MP3 Adapter for TV

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We have designed a fairly compact adapter that lets you connect an MP3 player (or any other portable device) to the SCART socket of a TV. It is obvious that this will only work if the TV has a SCART socket!
The board directly feeds the headphone signals to the correct SCART pins. If the TV only has mono sound, then the left input signal is probably used. The connection between the adapter and TV is made with a SCART cable. It is best to make your own lead for the connection of the headphone signals. There are three pins on the board for the signal connections (L, R and ground).

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Materials

054035-PCB.pdf

054035-11.zip

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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PCB

Download Gerber file: 054035-1.zip

Component list

Resistors:
R1,R2 = 1k
R3,R4 = 2k2
R5 = 270
R6,R7 = 100
R8 = 100k
R9 = 3k3
Capacitors:
C1,C2 = 22pF
C3-C7 = 100nF ceramic, lead pitch 5mm
C8,C9 = 10µF 63V radial
C10 = 220µF 25V radial
Inductor:
L1 = 10µH
Semiconductors:
D1 = LED, low-current
D2 = 1N4002
IC1 = EPM7064SLC44-10 PLC44 with socket (programmed, Publisher’s order code 054035-31 *)
IC2 = 7805
Miscellaneous:
JP1 = 3-way SIL header with jumper
K1 = SCART socket (female), PCB mount, angled
K2 = 10-way boxheader
X1 = 10MHz quartz crystal
PCB, Publisher’s order code 054035-1
EPM7064 code