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Electronics123 Team (Beatrix, Elvis Cornelius and Jaco)

Electronic Workshop 1

In this workshop we build a Transistor Flip Flop that flashes two LED's. The workshop take 4-5 hours to complete and we present it at our store in Waverley Pretoria. For bookings contact Jaco Smit see contact details on top.

Continue reading to see how we go about making this Transistor Flip Flop.

Electronic Components

In this image you can see all the components needed for making the Transistor Flip Flop. There is: two transistors, four resistors, two capacitors, two LED's, Battery, PCB, Enclosure and a switch. 

Circuit Diagram

This is the electronic circuit diagram of the Transistor Flip Flop. Note we but the positive on top now we can imagine how the electrons flow conventional flow stated that there is a flow from positive to negative but remember later discovery showed that the actual electrons flow from negative to positive.

Test it on breadbord

Next we must test if this electronic circuit diagram actually work. For this we construct the circuit diagram on breadboard using the actual components.

Breadboard is easy to use. The terminals of the components get inserted into the square sockets. These square sockets are connected inside the breadboard. Now you can construct a closed circuit using the inner connections.

Making the PCB step 1

In this workshop you make your own PCB. The first step is to dill the holes we do this by sticking a print out of the component side onto the component side of the PCB now we can drill the holes at exactly the right spots for the components to fit.

Making the PCB step 2

We draw the tracks on to the track side of the PCB. The ink will protect the tracks from the etching process.

Making the PCB Step 3

The unprotected copper get eroded away by the ferric-chloride in this etching process.

Making the PCB Step 4

We wash the ink of the tracks to reveal the copper tracks. 

Populate the PCB

We populate our PCB with all the components. You will need to check for polarity and insert each component correctly. 

Solder your components

We solder the components on to the tracks. For best solder results check that you heat up the terminal as well as the track.