==Phrack Inc.== Volume Three, Issue 28, File 5/12


==Phrack Inc.==

 

Volume Three, Issue 28, File #5 of 12

 

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|| A Real Functioning PEARL BOX Schematic ||

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|| Written, Tested, and Used ||

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|| by Dispater ||

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|| July 1, 1989 ||

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Introduction: After reading the earlier renditions of schematics for the Pearl

Box, I decided that there was an easier and cheaper way of doing

the same thing with an IC and parts you probably have just

laying around the house.

 

 

What Is A Pearl Box and Why Do I Want One?

 

A Pearl Box is a tone generating device that is used to make a wide range

of single tones. Therefore, it would be very easy to modify this basic

design to make a Blue Box by making 2 Pearl Boxes and joining them

together in some fashion.

 

A Pearl Box can be used to create any tone you wish that other boxes may

not. It also has a tone sweep option that can be used for numerous things

like detecting different types of phone tapping devices.

 

 

Parts List:

 

CD4049 RCA integrated circuit

.1 uF disk capacitor

1 uF 16V electrolitic capacitor

1K resistor

10M resistor

1meg pot

1N914 diode

Some SPST momentary push-button switches

1 SPDT toggle switch

9 Volt battery & clip

and miscellaneous stuff you should have laying around the house.

 

 

State-of-the-Art-Text Schematic:

+ 16V 1uF -

_______________________________||_____

| ! ! || | _

| _______________________ |__________| |/| 8ohms

____|__|_____:__|__:__|_ | __________| | |

| 9 10 11 12 13 14 15 16 | | | |_|\|

| CD4049UBE | | |

|_1__2__3__4__5__6__7__8_| : | _

| | |__| |__| | |____________________|_________[-]

| | ! ! : [b]

| |__________________________| [a]

| : : | [t]

| ! 1N914 ! ! [t]

|___________|/|_____________________________________[+]

: |\| : :

| | |

| 10M | |

|___/\/\/\__| |

| | |

|_____||____| | <-- These 2 wires to the center pole

|| | | of switch.

.1uF 50V | |

| |

_______________________| |_____________________________

| ___[Toggle Switch]____________ |

| | | ___ |

| | | o o |

| | | /\/\/\___| |__|

|_/\/\/\____/\/\/\ | | ^ |

1K ^ | |____| ___ |

|___| | o o |

| /\/\/\___| |__|

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