The Meaning of The Letters on The PCB Or PWB
Rx is a resistor. There are many resistors in the circuit diagram, arranged in sequence, R1, R2. . . Cx is a non-polar capacitor, the anti-interference capacitor at the power input end. IC integrated circuit module. Ux is IC (Integrated Circuit Component). Tx is the test point (for factory testing). Spk1 is Speaker (buzzer, horn). […]