Vectronics VEC-1012K - Manual (Page 12)

VEC-1012K Owner’s Manual
12
! ! Install 100 uF at C9 and solder.
This completes installation of all capacitors. Before moving on to the next phase
of construction, check the polarity of each electrolytic one more time to confirm
all six are installed correctly.
Find 1N751 zener diode--the only diode supplied with your kit. Like electrolytic
capacitors, zener diodes are polarized components and must be installed the
correct way. Diode polarity is indicated by the black band located at one end of
the glass body.
! ! Install the 1N751 at D1 so the banded end corresponds with the band
marked on the PC board (toward U1). Solder.
Locate the 2SC2498 plastic transistor and note its flat side. Position at Q1, as
indicated by the outline on the pc board. Gently pre-form the leads so the case is
spaced approximately .15" above the pc board surface when leads are fully
inserted (see below).
2SC
2498
! ! Install the 2SC2498 at Q1 and solder.
Your kit requires five (5) jumper wires. Each should be pre-formed from a bare
length of discarded component lead, as shown below. The approximate distance
between mounting holes is given to help you pre-form each one. When installed,
each jumper should lay flat against the PC board.
span
discarded lead end
! ! Make a jumper with a .2" span. Install at JMP1 and solder.
! ! Make a jumper with a .275" span. Install at JMP2 and solder.
! ! Make another jumper with a .275" span. Install at JMP3 and solder.
! ! Make a jumper with a .3" span. Install at JMP4 and solder.
! ! Make a second jumper with a .3" span. Install at JMP5 and solder.
! ! Locate the 10.7 MHz ceramic filter. It looks like a square disc-ceramic
capacitor with three pins on the bottom, and is marked 10.7J. This
component is not polarized, and it may be installed either way. Install at
FL1 and solder in place.