schelemixer

thisisasimpleanalogvideomixerbasedonthelm1881syncseparator

thereisacrossfadercrossdissolve50inthecenterandafadeeffectwith3settingsthefadeeffectquicklychargesacapacitorwiththevideosignalandslowlydischargesitbackintothevideosignalselectingthefilterwillfilteroutthecolorinformationresultinginablackandwhiteimage

becauseallvideodeviceshaveslightlydifferentvideosyncspeedstheselectedvideowillstandstillonthescreenandtheothervideosignalwillscrollhorizontallythatiswherethenameschelecomesfromwhichisdutchforcrosseyed

itworksbytakingthesyncofoneofthetwoconnectedvideosignalsandpushingitundertheoutputvideosignal
soblankingperiodswillpartiallybeignoredmakingitnot100validvideosignal

compatibilityntscandpal

schematics

schelemixer1

schelemixer2

screenshots

scopesyncfromotherchannel

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1977 B.C. till 2014 © Gijs Gieskes - about