Stage 1 of 7
LEARN
TC-03 built a resistor, a capacitor, an inductor, a fuse, a switch, a diode, and a transistor model. This bench adds the parts that lab left out, then asks you to point at them on the official figures.
Technician Remediation · Labs · TR-02
Parts, Symbols & Practical Circuits
Parts and their jobs, the official schematic figures, a power-supply path, and solder-joint diagnosis.
NOT STARTED
Lab workspace
Work through the six stages. This remediation lab fills a gap left by Foundations and Core. Finishing it does not finish the Technician syllabus, and it is not Technician exam readiness.
Stage 2 of 7
SEE IT
The pictures are the NCVEC figures for this pool, stored from the official download. A schematic uses standard symbols for the electrical jobs. It does not draw the photograph of the part.
Stage 3 of 7
DO IT
Order a small supply, then diagnose solder joints from the picture. A rectifier changes AC into pulses of one direction. A regulator holds the voltage down to a steadier value. Shielded wire keeps unwanted signals out of the inner conductor. A meter that shows digits is a numeric display. An LED is a common visual indicator. An integrated circuit packs many parts into one package. A resonant circuit pairs an inductor with a capacitor. Rosin-core solder belongs on radio work. Acid-core solder does not. An ohmmeter on a large discharged capacitor starts near a short and then the reading rises as the capacitor charges from the meter.
Stage 4 of 7
EXPLAIN IT
Why can you recognize a part on a schematic you have never built, if you know the symbol's job?
Stage 5 of 7
EXAM CONNECTION
Radio Lab practice. The figures stay on the official images. These questions use what you did with them.
Stage 6 of 7
FIELD TASK
A small station supply is dark at the radio. The schematic order is battery, fuse, switch, regulator, radio. Use the checks before you replace a box.
Stage 7 of 7
ONE MORE CHECK
The meter connections you already practiced have one misuse that damages the instrument. This bench is a simulation.