Impedance Bridge

Circa 1960's

Saturday, April 05, 2014

Impedance bridge theory developed in 1830's and in the 1840's Charles Wheatstone improved it for accurate resistive/impedance testing. Note "magic eye" tube lower center.

Categories: Instruments Collection

Author: ephf

Edmonton Power Historical Foundation is a non-profit society dedicated to preserving the history of electric power in the City of Edmonton and the Province of Alberta, for the education and entertainment of current and future generations.

Edmonton Power Historical Foundation

Location:

We are located on the grounds of the Leduc West Antique Museum. Travel 5 km west of Leduc on Highway 39. Go north on Range Road 260 (Cohne Dale Road) for about 800 metres and the museum will be on your right. If you're coming from the west, Cohne Dale Road is 5km east of Highway 60.

Hours of operation 2026

The opening dates for 2026 have been announced!
We will be open for the Volunteer Expo on April 11, the Spring Fire-up on May 23 & 24, the Leduc West Annual Exposition on July 18 & 19, Leduc County Days on August 15 and finally in September the Country Harvest on September 12 & 13 and the Lesco Truck Show on September 19. Watch this space! Plus we are availble for private tours in the summer - just contact us from this web site; We'd LOVE to see you!