03-10-2017, 06:51 AM
(This post was last modified: 03-10-2017, 06:52 AM by ppppenguin.)
Circuit diagram for Decca/Unaohm EP685A TV test generator on 4 sheets. Originals kindly supplied by Dave Ingrey.
Rather to my surprise the circle generator is all analogue. Very little logic, all original 74 series TTL.
Rather to my surprise the circle generator is all analogue. Very little logic, all original 74 series TTL.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
