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Old Yesterday, 07:33 PM   #11211
apexaudio is offline apexaudio  Serbia
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There is DC555S stereo protect with fan drive...
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Old Yesterday, 11:46 PM   #11212
still4given is offline still4given  United States
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100W Ultimate Fidelity Amplifier
Quote:
Originally Posted by apexaudio View Post
There is DC555S stereo protect with fan drive...
68x55mm
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File Type: jpg Apex Speaker Protect DC555S.JPG (721.2 KB, 19 views)
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File Type: pdf APEX Stereo Protection DC555S toner.pdf (63.5 KB, 3 views)
File Type: pdf APEX Stereo Protection DC555S componants.pdf (21.4 KB, 4 views)

Last edited by still4given; Yesterday at 11:52 PM.
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Old Today, 12:08 AM   #11213
bullittstang is offline bullittstang  United States
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Originally Posted by bullittstang View Post
I have a few questions on the FH11/12 deisgn posted in the thread. Plan to use @eaglemaster v1.07 gerber files from post #8557.



1 - Is MJE340/350 interchangeable with KSC3503/KSA1381? I see both on different versions of the board throughout this thread. Datasheet leads me to think they are, because they have similar parameters with the MJE's have higher current and disapation capabilities? Can someone confirm?



2 - Can I also substitute BD139 for a MJE340 - or is that overkill or not suggested?



3 - What are R40 & R41 (22r 1/4w 1%) but not showing on the PCB silkscreen?


Anyone able to answer these questions?
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