device 54 for signaling a line scanner 53. When the subscriber's telephone set 50 goes off-hook, a short circuit comprising tip T, telephone set 50 and ring lead R causes light-emitting device 54 to become non-conducting while the light-emitting device 54 is conducting when subscriber's telephone set 50 is on-hook.