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G8MNY  > TECH     02.11.07 09:33l 70 Lines 3128 Bytes #999 (0) @ WW
BID : 34175_GB7CIP
Read: DK5SG GUEST OE7FMI
Subj: Lab Breadboard
Path: DB0FHN<DB0RGB<DB0SL<DB0FSG<I4UKI<HB9TVW<IK2XDE<DB0RES<DK0WUE<ON0BEL<
      GB7CIP
Sent: 071102/0119Z @:GB7CIP.#32.GBR.EU #:34175 [Caterham] $:34175_GB7CIP
From: G8MNY@GB7CIP.#32.GBR.EU
To  : TECH@WW

By G8MNY                                  (New Nov 07)
(8 Bit ASCII Graphics use code page 437 or 850)
Many years ago I bought a scrap AT102 Digital Lab by "A-Tek". It is a mains
powered electronics breadboard laboratory using 0.5mm wire connectors. I have
use it quite a bit, but there is no reasion why anyone could not build up there
own version of breadboard lab.
     _________________________________               ñ5V <ÄÂÄÄÄ¿
    ³          Raised Top            ³\            ñ0-18 <Ä´PSUÃ<Off/onÄ Mains
    ³________________________________³  \       5V float <ÄÁÄÄÄÙ
     \  onø    (o)       7seg    DVM  \   \
      \offø   Freq       8 8    +1.99  \    \       Sine <ÄÂÄÄÄ¿
       \     O    O    12345678     O   \     \ Traingle <Ä´OSCÃÄ<ñ5V
        \  Band  Level   LEDs    Range   \    Ý   Square <ÄÁÄÄÄÙ<Freq
        ³~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~³   Ý
        ³ + var - .JK. [DIP] (o)(o)(o)(o) ³ B Ý      Range ÚÄÄÄ¿
  PSUs  ³ O  V  O ........ ... .  .  .  . ³ aÞ             ³DVMÃÄ<Float 5V
        ³       :ÚÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄ¿³ sÞ     Input >ÄÁÄÄÄÙ
        ³       :³ úúúúú ³ úúúúúú ³      ³³ eÞ
 Volume ³ O Afú :³:±± ±±:³:±±  ±±:³      ³³  Ý    Volume >ÄÂÄÄÄ¿
        ³       :³:±± ±±:³:±±  ±±:³Bread-³³LSÝ             ³AmpÃÄ<ñ5V
Switches³ !!!!  :³:±± ±±:³:±±  ±±:³boards³³  Ý        LS <ÄÁÄÄÄÙ
        ³       :³:±± ±±:³:±±  ±±:³      ³³ Þ
        ³       :³:±± ±±:³:±±  ±±:³      ³³ Þ       LEDs <ÄÂÄÄÄÄÄÄÄ¿
Switches³  ! !  :³:±± ±±:³:±±  ±±:³      ³³ Þ              ³DriversÃÄ<+5V
        ³       :³:±± ±±:³:±±  ±±:³      ³³ Ý     Inputs >ÄÁÄÄÄÄÄÄÄÙ
        ³       :³:±± ±±:³:±±  ±±:³      ³³ Ý   
   Push ³  o o  :³ ..... ³ ...... ³      ³³ Ý    Switches Ä< ñ5V
 Buttons³       :ÀÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÙ³Þ
        ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÙ    Flip O/P <ÄÂÄÄÄ¿
                                                           ³J KÃÄ<+5V
                                                   Input >ÄÁÄÄÄÙ

POWER SUPPLY: a multi wound & tapped transfomer provides DC voltages to various
regulators to give;-   Fixed: +5V DC @ 2A max, & -5V DC @ 500mA max. A floating
+5V for the DVM, Variable: 0 +18V DC @ 800mA max, & 0 -18V DC @ 500mA max. 

OSCILLATOR: 1Hz - 100KHz in 4 decade ranges. output:-
Square, & Ramp Outputs ñ5V. Sine output variable to ñ3V constant level with
filtered buffer amp.

AF AMPLIFIER & LS: (added by me)  High gain audio monitor amplifier & gain
control with internal LS or 1W into 8ê 3.5mm output jack. 100k input Z.

LOGIC TOOLS:
4 logic level switches 0 5V,
2 centre off logic level switches -5 0+5V,
2 Press buttons +5v or 0V pressed.
A J-K Flip Flop gate.
8 data display LEDS with drivers, +5V for on.
2x 7 segment displays with drivers.

COMPONENT PATCH BREAD BOARDS 
Two 48 row component boards for 0.5mm wires etc.
For 0.4" DIL ICs, bus surround. & for 0.2" DIL ICs, bus surround.

EXTERNAL CONNECTION CONVERTERS
Four 4mm wander sockets to wire sockets.

3« DIGIT DC VOLT METER
Isolated meter, 10Mê Input.
Ranges 0-200mV, 0-2V, 0-20V, 0-200V.


Why don't U send an interesting bul?

73 De John, G8MNY @ GB7CIP


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