Function of generator and battery explained. Direct Current Controllers

$23.22. USOE-Castle. OE388. Shunt motors driving various types of equipment; direct current controllers in operation; animation of a starting and speed regulating direct current faceplate controller connected to a shunt motor.
Complete catalog record
Category: Electronics
Subcategory: B & H.
Type: Slide Film
Source: USOE Casth
Catalog number: OE388
Price: $23.22.
Format code: 16sd

Sources

  1. Index of Training Films 1946 — title, creator, length, format, sound, description, catalog record