A-class Preamp PSU

[prasi]

ok, all the best for your build... please post your build...

 

[quadtech]

something i made just now.

wow - nice - looks like an X Wing fighter

 

[vargasmongo3435]

hey guys here is the first picture of the board I hope all goes smoothly

 

[clpk]

ok, all the best for your build... please post your build...

I'm recording your layout together with your Apex AX11 apex by Bimo layout. the PSU will power the AX11 preamp.
Thanks and greetings

 

[clpk]

hey guys here is the first picture of the board I hope all goes smoothly

It's great, congratulations

 

[andrewlebon]

Aclass power supply

Hello Apex audio
greetings which powersupply has better performance the
schematic in #256 or the schematic wich i have uploaded
i use the schematic with BF256 B mosfet
warm regards
Andrew

 

[prasi]

Hello Apex audio
greetings which powersupply has better performance the
schematic in #256 or the schematic wich i have uploaded
i use the schematic with BF256 B mosfet
warm regards
Andrew

can someone tell me upper and lower bf245 connection

 

[Hicoco]

APEX design A Class PSU with AC filtering, utilizing a CRCRC filter for my Preamp and RIAA.

 

[apexaudio]

LDO Regulated PSU

 

[sasek]

Simple Shunt PSU for Preamps

Hi.can share pcb for this psu.i need regulate to 15v for my preamp?

 

[Hicoco]

APEX START/STOP

Just a little bit adapted and modified. Board Have been tested. Gerber attached.

 

[sumeshak]

Soft start/AC loss?

Hi,
Do we have soft start and AC loss detection feature available?
Thanks and regards,
Sumesh

Just a little bit adapted and modified. Board Have been tested. Gerber attached.

 

[Hicoco]

Speaker Turn On Delay and DC Protector Board Set (V3)

 

[clpk]

here you go. they are mirrors. is it ok?

PS main caps are 20 mm dia and output caps are 13mm dia.

Hello, I set up the PSU with 1N4745 zener because I need + -15v, but this is in 17.5v and 17v. What should be changed to have + -15v?
The supply is + -24vac.

 

[apexaudio]

Hello, I set up the PSU with 1N4745 zener because I need + -15v, but this is in 17.5v and 17v. What should be changed to have + -15v?
The supply is + -24vac.

Use 1N4744

 

[JPS64]

Layout not safe, sorry!

JP

 

[clpk]

Use 1N4744

Thanks, made the replacement, PSU with 15.3v and 15.7v, working perfectly.

 

[Rumen]

Hi!
I'll appreciate if some one share the gerber files for the power supply board for APEX PREAMP P30ZF. Will make an order for boards and want also to make for preamp and PSU.

 

[marin cornel]

LDO Regulated PSU

Hello. I made the source of low power. I managed to adjust it without any problems. it is very stable. the question is: what current can it generate? I put the ammeter and it did not indicate more than 16mA. I expect it to be 100-200 mA.

 

[apexaudio]

Hello. I made the source of low power. I managed to adjust it without any problems. it is very stable. the question is: what current can it generate? I put the ammeter and it did not indicate more than 16mA. I expect it to be 100-200 mA.

You can load it with 500mA maximum current, 16mA is standby current.