INSTRUCTIONS \ TKB \ Main board

Main board

 

Main-Board

 

 

The main board is the brain of the TKB. This large board is pretty straight forward to build.

 

Part list –

 

RESISTORS

  • 16x 1k
  • 7x 10k
  • 17x 100K
  • 1x 124k
  • 1x 1M
  • 1x 220k
  • 1x 249k
  • 7x 330
  • 21x 33k
  • 7x 330k
  • 12x 430k
  • 1x 4k7
  • 5x 47k
  • 1x 499k
  • 1x 4M7
  • 1x  680
  • 1x 6k8
  • 8x 68k
  • 2x  680k
  • 1x 6M8
  • 1x 8k2
  • 2x  82k

 

CAPACITORS

  • 4x 22p
  • 2x  50p
  • 2x 100p
  • 1x 220p
  • 4x 1n
  • 2x  2n2
  • 26x 10n
  • 5x 100n SMD
  • 2x 10µ Electrolytic

 

SEMICONDUCTORS

  • 1x 4516
  • 1x 4520
  • 1x 4042
  • 3x 4050
  • 3x 4051
  • 2x 4069
  • 2x 4081
  • 1x MM74C150
  • 4x LM324
  • 1x PN4250
  • 9x PN5179
  • 6x 1n4148

 

TRIMMERS

  • 1x 10k
  • 1x 25k

 

Start with IC sockets and then resistors, followed by diodes and trimmers. Continue with mono block capacitors. Please note that the four 22pF caps down on the left hand side should be 100pF!

Next up is transistors, the original board uses 2n5179 which are hard to get, so they’re replaced with the now more common 2n3904. Finish it with the 2 polarized caps and the IDC headers.

 

Continue then to the pot mounting boards.


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