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Q9: Difference between revisions

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(see also q13)
((Transistor Inverts Pol) is not near Q9)
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'''Q9''' is an NPN bipolar junction transistor that inverts the polarity of the /[[CSYNC]] line.  The base is connected to R22, which is in series with both pin 100 of [[S-PPU2]] and pin 8 of the [[Video Encoder]].  The emitter is connected to R25, which is in series with pin 3 of the [[Multi-Out]].  The collector is supplied by [[VCC]].
'''Q9''' is an NPN bipolar junction transistor that appears to amplify the /[[CSYNC]] line.  The base is connected to R22, which is in series with both pin 100 of [[S-PPU2]] and pin 8 of the [[Video Encoder]].  The emitter is connected to R25, which is in series with pin 3 of the [[Multi-Out]].  The collector is supplied by [[VCC]].


[[File:q9.png|thumb|Q9, in region A4 of the jwdonal schematic]]
[[File:q9.png|thumb|Q9, in region A4 of the jwdonal schematic]]

Revision as of 05:20, 3 May 2023

Q9 is an NPN bipolar junction transistor that appears to amplify the /CSYNC line. The base is connected to R22, which is in series with both pin 100 of S-PPU2 and pin 8 of the Video Encoder. The emitter is connected to R25, which is in series with pin 3 of the Multi-Out. The collector is supplied by VCC.

Q9, in region A4 of the jwdonal schematic

See Also