Vectronics VEC-1320K - Manual (Page 22)

VEC-1320K/1330K/1340K/1380K Owner's Manual
20
Locate two (2) 470 pF multilayer capacitors (471).
! ! 8. Install a 470 pF at C27 and solder.
! ! 9. Install a 470 pF at C28 and solder.
! ! 10. Find the 1000 pF (or .001 uF) multilayer capacitor (102). Install at
C24 and solder.
Find three (3) 4.7 uH molded chokes (yellow-violet-gold, silver or gold)
! ! 11. Install a 4.7 uH at L1 and solder.
! ! 12. Install a 4.7 uH at L2 and solder.
! ! 13. Install a 4.7 uH at L3 and solder.
Locate two T50-2 toroid coil forms (½" donut-shaped form, red color code).
Also, find the #24 enameled coil wire provided with your kit.
! ! 14. Wind thirty (30) turns of #24 enameled wire onto the T50-2 form.
Note that turns are counted inside the form, and each turn is pulled
tight before winding the next. Spread the windings out, distributing
over 80% of the form's circumference.
! ! 15. Trim each coil lead to ½" in length and tin with solder.
! ! 16. Wind a two-turn secondary link of hook-up wire over the center
portion of the primary winding (two turns passing through the center).
Install at T1, laying flat--as shown below. Save unused portion of
insulated wire--you will need 4" of insulated wire later.
Primary
Link
! ! 17. Solder T1 in place.
Find the #22 wire.
! ! 18. Wind 16 turns of #22 enameled wire on a T50-2 toroid form. Spread
windings for 80% coverage, and install at L4 in an upright position.