Elenco Electronics K-20, Сборка и инструкция по эксплуатации

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PARTS LIST
If you are a student, and any parts are missing or damaged, please see instructor or bookstore.
If you purchased this nerve tester kit from a distributor, catalog, etc., please contact Elenco Electronics
(address/phone/e-mail is at the back of this manual) for additional assistance, if needed.
Parts Verification
Before beginning the assembly process, familiarize yourself with the components and this instruction book.
Verify that all of the parts are present. This is best done by checking off each item in the box provided next to
the part in the parts list.
RESISTORS
Qty. Symbol Description Color Code Part #
1 R1 470
W
5% 1/4W yellow-violet-brown-gold 134700
1 R2 47k
W
5% 1/4W yellow-violet-orange-gold 154700
SEMICONDUCTORS
Qty. Symbol Description Part #
1 SCR1 SCR C106B 319106
1 D1 Diode LED red 350002
MISCELLANEOUS
Qty. Symbol Description Part #
1 T1 Transformer 442100
1 P1 Double Sided PC Board 510320
1 PC Board 518020
1 S1 Switch Push Button 540100
1 S2 Switch Slide 541102
1 Solder Roll 24” 551124
1 B1 Battery Snap 590098
2 Wire 9” 814920
1 H1 Wire 9” Bare 845000
-1-
Resistor Transistor
PARTS IDENTIFICATION
Battery Snap
LED Switches
SCR
Slide
Push Button
Transformer
IDENTIFYING RESISTOR VALUES
Use the following information as a guide in
properly identifying the value of resistors.
BANDS
1 2 Multiplier Tolerance
PC Board
Double Sided
PC Board
OR