Do you recall the little strip delay lines used in earlier TV video? Bearing in mind we use PAL in the UK I have seen 3 configs in TV's for delay lines 1 very compact chroma delay which uses a core and coils, not sure fully of the build config, they are compact and were mostly used in videos. 2 a long rod with very fine copper wire wound down it's length also Incorporated fine copper foil, these were used in early TVs for the chroma delay line. 3 Flat rectangular construction, which house a glass plate, ultra sonic transducers were used to fire sound waves through the glass medium at angles, the sonic wave bounces off the glass edges until it finally reaches the ultrasonic receiver transducer, commonly used in luminance delays. A chroma delay gives about 64uS and a luma delay gives 1-2uS I am hoping that by rotating the 2 Cd's i can vary the phase and then not need a delay line  Not yet sure if it will work
« Last Edit: 2012-10-14, 08:59:32 by Peterae »
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Topic: Testing ION's Bifilar Circuit with Bias (Read 15429 times)
