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Vibrator - Ferrocart, Type 4085-027-01, circa 1955 Object Reg. No: ST 035822

Summary:
Ferrocart vibrator used for car radios designed to run from 12 Volt DC supply. Ferrocart is a brand used by Electronic Industries.

Vibrators are used to change DC into AC which is then be stepped up by a transformer to the voltage required by the radio. The AC output is then turned back to DC to operate the radio, which is done either by a thermionic rectifier or a second set of contacts in the vibrator. A vibrator with two sets of contacts is called a synchronous type. The 4085-027-01 is a non-synchronous type requiring the use of a separate rectifier.

Synchronous vibrators tend to be quite noisy electrically and require more filtering. Both types were somewhat noisy mechanically; they hum.
Description:
Aluminium cylinder with four pin base in a six pin format with pins 2 and 5 missing.
Acquisition Information:
Donation from Mrs Kennedy, 1984
Discipline: Technology
Dimensions: 82 mm (Length), 38 mm (Diameter)

More information

Tagged with: radios, electronic vibrators, ferrocarts
Themes this item is part of: Information & Communication Collection
Primary Classification: COMMUNICATIONS
Secondary Classification: Radio
Tertiary Classification: components
Inscriptions: Paper label: ELECTRONIC INDUSTRIES PTY. LTD. / FERROCART VIBRATOR / MELBOURNE / DO NOT DETACH THIS LABEL / NON. SYN / 150 CYCLE / 12 VOLT / 4085-027-01 / FORMERLY / M438
Top end of can: 4085 / 027 / 01
Manufacturer: Ferrocart, South Melbourne, Victoria, Australia, circa 1955

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