I have a lot
what would be the best?
i am starting to build a post with everything i have
meanwhile if you can tell me what the bests would be if i see you posted ill see if i have them
what would be the best?
i am starting to build a post with everything i have
meanwhile if you can tell me what the bests would be if i see you posted ill see if i have them
I will list you everything i have it will be more simple
K161
A1267
H945
FR91A
9014C
TL431
2931A
C1740
A933
C458
C1335
C461
A738
C1368
D882
B727
TIP125
TIP107
A1129
7812CV
7805CT
C3225
C2240
J103
C2308
C2655
A1020
K161
A1267
H945
FR91A
9014C
TL431
2931A
C1740
A933
C458
C1335
C461
A738
C1368
D882
B727
TIP125
TIP107
A1129
7812CV
7805CT
C3225
C2240
J103
C2308
C2655
A1020
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Use the 2SA1129 if it will fit into the through-holes. It will have to face the opposite direction because the pin configuration is reversed.
looks exactly like that
but all to-220 looks the same 😛
is there a way i can check ?
could there be other NEC models written A1129 on it...
but all to-220 looks the same 😛
is there a way i can check ?
could there be other NEC models written A1129 on it...
ill test it and see if i put ground on the base if the collector voltage goes through the emitter
cause i am not 100% shure its a 2SA1129... dont want to mess something else on the board cause its not the good part 🙁
The supply voltage is connected to the emitter (in this circuit) and, when the transistor is switched on, the transistor begins to conduct and voltage is passed to the collector.
when i tested it i had constant 12V on the collector and DMM on emiter and it worked??
there is no polarity ? wether 12V is on collector or emitter it will output 12v on the other when ground is applied to the base ??
cause looking at the diagram and for a PNP it would come in from the emiter and go out through the collector and i tested it the oposite and it worked...
there is no polarity ? wether 12V is on collector or emitter it will output 12v on the other when ground is applied to the base ??
cause looking at the diagram and for a PNP it would come in from the emiter and go out through the collector and i tested it the oposite and it worked...
i dont have to reverse the transistor
with the amp B+ and GND terminal on the right
on the board the base is on left collector in middle and emitter on the right exactly like the 2SA1129 if i have it face to me
with the amp B+ and GND terminal on the right
on the board the base is on left collector in middle and emitter on the right exactly like the 2SA1129 if i have it face to me
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I hate using mica to separate the collector from the heatsink .. to much risks it fails ...
would you have another replacement for P55NE06FP ... with a TO-220FP case :\
i dont care if i have to buy 6 again and waste the others... its safer in my head..
unless you say that it should not fail if installed correctly...
would you have another replacement for P55NE06FP ... with a TO-220FP case :\
i dont care if i have to buy 6 again and waste the others... its safer in my head..
unless you say that it should not fail if installed correctly...
The TO-220 transistor is BCE. The small transistor is ECB. It has to be reversed.
The mica insulators are OK. The clamping system used in this amp is the problem. The shoulder washers are marginal at best. You have to make sure that the transistor is lying perfectly flat after it's screwed down.
The IRFIZ48 is generally a good substitute.
The mica insulators are OK. The clamping system used in this amp is the problem. The shoulder washers are marginal at best. You have to make sure that the transistor is lying perfectly flat after it's screwed down.
The IRFIZ48 is generally a good substitute.
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