• The swap meet forum is for private non-commercial transactions. Only unmoderated members can post here.

    diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members. Use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

FS PCB clearance: Headphone Amps, D-Noizator PSU, MOD output delay, Ground Isolator..

I have a few spare PCB's. These are extra boards which I have left over from a fabrication run (due to minimum order requirements) and are therefore sold for DIY purposes only and not for commercial gain. They are to cover board, build and shipping costs to me, not for profit. Once they are gone, they are gone.

PAYMENT AND SHIPPING:
  • Payment by Paypal "Friends and Family".
  • UK - Free untracked P&P for orders over £5, additional fee for Signed-For.
  • EU / USA / Rest Of World - As per Royal Mail: Get a price | Royal Mail Group Ltd, additional fee for tracked.
  • Payment within 48 hours before being released from reserve.
  • Please reply here followed by a pm if interested.


Die-Noizator 5-36V Linear PSU, PCB designed by me, schematic by Elvee/diegomj1973
D-Noizator: a magic active noise canceller to retrofit & upgrade any 317-based V.Reg.
Single rail positive PSU 5-36V.
Onboard transformer solution (Talema/Amveco/RS Pro toroidal series).
EMI filter, transformer snubber, CRC, LM317, Sziklai Pair Die-Noizator. Extremely low noise PSU.
These are my latest revision (2.1) with compatibility with 110V or 240V mains voltage.
Transformer secondaries can be jumpered parallel or series.
None available £7 each, 100g 'Letter'
  • 2x kcom00 (AUS) Dispatched 20th August
  • 2x jimk04 (UK) Dispatched 20th August
  • 2x mgb1965 (GER) Dispatched 20th August
  • 1x sq225917 (UK) Dispatched 7th September
  • 1x Mituisho (UK) Dispatched 13th September

Die-Noizator 5-36V, PCB designed by tombo56, schematic by Elvee/diegomj1973
D-Noizator: a magic active noise canceller to retrofit & upgrade any 317-based V.Reg.
Single rail positive PSU 5-36V
Offboard transformer.
None available £4 each, 100g 'Letter'
  • 2x kcom00 (AUS) Dispatched 20th August
  • 1x kffern (AUS) Dispatched 20th August

Objective 2 Headphone Amplifier designed by NwAvGuy
NwAvGuy: O2 Details
7x available £8 each, 100g 'Letter'


Passlabs ACP+ Headphone / Pre-Amplifier Clone, PCB designed by withmatt
Amp Camp Pre+Headphone Amp - ACP+
None available- £12 each, 200g 'Letter'
  • 1x mgb1965 (GER) Dispatched 20th August
  • 1x Peppe (SWE) Dispatched 1st September
  • 1x Piisami (FIN) Dispatched 1st September
  • 1x M_Balou (GER) Dispatched 1st September

MOD: Mini Output Delay for Headphone / Line-level Audio designed by me
MOD: Mini Output Delay - a headphone / line-level audio output delay retrofit PCB
A miniature 2x3cm retrofit board to protect headphones from turn-on/off power transients.
12-35V power input. 0-30 seconds adjustable delay time.
10+ available £4 each, 100g 'Letter'
  • 2x mgb1965 (GER) Dispatched 20th August
  • 2x Gregje (UK) Dispatched 10th September
  • 2x Mituisho (UK) Dispatched 13th September
  • 2x SigFire (GER) Dispatched 21st September
  • 4x s666foto (NED) Awaiting Payment

Ground Breaking: Earth Loop / Audio Ground Isolator designed by me
A 2x3cm board that helps reduce hum in audio circuits that are attached to a mains earth connection.
x5 available £3 each, 100g 'Letter'
  • 2x kcom00 (AUS) Dispatched 20th August
  • 5x truepaul (USA) Dispatched 26th August
  • 2x Neat Ripple (UK) Dispatched 28th August
  • 2x Slinkymalinky (UK) Dispatched 4th September
  • 2x avinunca (UK) Dispatched 5th September
  • 2x sq225917 (UK) Dispatched 7th September
  • 2x Mituisho (UK) Dispatched 13th September
  • 2x SigFire (GER) Dispatched 21st September

