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Ac-dc & thermal relays howto design & build 1946 plans
Discover a Wealth of How-to Projects & Plans from a Bygone Era.
Explore our Scientific & Mechanical History
in Vintage Hobby, Craft, & Technical Magazines.
Be Sure to Check our grandpas_secrets Store for lots more great Items.
AC-DC & THERMAL RELAYS HowTo Design & Build 1946 PLANS
A three part article on Building Your own Relays. Info on how to decide what you need and then how to build your own custom relays.
This is an original three part, 13 page magazine article from 1946.
* Measured Drawings and Diagrams
* $5.00 for priority mail service.
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