HOW TO TEST YOURSELF
Materials needed:
shoe box
tape
nail
pointed knife
cheap wire stripper (if needed)
paper clip
Parts List
Item Radio Shack Catalog Number
(a) Ordinary light switch
(b) Potentiometer (variable resistor), 50k
ohms271-1716
(c) Knob to fit the potentiometer 274-428 (package of 2, you only
need one, or just wind some
masking tape around the shaft in a
wad)
(d) .1 microfarad ceramic disk capacitor 272-1432A
(e) .0047 microfarad ceramic disk ca-
pacitor (.005 will do)272-130
(f) MPS2907 PNP silicon transistor or
equivalent276-2023
(g) Audio output transformer 900 CT: 8
ohm273-1380
(h) 3 size AA batteries
(i) Battery holder for 4 AA's (3 AA battery
holder will do)270-391 has 2 wires coming away
from it, one red (for +), one black
(for -).
(j) Microclip test jumpers 278-017 (you need 6 packages of
two)Directions
- Get a shoe box, save the lid, photocopy the picture in this
book and tape it to the bottom (inside) of the box.