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Subject: Re: Video Sync Inverter.

Date: 09/08/02 at 12:50 PM
Posted by: Brian Snell
E-mail: bsnell@lara.on.ca
Message Posted:

In Reply to: Video Sync Inverter. posted by gary on 08/04/02 at 11:31 AM:

Greetings. If you want to use a transistor, wire it up with equal collector and emitter resistors (around 10K). Depending on the base drive (can it be directly DC coupled or is it fed via a capacitor), you may have to experiment with some biasing, but at least the output will be one polarity at the collector, and the opposite at the emitter. I am assuming that you already have good clean sync available as a driving source. Choice of transistor is not critical and whether NPN or PNP would depend on how the rest of your circuit has been designed.

Hope this may be helpful.


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