1 LM358, OR TL082 DUAL BIFET OP AMP (RADIO SHACK #276-1715)
1 EXPERIMENTOR 350
WHITE SOCKET BOARD (PLUG –IN TYPE, RADIO SHACK=ARCHER BRAND, OR EQUIVALENT)
1 2.4 MEGOHMS 1/4 WATT RESISTOR, OR TWO 1 MEGOHMS, AND ONE 400K (APPROX) OHMS (WIRE THESE DAISY-CHAINED, “IN SERIES”, EITHER END, IT DOESN’T MATTER WHICH)
1 150K OHMS 1/4 WATT RESISTOR
2 100K OHMS 1/4 WATT RESISTORS.
1 500K OHMS OR 100K OHMS LINEAR POTENTIOMETER, 500K IS BETTER, BUT 100K IS ORIGINAL SPECS. 500K ALLOWS VERY SENSITIVE PEOPLE TO USE IT EASIER. RECOMMENDED IF YOU CAN FIND ONE.
2 15K OHMS 1/4 WATT RESISTORS. USE ONE AT FIRST. TO ADJUST MAXIMUM OUTPUT, USE TWO “IN SERIES” TO REDUCE IT BY A FACTOR OF 2, OR USE TWO IN PARALLEL (ALONGSIDE EACH OTHER) TO DOUBLE THE OUTPUT.
SWITCHES
1 LITTLE TOGGLE SWITCH (OR ANY ON-OFF SWITCH)
0.1 MFD CERAMIC CAPACITOR
3 9 VOLT BATTERIES, NIMH RECHARGEABLES ARE BEST, ALKALINES OK
3
1 PLASTIC PROJECT
BOX (OPTIONAL), USE LARGE ENOUGH FOR BOARD, BATTERIES, ETC, BUT DON’T GO TOO
SMALL. I USE CAST ALUMINUM BOX.
1 ROLL OF INSULATED
WIRE, SINGLE
OPTIONAL: RADIO SHACK PRECUT WIRES KIT, HANDY LENGTHS STRIPPED AND READY TO PLUG IN.
2 STAINLESS STEEL COTTER PINS 3/32” X 1.5”
OPTIONAL BUT RECOMMENDED: PACKAGE OR LENGTH OF 1/8” HEAT SHRINK TUBING TO COMPRESS AND HOLD JOINTS BETWEEN WIRES AND ELECTRODES (CAN USE TAPE, BUT TUBING’S BETTER)
OPTIONAL: SOLDERING IRON WITH FINE POINT, SOLDER, BLACK ELECTRICAL TAPE.
1 PACKAGE OF 2” WIDE GAUZE
1 SPOOL COAT/BUTTON THREAD
4-6 FEET OF STRANDED WIRE, THIN LAMPCORD, ETC TO USE FOR ELECTRODE WIRES