transformer board
for the Audio DAC 2000 and many other circuits
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
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Component list
C1,C2,C3 = 100nF 275VAC class X2, raster 15mm
Inductors:
L1,L2 = 2 x 27mH/0.4 A e.g., Siemens type B82721-K2401-N21
Miscellaneous:
K1 = 2-way PCB terminal block, raster 7.5mm
K2 = 3- way PCB terminal block, raster 5mm
K3,K4 = 2- way PCB terminal block, raster 5mm
F1,F2 = fuse 32 mAT (slow), with PCB mount holder
Tr1 = PCB mount mains transformer
2 x 15 V/4 VA, e.g., Block FLD4/15; Hahn BV UI 302 0165; Monacor FTR-415. *
Tr2 = PCB mount mains transformer 2 x 8 (or 9)V/4 VA, e.g., Block FLD4/8 or FLD4/9; Hahn BV UI 302 0161; Monacor FTR-49.
PCB, order code 000001-1
*) Hahn and Monacor series not short-circuit resistant. Block series short-circuit resistant.
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