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New Jersey Semiconductor 2NN datasheet pdf
Looks like perhaps I could use a 2N Can you scan that section to share? Dec Mon 31, 3: Baldwin liked to use those 2Ns, mostly “green” daatsheet occasionally “orange” as well. Made a mistake for the transistor number. Watch out for the fact that those have different pinouts! Page 3 of 3.
2N Datasheet PDF –
Oddly enough it doesn’t seem to affect anything and honestly I think the reverb is better now, but that function is never used. Datasheet the 1 volt increase just be what the normal signal level was when the organ was new? Transistor substitutes update Posted: How much difference would that make if I just replaced all the 2N with the 2N?
I found a suitable sub for the 2N Jan Tue 05, 2: Previous topic Next topic. May Mon 09, 4: Users browsing this forum: Which section do you need to see?
Makes darasheet harder to find out why the 16′ bass isn’t working as I was hoping it was a bad transistor. This is a Conn model organ.
Small Signal Transistors
Just looked and I can bypass the reverb board far as the datqsheet signal is concerned. I can check it as the output of the reverb amp that drives the reverb tank has a measurement point where a DB reading is listed.
After a ,long while I decided to tackle the noise issue. Still have a little noise that changes with the expression pedal setting which is after the post amp board so I will replace the three transistors on it for good measure. Transistor substitutes 2N sub found Posted: So it looks like I may only datxsheet one transistor on the post amp board which is the 2N as the datasheeet two on that board form a turn on delay that mutes the audio while the rest of the organ comes up.
Books Support This Site: What I wonder is this.
I used to work on organs quite a bit, years ago. I’ll post the picture of the schematic in the main restoration topic viewtopic.
2N2925 Datasheet PDF
Anything related to the above. Jan Tue 05, 4: Given these transistors just amplify the audio signal I am thinking any suitable sub will work ok. May Thu 26, 6: It is the 2NA and I happened to find some in my stash.
The only issue I saw when testing the board at work was that there was a 1 volt increase in signal voltage out of the second 2N stage right after the input stage when I used the 2NA transistor. What brand of organ is this? Should be 2NA not 2NA The background noise is almost gone after replacing the 2N transistors on the reverb board. Also if I still have some noise I will have 2n22925 replace the 2N transistors in the solo and accomp mixing preamps and the complex voice preamp.
If I wanted to do away with the reverb board completely how could I derive the 28Vdc? Mouser don’t know when they will get the MPS back in stock, but a NTE is a suitable sub and since this is just used to regulate the rod bias I feel comfortable in using that one.
Transistor substitutes 2N sub found. In most cases it didn’t seem to make a whole lot of difference. I will need to do a test to see if the gain is unity dafasheet very close to unity as the reverb board sends the signal through one transistor and takes t he signal from the emitter and applies it to the emitter of the last transistor on the board to allow the clean signal to pass through. PDF 2N data http: