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================ = THE PEARL BOX= ================ IN 80 COLOMN FORMAT TRUM. MATERIALS YOU WILL NEED IN ORDER TO BUILD THE PEARL BOX: ======================================================== C1, C2--------.5MF OR .5UF CERAMIC DISK CAPACITORS Q1------------NPN TRANSISTOR (2N2222 WORKS BEST) S1------------NORMALLY OPEN MOMENTARY SPST SWITCH S2------------SPST TOGGLE SWITCH B1------------STANDARD 9-VOLT BATTERY R1------------SINGLE TURN, 50K POTENTAOMETER R2------------ " " 100K POTENTIOMETER R3------------ " " 500K POTENTIOMETER R4------------ " " 1MEG POTENTIOMETER SPKR----------STANDARD 8-OHM SPEAKER T1------------MINI TRANSFORMER (8-OHM WORKS BEST) MISC.---------WIRE, SOLDER, SOLDERING IRON, PC BOARD OR PERFBOARD, BOX TO CONTAIN THE COPLETED UNIT, BA TTERY CLIP INSTRUCTIONS FOR BUILDING THE PEARL BOX: ======================================== SINCE THE INSTRUCTION ARE EXTREMELY DIFFUCULT TO EXPLAIN IN WORDS, YOU WILL BEGIVEN A SCHEMATIC INSTEAD. IT WILL BE QUITE DIFFUCULT TO FOLLOW BUT TRY IT ANYWAY. THERE IS ALSO A HI-RES PICTURE YOU CAN GET THAT SHOWS THE SCHEMATIC IN GREAT DETAIL. (SCHEMATIC FOR THE PEARL BOX) +-------------+------------+---------+ ! ! \ +--S1---- C1 C2 \ SPKR ! ! + +-------- + + ----+T1 + !\ +---------------+------+ ! B C-------! ! Q1 ! ! E-----S2---+ ! ! ! ! ! B1 ! ! ! ! ! +-------+ !R1 R2 R3 R4! /\/\ /\/\ /\/\ /\/\ +--+ +--+ +--+ NOW THAT YOU ARE PROBABLY THOURGHLY CONFUSED, LET ME EXPLAIN A FEW MINOR DE-TAILS. THE POTENTIOMETER AREA IS RIGGED SO THAT THE LEFT POLE IS CONNECTED TO THE CENTER POLE OF THE POTENTIOMETER NEXT TO IT. THE MIDDLE TERMINAL OF T1 IS CONNECTED TO THE PEICE OF WIRE THAT RUNS DOWN TO THE END OF THE BATTERY. CORRECT OPERATION OF THE PEARL BOX: =================================== YOU MAY WANT TO GET SOME DRY-TRANSFER DECALS AT RADIO SHACK TO MAKE THIS JOB ALOT EASIER. ALSO, SOME KNOBS FOR THE TOPS OF THE POTENTIOMETERS MAY BE USEFULTOO. USE THE DECALS TO CALIBRATE THE KNOBS. R1 IS THE KNOB FOR THE ONES PLACE, R2 IS FOR THE TENS PLACE, R3 IF FOR THE HUNDREDS PLACE AND R4 IS FOR THE THOUSANDS PLACE. S1 IS FOR PRODUCING THE ALL THE TONES AND S2 IS FOR POWER. STEP 1: TURN ON THE POWER AND ADJUST THE KNOBS FOR THE DESIRED TONE. (EXAMPLE: FOR 2600 HZ- R1=0:R2=0:R3=6:R4=2) STEP 2: HIT THE PUSHBUTTON SWITCH AND VWALA! YOU HAVE THE TONE. IF YOU DON'T HAVE A TONE RECHECK ALL CONNECTIONS AND SCHEMATIC. IF YOU STILL DON'T HAVE A TONE CALL BRAINSTORM BBS:612-345-28 15, THE BAY:415-775-2384 OR PIRATE'S HARBOR:617-720-3600 AND LEAVE ME E-MAIL STATING WHAT THE SCENE IS.