Edmonton, AB
Hi - wondering what people are using instead of the 2N3984 transistors on the Bally 6803 drivers boards?
(Topic ID: 248142)
Omaha, NE
Scanning the Atlantis schematics is on my to-do list. Scans that are basically unusable is one of my pet peeves.
Quoted from barakandl:2n4401 can replace 2n3904 most of the time.
I have done this too since I saw that it is compatible, but why does Williams use both on the same system 11 board? Just seems odd to me.
Quoted from 76brian:2N3904 is a very common NPN why change?
2n3904 is better at low current. 2n4401 can handle more current. usually doesn't matter. 2n4401 is my jellybean NPN
Quoted from Tomass:I have done this too since I saw that it is compatible, but why does Williams use both on the same system 11 board? Just seems odd to me.
Maybe 2n3904 cost them 0.01 each and 2n4401 cost 0.012 each and when you buy 100k of them at once it adds up.
Fedensa to Kordek:
"Tell Ritchie to take those drop banks out of the game, purchasing bought 2n4401's instead of 2n3904 and we got hosed"
Quoted from barakandl:Maybe 2n3904 cost them 0.01 each and 2n4401 cost 0.012 each and when you buy 100k of them at once it adds up.
Makes sense. Thanks.
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