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-
-
- hOW TO BUILD A black box
-
-
- tO ALL WHO DARE --
-
- wHAT IS A black box? a black box
- IS A DEVICE THAT IS HOOKED UP TO YOUR
- FONE THAT FIXES YOUR FONE SO THAT WHEN
- YaU GET A CALL, THE CALLER DOESN'T GET
- CHARGED FOR THE CALL. tHIS IS GOOD FOR
- CALLS UP TO 1/2 HOUR, AFTER 1/2 HOUR
- THE fONE cO. GETS SUSPICIOUS, AND THEN
- YOU CAN GUESS WHAT HAPPENS.
-
- tHE WAY IT WORKS:
-
- wHAT THIS LITTLE BEAUTY DOES IS
- KEEP THE LINE VOLTAGE FROM DROPPING TO
- 10V WHEN YOU ANSWER YOUR FONE. tHE
- LINE IS INSTED KAPT AT 36V AOD IT WILL
- MAKE THE FOETHINK THAT IT IS STILL
- RINGING WHILE YOUR TALKING. tHE REASON
- FOR THE 1/2 HOUR TIME LIMIT IS THAT THE
- fONE co. THINKS THAT SOMETHIOG IS WRONG
- AFTER 1/2 AN HOUR OF RINGING.
-
- aLL PARTS ARE AVAILABLE rADIO
- sHACK. uSING THE LEAST POSSIBLE PARTS
- AND ARANGEMENT, THE COST IS $0.98 !!!!
- aND THAT IS PARTS FOR TWO OF THEMû!
- tALK ABOUT A DEAL! iF YOU WANT TO
- SPLURGE THEN YOU C2N GET A SMALL pc
- BOARD, AND A SWITCH. tHERE ARE TWO
- SCHEMATICS FOR THIS BOX, ONE IS FOR
- MOST NORMAL FONES. tHE SECOND O\E IS
- FOR FONES THAT DON'T WORK WITH THE
- û FIRST. iT WAS MADE FOR USE WITH A bELL
- tRIMLINE TOUCH TONE FONE.
-
- ** sCHEMATIC 1 FRR MOST FONES **
- ** led on: box on **
- from >--------------------green-> to
- line >--! 1.8K led !---red--> fone
- !--/\/\/\--!>--!
- ! û
- ------>/<-------
- ñWl spst
-
-
-
- pARTS: 1 1.8K 1/2 WATT RESISTOR
- 1 1.5V led
- 1 spst SWITCH
-
- yOU MAY JUST HAVE TWO WIRES WHICH YOU
- CONNECT TOGETHER FOR THE SWITCH.
-
-
- ** sCHEMATIC 2 FOR ALL FONES **
- ** led on: box off **
-
- from >---------------green-> to line >------- ---red--> fone
- ! led !
- -->/<--!>--
- ! !
- N G--/E/\/---
- 1.8K
-
- pARTS: 1 1.8K 1/2 WATT RESISTOR
- 1 1.5V led
- 1 dpst SWITCH
-
-
- - hERE IS THE pc BOARD LAYOUT THAT i
- RECOMMEND USING. iT IS NEAT AND IS
- VERY EASY TO HOOK UP.
-
- sCHEMATIC #1 sCHEMATIC #2
-
- ************** ****************
- * * * ------- *
- * --<led>--- * * ! ! *
- ô¨ * ! ! * * ! <switch> *
- * resistor ! * * ! ! ! *
- * ! ! * * ! ! / *
- * -------- ! * * !± ! \ *
- * ! ! * * ! <led>! / *
- * --switch-- * * ! !)\ *
- * ! ! * * ! ! / *
- ûûñ
û l * ! ! * f l * ! ! ! * f
- i>red- -red>o i>red- ---red>o
- n>-----green---->n n>-----green------>n
- e * * e e * * e
- ************** ****************
-
-
- û oNCE YOU HAVE HOOKED UP ALL THE
- PARTS, YOU MUST FIGURE OUT WHAT SET OF
- WIRES GO TO THE LINE AND WHICH GO TO
- THE FONE. tHIS IS BECAUSE OF THE FACT
- THAT led'S MUST BE PUT IN, IN A CERTAIN
- DIRECTION. dEPENDING ON WHICH WAY YOU
- PUT THE led IS WHAT CONTROLS WHAT WIRES
- ARE FOR THE LINE & FONE.
-
- hOW TO FIND OUT:
-
- hOOK UP THE BOX IN ONE DIRECTION
- USING ONEHSETIOF WIRES FOR LINE AND THE
- OTHER FOR FONE.
-
- NøÄ *notåQ~`f§R mOELH[PSWU¡H SHOULD BE
- SET TO SIDE CONNECTING THE LED.
-
- oNCE YOU HAVE HOOKED IT UPX ´HEN
- PICK UP THE FONE AND SEE IF THE led IS
- ON. iF IT IS, THE led WILL BE LIT. iF
- IS DOESN'T LIGHT THEN SWITCH THE WIRES
- E WHICH THEN LABEL THEM. *note* - iF
- NEITHER DIRECTIONS WORKED THEN YOUR
- SWITCH WAS IN THE WRONG POSITION. nOW
- LABLE THE SWITCH IN ITS CURRENT
- POSITION AS box on.
-
- hOW TO CSE HT:
-
- tHE PURPOSE OF THIS BOX IS NOT TO POEPLE WHO CALL YOU SO IT WOULD MAKE
- SENCE THAT IT CAN ONLY BE USED TO
- RECEIVE! CALLS. wHEN THE BOX IS *on*
- THEN YOU MAY ONLY RECIEVE CALLS. yOUR
- FONE WILL RING LIKE NORMAL AND THE led
- o THE FONE NOW, THEN THE led WILLANSWER
- LIGHT AND THE CALLER WILL NOT BE CHARGED.
- hANG UP THE FONE AFTER YOU ARE DONE
- TALKING LIKE NORMAL. yOU WILL NOT BE
- *û THE BOX IS ON, SO TURN THE BOX *off*
- FOR NORMAL CALLS. i DON'T RECOMMEND
- THAT YOU LEAVE IT ON ALL THE TIME, AS
- YOU DON'T WANT IT TO LSWER`WH¦$µA
- bELL CALLS!
-