Alps RK27 Blue Velvet Breakout / Mounting Board designed by Nisbeth
A breakout board for mounting Alps RK27 volume potentiometer.
10+ available £3 each, 100g 'Letter'
  • 2x Neat Ripple (UK) Dispatched 28th August

8-Pin SOIC or MSOP/(T)SSOP to DIP Adapter
A miniature board to mount SOIC or MSOP/(T)SSOP integrated chips into DIP sockets. Perfect for op-amp rolling.
10+ available £2 each, 100g 'Letter'
  • 2x mgb1965 (GER) Dispatched 20th August

CheapModo Snubber Calculator designed by Mark Johnson
CheapoModo: quick and dirty transformer snubber bellringer jig
A quick and dirty transformer snubber bellringer jig to calculate optimum snubber resistance values.
None available £4 each, 100g 'Letter'
  • 1x kcom00 (AUS) Dispatched 20th August
  • 1x M_Balou (GER) Dispatched 1st September
 

Attachments

  • IMG_7980.jpg
    IMG_7980.jpg
    1,005.2 KB · Views: 917
  • IMG_8011.jpg
    IMG_8011.jpg
    816 KB · Views: 893
  • IMG_7982.jpg
    IMG_7982.jpg
    990.8 KB · Views: 879
  • PCB-O2.jpg
    PCB-O2.jpg
    989.7 KB · Views: 854
  • IMG_7984.jpg
    IMG_7984.jpg
    886.3 KB · Views: 824
  • IMG_7995.jpg
    IMG_7995.jpg
    813.3 KB · Views: 291
  • IMG_7986.jpg
    IMG_7986.jpg
    945.5 KB · Views: 280
  • IMG_7997.jpg
    IMG_7997.jpg
    957.3 KB · Views: 289
  • IMG_7991.jpg
    IMG_7991.jpg
    459.2 KB · Views: 297
  • PCB-RK27.jpg
    PCB-RK27.jpg
    638.1 KB · Views: 295
Last edited:
More information about Die-Noizator

A bit of information about my Die-Noizator PSU.

It is a single positive rail design with onboard transformer (Talema-style). It can output 5-36V as per LM317 specification. It uses Sziklai pair as part of the D-noizator noise reduction circuitry. Heatsink is suitable for 1A and is perfect for line-level circuits / DACs. The latest revision built up for 24v is:

GHqXh3l.jpg
MtdvTnx.jpg
q0Tu3wP.jpg
jJwoRa6.jpg


I added some primary pads to make my PCB compatible with 110V mains.

wJuMD1r.jpg


This revision also include the RESR resistor for tweaking the output impedance if required (although default is to jumper with Panasonic FC or Nichicon UPW 100uF 63v). The picture below socketed for easy swapping:

MeJdZcv.jpg


JUMPERS PRIMARY:
110V connect PA to PB and PC to PD
240V connect PB to PC only

XW8uK44.jpg


JUMPERS SECONDARY:
Parallel connect SA to SB and SC to SD
Series connect SB to SC only

Bts0DgV.jpg
 

Attachments

Last edited:
A bit of information about Ground Breaking: Earth Loop / Audio Ground Isolator

A bit of information about Ground Breaking: Earth Loop / Audio Ground Isolator designed by me

It is a miniature PCB (23x32mm) that helps reduce hum in audio equipment that is attached to a dirty mains earth connection, caused by ground loops. It requires only 3 components:

  • 3W 10ohm resistor
  • 0.01uF to 0.1uF capacitor
  • Diode bridge, 20A or above, GBI25G or GBJ25G package

q9DU8VQ.jpg
T6cw04p.jpg
nNiQDI9.jpg
vS3kxu6.jpg
 

Attachments

  • Ground1.png
    Ground1.png
    12.8 KB · Views: 148