Hi,
you only need one output ground link. This PSU Zero Volts is NOT the Main Audio Ground.
Take a lead from PSU Zero Volts to your Main Audio Ground.
Take all other references to the Main Audio Ground.
Do not take all the amps voltage references to the PSU !!!!!!
you only need one output ground link. This PSU Zero Volts is NOT the Main Audio Ground.
Take a lead from PSU Zero Volts to your Main Audio Ground.
Take all other references to the Main Audio Ground.
Do not take all the amps voltage references to the PSU !!!!!!
Nice work, if you want star ground on psu pcb make new holes, thank you for clear pictures.
Regards
GREAT AMP
ORIGINAL SCHEMATIC (almost the same) has been used in legendary UK HH amplifiers played by Rollingstones back in 70's
I got an original board please take a look, it is a beauty...
ORIGINAL SCHEMATIC (almost the same) has been used in legendary UK HH amplifiers played by Rollingstones back in 70's
I got an original board please take a look, it is a beauty...
Question on Power Supply
Hi,
I have home made power supply for my amplifier.
It was manually turn by my self.
The secondary output were 60 0 63 volts ac.
After rectified output voltage becomes 84.6 0 84.6 volts dc.
Is this ok since secondary ac is not equal but after it was rectified it become equal voltages on the DC.
Need expert advice here.
regards.
Ronald
Hi,
I have home made power supply for my amplifier.
It was manually turn by my self.
The secondary output were 60 0 63 volts ac.
After rectified output voltage becomes 84.6 0 84.6 volts dc.
Is this ok since secondary ac is not equal but after it was rectified it become equal voltages on the DC.
Need expert advice here.
regards.
Ronald
Yes you get equal DC voltages (higer) on caps after rectified, you can disconnect 60 volts ac and with single 63 volts you still have +/-84.6 volts dc.
Regards
Hi Apex,
So can I used my transfo with 60 0 63 ac with bridge diode to have strong current to my amplifier? Output DC becomes +-84.6 volts.
I just concern on the un balance ac voltage on the secondary winding.
Anyway is this safe?
Best regards,
Ronald
So can I used my transfo with 60 0 63 ac with bridge diode to have strong current to my amplifier? Output DC becomes +-84.6 volts.
I just concern on the un balance ac voltage on the secondary winding.
Anyway is this safe?
Best regards,
Ronald
power supply for HH amp output stage
You have to make sure to have 60 0 60 otherwise you will have unstability. If you mak amp using this schematic (I will post it later) +-84 V DC is fine if output transistors have VCO 120+ (use 2N3773 or better Japanese audio transistors)
You have to make sure to have 60 0 60 otherwise you will have unstability. If you mak amp using this schematic (I will post it later) +-84 V DC is fine if output transistors have VCO 120+ (use 2N3773 or better Japanese audio transistors)
Yes you can use it. Voltage is to high for this amp, what is your amp, do you considering to use Regulated PSU?
Regards
Hi, Apex.. i've try the regulated supply with a chinese kit (jims audio) that i couldn't make work correctly. Surprise !! works good now ! too much trebble for my taste, too cristalin ; but that'is a other story ! (Kef104AB).
Now i have to try one of your amp ...AX14 or FX100 ???
Now i have to try one of your amp ...AX14 or FX100 ???
Use schematic from post #351 http://www.diyaudio.com/forums/solid-state/164093-100w-ultimate-fidelity-amplifier-36.html
Ok for AX14; board is etched this morning . Some components are already soldered, have to wait for others. Can i use 33uf/63V in place of 22uf /63V ? i've them .
Regards.
Regards.
Attachments
apex.i build this ax14 amp.but,its not work.my problem is when i connect speaker.resistor side 2sc5200 become very hot.and when i check ac voltage at output.its have high voltage.what must i do?how to check bjt with multimeter?
plez check apex.now i disconnect diode at power output.sorry picture not good quality
