bell transformer

bell transformer

[′bel tranz‚fȯr·mər]
(electricity)
An iron-core, step-down transformer with a voltage step-down ratio of approximately 6 to 1 or 12 to 1, used in low-current power supplies and frequently in circuits for doorbells, alarm bells, and buzzers.

bell transformer

A small transformer which supplies power, at low voltage, for operating a doorbell or the like.
References in periodicals archive ?
Tenders are invited for Supply of Spares For Safex Make Signalling Bell And Bell Transformer.
The latter involves connecting a bell transformer permanently to the mains supply, so basic electrical skills are required.
Both battery and mains-operated systems are available, but the latter involves connecting a bell transformer permanently to themains supply, so basic electrical skills are required.