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G8MNY  > TECH     19.01.19 09:30l 79 Lines 3543 Bytes #9 (0) @ WW
BID : 55256_GB7CIP
Subj: Lab Breadboard
Path: ED1ZAC<ED1ZAC<IZ3LSV<IK6ZDE<I0OJJ<GB7CIP
Sent: 190119/0825Z @:GB7CIP.#32.GBR.EURO #:55256 [Caterham Surrey GBR]

>From g8mny%gb7cip.#32.gbr.euro@i0ojj.ampr.org Sat Jan 19 09:27:11 2019
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From: G8MNY@GB7CIP.#32.GBR.EURO
To  : TECH@WW

By G8MNY                                  (Updated Nov 07)
(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)

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 a breadboard lab.
                                                       5V <Ŀ
     _________________________________               0-18 <ĴPSU<Off/onMains
              Raised Top            \           5V float <
    ________________________________  \
     \  on    (o)       7seg    DVM  \   \           Sine <Ŀ
      \off   Freq       8 8    +1.99  \    \     Traingle <ĴOSC<5V
       \     O    O    12345678     O   \     \     Square <<Freq
        \  Band  Level   LEDs    Range   \    
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~           Range Ŀ
         + var - .JK. [DIP] (o)(o)(o)(o)  B             >ĴDC DVM<Float 5V
  PSUs   O  V  O ........ ... .  .  .  .  a      Inputs >
               :Ŀ s
               :           e      Volume >Ŀ
 Volume  O Af :: ::  :                       Amp<5V
               :: ::  :Bread-         LS <
Switches !!!!  :: ::  :boards  
               :: ::  :                LEDs <Ŀ
               :: ::  :                       Drivers<+5V
Switches  ! !  :: ::  :              Inputs >
               :: ::  :       
               :: ::  :           Switches < 5V
   Push   o o  : .....  ......        
 Buttons       :ٳ   Flip Output <Ŀ
                         J K<+5V
                                                     Input >

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, Variables: 0 to +18V DC @ 800mA max, & 0 -18V DC @ 500mA max.

OSCILLATOR: 1Hz - 100kHz in 4 decade ranges. output:-
Square, & Ramp Outputs 5V. Sine output variable to 3V constant level with
filtered (added by me) buffer amp.

AF AMPLIFIER & LS: (added by me) High gain audio monitor amplifier & gain
control with internal LS or 1W into 8 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 0.5mm wire sockets.

3 DIGIT DC VOLT METER
Isolated meter, 10M 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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