Ramsey Electronics FZ-146 Specifications download pdf (Page 69)

FX-146 • 69

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!

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 144 145

No comments

Ramsey Electronics FZ-146 Specifications Page 69