Vectronics VEC-221K - Manual (Page 14)

VEC-221K Instruction Manual CW Memory Keyer Kit
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! ! 4. Find the 10K ohm resistor (brown-black-orange). Install and solder at
location R1.
! ! 5. Locate the 1000 uH inductor or choke (brown-black-red). Pre-form
the leads in a similar manner as done for the resistors. Install and
solder at location L1.
! ! 6. Locate the 1N4007 rectifier diode. Note that the band indicates the
cathode lead end of the device. Pre-form the leads in a similar manner
as done for the resistors. Install and solder at location D1, be sure to
observe the silk-screened marking for the cathode lead orientation!
Cathode
1N4007
! ! 7. Locate the two 22 pF ceramic disc capacitors (marked 22 or 220).
Install and solder at the following locations:
! ! C1 22 pF ceramic disc capacitor (22 or 220)
! ! C2 22 pF ceramic disc capacitor (22 or 220)
! ! 8. Locate the seven 0.01 uF ceramic disc capacitors (.01 or 103
marking). Install and solder at the following locations:
! ! C10 0.01 uF ceramic disc capacitor (.01 or 103)
! ! C11 0.01 uF ceramic disc capacitor (.01 or 103)
! ! C12 0.01 uF ceramic disc capacitor (.01 or 103)
! ! C13 0.01 uF ceramic disc capacitor (.01 or 103)
! ! C14 0.01 uF ceramic disc capacitor (.01 or 103)
! ! C15 0.01 uF ceramic disc capacitor (.01 or 103)
! ! C20 0.01 uF ceramic disc capacitor (.01 or 103)
! ! 9. Locate the seven 0.1 uF ceramic disc capacitors (.1 or 104 marking).
Install and solder at the following locations:
! ! C3 0.1 uF ceramic disc capacitor (.1 or 104)
! ! C4 0.1 uF ceramic disc capacitor (.1 or 104)
! ! C5 0.1 uF ceramic disc capacitor (.1 or 104)
! ! C6 0.1 uF ceramic disc capacitor (.1 or 104)