Re: Multi-Channel VHF Modulator Design
Hi David,
the problem is the changes of the sync takes place at the DC-restorer
and this is in the IC! So you must look for sync level changes at
the output of the vision demodulator in the TV set.
An eventually reduce of brightness from left to right can you measure
at pin 9 I think.
Kind regards
Darius
PS: The picture shows the input of the cxl's.
the clamp current comes from the LM1881 ony at the sync tips.
So the cap at the input will not be discharged during a line.
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