| nbcd |
please tell me what are the voltage values for the capacitors and the power for the resistors in the power amplifier in the schematic below?
please
all the best |
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| pinkmouse |
I know I'm getting old and blind, but that's a bit too small for me! Any chance of a bigger pic?;)
If you're having problems sizing the image, email it to me and I will post it for you. |
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| blip |
| Do you have a larger picture of that schematic? |
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| nbcd |
If you are having problems with zooming go at www.nbcd.3x.ro and you can find there in schematic directory in much bigger size.Thank you
alll the best |
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| blip |
I took a look at the schematic you e-mailed me.
Since you are running it off of a +/-55 volt supply the caps will have to take (at absolute most barring some sort of failure) 110 volts. Add a healthy safety factor on to that and pick up something in the 150 volt range. Note that those numbers are pretty paranoid and lots of the caps in that model won't see those voltages
As for resistors, you will have to have someone more experienced than I trace out the required watt ratings. I don't see anything off hand that would require anything unreasonably large, but I very easily could be missing something. |
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| UrSv |
| quote: | Originally posted by blip
I took a look at the schematic you e-mailed me.
Since you are running it off of a +/-55 volt supply the caps will have to take (at absolute most barring some sort of failure) 110 volts. Add a healthy safety factor on to that and pick up something in the 150 volt range.
As for resistors, you will have to have someone more experienced than I trace out the required watt ratings. I don't see anything off hand that would require anything unreasonably large, but I very easily could be missing something. |
Only the caps that see that high voltage need to be rated that high. Most of the caps can be 63 V if it is running off 55 V rails and the caps are per rail which obviously is impossible to see in the picture. Most of the resistors are probably fine as 0.6 W standard metal film with the exception of the emitter resistors which should be fine as 3-5 W. Again, it would be easier if the picture was viewable... |
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| blip |
Ahhh.... I see you caught my mistake while I was editing. Thanks.
BTW, in my edit I should have said that no caps will see that kind of voltage unless there is a miss-wire someplace... which unfortunately can happen. (well, to me at least, :eek: )
Also, he sent me a link to the full schematic at http://www.nbcd.3x.ro/Schematic/schm250.jpg . |
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