PARTS LIST for BOB BECKS 4 HZ BLOOD PURIFIER

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)

RESISTORS

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)

CAPACITORS

0.1 MFD CERAMIC CAPACITOR

MISCELANEOUS

1 Control Knob for potentiometer shaft. Any ¼” hole size knob will usually work. I like the Radio Shack ones with numbered dials on them.

3 9 VOLT BATTERIES, NIMH RECHARGEABLES ARE BEST, ALKALINES OK

3 BATTERY SNAPS (TERMINALS TO CONNECT TO BATTERIES) HI QUALITY.

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 STRAND TO USE AS PLUG IN WIRING, SEE PHOTOS

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

EXTRA SPEED, FREQUENCY PARTS:

1 22 MFD CAPACITOR (GIVES ONE CHANGE EVERY 30-40) SECONDS

1 600 K OHM RESISTOR, OR EQUIVALENT SMALLER ONES TO DAISY CHAIN (THE SUM OF RESISTANCE=600K) THIS GIVES 16 HERTZ WHEN USED WITH THE .1 MFD CAPACITOR.

1 85 K OHM RESISTOR, OR EQUIV, TO GIVE 100 HERTZ, APPROX.