MSI Logic IC building blocks at work
The
TCT Lab Module is a cable tester that has been designed to function as a tool
for teaching and demonstrating combinational logic circuits. It is built using some common but
fundamental MSI logic ICs. The circuit includes oscillators, counters,
flip-flops, buffer drivers, XOR gates, OR gates, LEDs and a buzzer. Analysis of
the design and operation of the circuit should give the students a very good,
solid hands-on experience in using and designing with these basic logic building
blocks.
TCT
circuit can detect opens, shorts, crossed wires, and crossed pairs. A counter
driver applies all 8-bit combinations to the cable and compares the input with
the output. The counting is stopped if a problem is detected, and the wire in
question is indicated on a separate set of LED indicators. A buzzer also
provides audible alert when a fault is detected.
Three connector sockets for the RJ45 cables accommodate both straight
thru and crossed patch cables.
TCT Lab Module (with base plate, rubber feet, and binding posts) . . TCT-LM-010 $75.50 USD
TCT PCB Kit (parts and the circuit board) . . . . . . . . . . . . . . . . . . . . . TCT-PK-010 $53.50 USD
Educational Products 
