There is many preamps... use this circuit.
Thanks apex ,always The Best.
You have Pcb And montage Plan for fet preamps?
This is my project apex hv23 . In the first test , it worked well for 15 minutes with average volume when the 5 amp fuse on PSU -7 was burned , the heat sink was lukewarm. Why , if the fuse goes to the transformer?. 45-0-45 v ac 450w. thanks
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This is my project apex hv23 . In the first test , it worked well for 15 minutes with average volume when the 5 amp fuse on PSU -7 was burned , the heat sink was lukewarm. Why , if the fuse goes to the transformer?. 45-0-45 v ac 450w. thanks
Nice work, what is dc offset and bias measurements?
Nice work, what is dc offset and bias measurements?
dc offset: 8.9mv
bias: 23mA *+****-.
It is not the same measure in all resistors R47: 3 are 10.5 mv + - and the other 14.5mv
Is this part to use in hv23 amplifier?sir apex,
what is the detail of this choke coil?
wire size,
core dia.
no.of turn.
hello
I have a question mister Mile, does Q9,10 from Apex HV23 need to be installed to main heat sink always ?
Regards
Juan
Yes Q9 and Q10 must be on main heatsink.
Regards
Yes Q9 and Q10 must be on main heatsink.
Regards
thanks mister Mile
Regards
Juan
Hello guys I don't think I ever gonna build this but it does look interesting, I almost completed yes I know is not practical just ideas "maybe too crazy"
That's very nice. 1000w? If it gets checked out and approved by others around here I would like to build it. Hexfets are cheap.
What's the ps rail voltage? Maybe high enough we just need to rectify wall AC and add caps (save a ton on the lack of a trafo)?
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I simulated with 150V rails and I get before clipping 1600W I'm just having fun with this the correct rail value is 75V DC too dangerous to play with this rails voltages but I have add two 330 resistors for the driver board
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clipping indicator not working on simulation
hello guys
I have a little problem with the clipping indicator circuit seem not to work on simulation, does "PRO" need to be connected in order to clipping indicator to work? I'm attaching the multisim 14 file and PDF
I most then making a mistake for sure, but I'm not sure what it is
Regards
Juan
hello guys
I have a little problem with the clipping indicator circuit seem not to work on simulation, does "PRO" need to be connected in order to clipping indicator to work? I'm attaching the multisim 14 file and PDF
I most then making a mistake for sure, but I'm not sure what it is
Regards
Juan
Attachments
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hello guys
I have a little problem with the clipping indicator circuit seem not to work on simulation, does "PRO" need to be connected in order to clipping indicator to work? I'm attaching the multisim 14 file and PDF
I most then making a mistake for sure, but I'm not sure what it is
Regards
Juan
Hi Juan,
I think Mr. Miles is on holiday, when he comes back, i am sure he will reply.
reg
prasi
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