Ramsey Electronics FX Series Manual page 58

at the factory have tried to help by grouping similar or related parts in
individual sealed bags. Sorting organizers popular among kit builders
include empty egg cartons, muffin tins, small box tops, or the corrugated
edges of box cartons. Since the assembly of this kit is presented in distinct
stages, some builders may prefer to group their parts by stage before
beginning assembly.
11. HELPFUL HINT: Many of the parts are supplied on tape strips cut from
bulk reels. Leave them taped, which keeps them nicely sorted for you. It is
NOT necessary to pull the entire lengths of both leads from the tape.
Simply nip the leads right at the edge of the tape, and you'll have plenty of
length to work with.
12. The .01 disc capacitors may be marked in any of the following ways: .01,
103 or 10n (nanofarads)
13. Similarly, .001 ufd. discs may be marked: .001, 102 or 1n(nanofarads)
14. The several .1 uf units required should be clearly recognizable and often
will have a rectangular rather than disc shape. Their markings may be .1
or 104.
15. Small picofarad values are clearly stamped on capacitor bodies. 100 pf.
units may be marked 100 or 101.
16. We tried to make it clear in both lists and assembly steps that some
components can have a RANGE of acceptable values, even though a
single value is indicated on the schematic, the control document for this
project. A rule of thumb is that a value within 10% of the stated value will
be fine: 2 or 2.2 pf, 4.7 or 5 pf, 200 or 220 ohm and so forth. 10 uf
electrolytics may be 4.7 to 10 uf. Remember that there's a reason for the
"tolerance" codes for all parts. Unless we scream in bold print that
something must be exact down to the last micro-henry, ohm or partial
picofarad, PLEASE assume the 10% rule in sorting through your kit parts!
17. Manufacturer stamping patterns can vary, and we sometimes need to use
simple logic and deduction to identify parts, particularly the extremely
common ones. For example: if your kit includes 3 identical transistors with
no apparent body marking at all, you may presume them to be the 3 PNP
transistors described as 2N3906, 228256 or equivalent.
18. Check your manual or kit package for any insert page advising that a part
identification or physical description has changed. We cannot control how
manufacturers may vary their product codes or colors of plastic.
19. Observe correct POLARITY when installing all diodes and electrolytic
capacitors!
20. Please review No. 1 above!