PicoMite VGA check

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Regular Member

Joined: 21/01/2022
Location: United States
Posts: 53
Posted: 08:12am 21 Jan 2022      

75 ohm impedance match on the Pico end of the cable isn't the same load as 75 to GND.

So current with the E96's works out to 14.3mA, which is still a bit steep.

With 180 over 150, maybe about 13mA and 650mV.

270 over 1N4148 could be 8.9mA. 1mA of that bled by the diode on the near side. For 588mV into 75 at the far end.

Current might necessitate less than 0.7V at the far end.
Edited 2022-01-21 18:32 by KD5ZXG