wouldnt the feedback be a lower voltage if the input was a low voltage? I thought it scaled to the same voltage as the input. Maybe my understanding is wrong. If so how would I do this? thanks luka!
And just a question to see if i understand how those diodes work... is it the equivalent of using two large ultra fast individual diodes?
like two 200V 5A ultrafast diodes with the bias both facing the inside or both facing their respective outside? Hopefully this makes sense
And just a question to see if i understand how those diodes work... is it the equivalent of using two large ultra fast individual diodes?
like two 200V 5A ultrafast diodes with the bias both facing the inside or both facing their respective outside? Hopefully this makes sense
That goes for unregulated supplys, lower input, lower output
With feedback, it should be made, that output is constant, for some set input voltage say from 9-16v if we are talking about car supply. And talking on, feedback is looking only secondary, and trys to correct it, so if good feedback is made, voltage will be constant, independent from load, input voltage and other stuff
Sure you could use 2 diods if they are dual inside, here, and this depends on what you want, you see this supply has fullwave rectification, thats why 4 diods are used and coz you can use any that is voltage/current rated for design used in. You have some diods that common anodes, and some common cathodes. But there are not that many of them, so usage of 4 diods is cool and better cooling
With feedback, it should be made, that output is constant, for some set input voltage say from 9-16v if we are talking about car supply. And talking on, feedback is looking only secondary, and trys to correct it, so if good feedback is made, voltage will be constant, independent from load, input voltage and other stuff
Sure you could use 2 diods if they are dual inside, here, and this depends on what you want, you see this supply has fullwave rectification, thats why 4 diods are used and coz you can use any that is voltage/current rated for design used in. You have some diods that common anodes, and some common cathodes. But there are not that many of them, so usage of 4 diods is cool and better cooling
alright so it's more or less how i understood
it seems we've miscommunicated though, i just was wondering if +/- 16 volts would be enough to test just the amplifier board. I'm testing it separately from the SMPS to make sure its fine. And i understand what you're saying about feedback now, but risto said the SMPS is unregulated? I do not understand the purpose of the TL494 ic in the circuit then...
it seems we've miscommunicated though, i just was wondering if +/- 16 volts would be enough to test just the amplifier board. I'm testing it separately from the SMPS to make sure its fine. And i understand what you're saying about feedback now, but risto said the SMPS is unregulated? I do not understand the purpose of the TL494 ic in the circuit then...
Hi there!
I follow this proyect from the begining, including Sergio´s proyect in ESP site and Valve Audio's site, because i want to build a car power amplifier to move a Polk´s sub MW8500 and other drivers. I want hi fidelity, not much power.
In the entire proyect i can´t find the answer to my "gnd´s question". If the SMPS primary ground if different to the secundary ground (who is used by power amplifiers), how can i connect the main unit RCA pre out to the power amplifiers input?? conecting both GND´s in this way, can blow up the main or the SMPS? If it´s wrong, wich is the correct way to connect the MU to the PA?
Thanks!
I follow this proyect from the begining, including Sergio´s proyect in ESP site and Valve Audio's site, because i want to build a car power amplifier to move a Polk´s sub MW8500 and other drivers. I want hi fidelity, not much power.
In the entire proyect i can´t find the answer to my "gnd´s question". If the SMPS primary ground if different to the secundary ground (who is used by power amplifiers), how can i connect the main unit RCA pre out to the power amplifiers input?? conecting both GND´s in this way, can blow up the main or the SMPS? If it´s wrong, wich is the correct way to connect the MU to the PA?
Thanks!
nice job,
may i know how do i connect the relay from the protection pcb?
because i saw a lot of hole n it marked relay,
may i know how can connect it?
also how can i make the transformer isn't i can use the core from computer power supply without any modify?
Just so i'm understanding how the smps works right, is it possible to take the secondary of the toroid on the board and connect it to a bridge rectifier and capacitors and resistors like a normal transformer? IE the rest of the circuit just converts the DC voltage to an AC voltage and after the transformer it's just like working like normal AC from the wall albeit at a lower voltage?
NO, bridge rectifier is several 100 times too slow for this, also you don't need that much capacitance, not even close
this smps takes DC for its input, then it is switched from one to other side (two primarys), trafo is seeing high freq. AC, which is transformed up or down, rectified to get it back to DC... you can't use 50-60Hz elements here, nor do you need them (capacitors being so big),
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Hi
Hi
The R is remote control, which must be connected to 12 volts supply in order to start working the SMPS, also you can use any ultra fast diodes for SMPS.
Hi
The R is remote control, which must be connected to 12 volts supply in order to start working the SMPS, also you can use any ultra fast diodes for SMPS.
Hi
The holes for protections are placed in order to use different size relays, see the schematic in order to understand how you can connect the relay.
The holes for protections are placed in order to use different size relays, see the schematic in order to understand how you can connect the relay.
Hi
Hi
In order to rise the power you should use more mosfet's.
I cant understand
If the current consumption is 15A and voltafe is 14.4v max power is about 230W. So how we get 240W?
Hi
In order to rise the power you should use more mosfet's.
Hi
NO, the project is done by separate PCB, I will put picture with directions of putting together all PCB's + Service Manual of KAC-716
Currently I am updating my web site www.electronica.mk and there you will find pcb, schematic, protel (altium) file etc...
Soon, currently the web site is updating... it will be ready for one month!
NO, the project is done by separate PCB, I will put picture with directions of putting together all PCB's + Service Manual of KAC-716
Currently I am updating my web site www.electronica.mk and there you will find pcb, schematic, protel (altium) file etc...
Soon, currently the web site is updating... it will be ready for one month!
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