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G8MNY  > TECHNI   14.10.21 10:30l 78 Lines 3529 Bytes #999 (0) @ WW
BID : 50047_GB7CIP
Subj: Lab Breadboard
Path: PI8DRE<PI8CDR<DB0RES<DB0ERF<DK0WUE<GB7CIP
Sent: 211014/0819Z @:GB7CIP.#32.GBR.EURO #:50047 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To  : TECH@WW

By G8MNY                                  (Updated Nov 20)
(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)

Many years ago I bought a 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 breadboarding lab.
                                                       5V <Ŀ
     _________________________________               0-18 <ĴPSU<Off/onMains
              Raised Top            \B          5V float <
    ________________________________  \A
     \  on    (o)       7seg    DVM  \   \C          Sine <Ŀ
      \off   Freq       8 8    +1.99  \    \K    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 ........ ... .  .  .  .  aB     Inputs >
               :Ŀ s 
               :           eO     Volume >Ŀ
 Volume  O Af :: ::  :                       Amp<5V
               :: ::  :Bread-LST         LS <
Switches !!!!  :: ::  :boards  
               :: ::  :        T       LEDs <Ŀ
               :: ::  :                       Drivers<+5V
Switches  ! !  :: ::  :        O     Inputs >
               :: ::  :        
               :: ::  :        M  Switches < 5V
   Push   o o  : .....  ......        
 Buttons       :ٳ   Flip Output <Ŀ
                         J K<+5V
                    F R O N T                        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, Variable: 0 to +18V DC @ 800mA max, 0 to -18V DC @ 500mA max.

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


AF AMPLIFIER & LS: (added as room inside) 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 give 0 & 5V,
2 centre off logic level switches give -5, 0, +5V,
2 press buttons +5v or 0V pressed,
1 J-K Flip Flop gate,
8 data display LEDS with drivers, +5V for on,
2x 7 segment displays with drivers.

COMPONENT PATCH BREADBOARDS 
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.

USES
Plug in Rs, Cs, transistors, IC etc to make a test circuit up. I keep long lead
components for use in it, & often make up actual circuits with short lead
recovered components etc. Quite useful for AF responce checks & even some
complex analoge & digital IC setup tests.

  
Why don't U send an interesting bul?

73 De John, G8MNY @ GB7CIP


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