104 lines
5.1 KiB
Plaintext
104 lines
5.1 KiB
Plaintext
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[Ctrl-S Stop/Start] [Spacebar to Exit]
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U/L'ed by The Masked Squirrel
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Call: The Squirrel's Lair-=> 606-341-8204 1200 only/AE/indv pw
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Maharaja's Hi-Times 10 MEG BBS C/F
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<Call> (702)-832-7469
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Formatted for 80 columns.
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$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$$ $$
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$$ ***************** $$
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$$ * How to make a * $$
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$$ ***************** $$
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$$ $$
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$$ <> Pearl Box <> $$
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$$ $$
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$$ Written and created by: Dr. D-Code $$
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$$ $$
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$$ Edited by: Dispater (because the info in this file was fucked.) $$
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$$ (At lest now it doesn't blow itself up.) $$
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$$ $$
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$$ (Sysops may use this information if it's not altered in any way at all) $$
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$$ $$
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$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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[Dispater's Note]: This box was fuckin bullshit in it's original form. I
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made the schematic easier to undertand and added the resistor so the
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damn thing doesn't blow the transistor every fucking time. I must have
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went through 5 of 'em. It is important to keep in mind thatas the
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voltage drops in the batter the tone calibration will change. The
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only way to stop this is to have a DC power supply. One last thing.
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Don't waist your money on cheap ass parts at Radio Shack.
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The Pearl Box:Definition - This is a box that may substitute for many boxes
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which produce tones in hertz. The Pearl Box when operated correctly can pro-
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duce tones from 1-9999hz. As you can see, 2600, 1633, 1336 and other crucial
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tones are obviously in its sound spectrum.
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Materials you will need in order to build The Pearl Box:
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========================================================
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C1, C2::::::::.5mf or .5uf ceramic disk capacitors
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Q1::::::::::::NPN transistor (2N2222 works best)
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S1::::::::::::Normally open momentary SPST switch
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S2::::::::::::SPST toggle switch
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B1::::::::::::Standard 9-Volt battery
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R1::::::::::::Single turn, 50k potentiometer
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R2:::::::::::: " " 100k potentiometer
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R3:::::::::::: " " 500k potentiometer
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R4:::::::::::: " " 1meg potentiometer
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R5::::::::::::10k-ohm 1/2-watt Resistor
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SPKR::::::::::Standard 8-ohm speaker
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T1::::::::::::Mini transformer (8-ohm works best)
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Misc.:::::::::Wire, solder, soldering iron, PC board or perfboard, box to
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contain the completed unit, battery clip
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Schematic for building The Pearl Box:
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=====================================
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S2
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_/_ (neg) (pos)
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+--------------------|___|---------------[ B 1 ]+
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! __ /| !
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+-------+---------------+ +-----------| | !
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C1 ! C1 +---+T1| | | (speaker) !
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!\ ! ! ! +__+-----S1----| | !
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! ! e ! ! ! \| !
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! ! Q1c-+---------------+ !
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! +-b ! !
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! +--------------------------------+
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! /
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! \ R5
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! /
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! +
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! R1 R2 R3 R4 !
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/\/\ /\/\ /\/\ /\/\ !
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+--+ +--+ +--+ +--+
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The potentiometer area is rigged so that the left pole is connected to
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the center pole of the potentiometer next to it.
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Correct operation of The Pearl Box:
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===================================
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R1 is the knob for the ones place, R2 is for the tens place, R3 if for the
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hundreds place and R4 is for the thousands place. S1 is for producing the all
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the tones and S2 is for power.
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Step 1: Turn on the power and adjust the knobs for the desired tone.
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(Example: For 2600 hz- R1=0:R2=0:R3=6:R4=2)
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Step 2: Hit the pushbutton switch and VWALA! You have the tone. If you don't
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have a tone recheck all connections and schematic. If you still don't have
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a tone call Brainstorm BBS:612-345-2815, The Bay:415-775-2384 or Pirate's
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Harbor:617-720-3600 and leave me e-mail stating what the scene is.
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______________________________________________________________________________
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This has been a High Mountain Hackers presentation - 1985
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Edited, like it or not. - 1989
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______________________________________________________________________________
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[Ripco] Which 1-50 ?=menu,<CR>=abort: |