Build Your Own Clone Message Board

ARMSTRONG TWIN INSTRUCTIONS<---click here

Armstrong Twin Board



Armstrong Twin Schematic



Parts List

R1 - 560K
R2 - 150K
R3 - 18K
R4 - 6.2K
R5 - 10K
R6 - 10K
R7 - 68K
R8 - 68K
R9 - 22K
R10 - 22K
R11 - 10K
R12 - 47K
R13 - 82K
R14 - 2.4K
R15 - 470K
R16 - 390K
R17 - 470K
R18 - 10K
R19 - 220K
R20 - 470K
R21 - 100K
R22 - 1.5K
R23 - 4.7K LED
R24 - 2.2M

VR1 - 10K Trim
VR2 - A100K

D1 - 1N914
D2 - 1N914
D3 - 1N34A
D4 - 1N4001

Q1 - 2N5088
Q2 - 2N6523
Q3 - 2N5088
Q4 - 2N5457
Q5 - 2N5457

IC1 - 4558 Dual Op-Amp

C1 - .047uf
C2 - .047uf
C3 - .047uf
C4 - 0.1uf
C5 - .047uf
C6 - 4.7uf Electrolytic
C7 - .047uf
C8 - .0022uf
C9 - 4.7uf Electrolytic
C10 - 4.7uf Electrolytic
C11 - 1.0uf Electrolytic
C12 - 3.3uf Electrolytic
C13 - 10uf Electrolytic
C14 - 100uf Electrolytic

Thanks goes to Stephen for the schematic and board

_________________
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important - C.S. Lewis