Testing Electrical Circuit Boards

Even if you don t have an electrical schematic of the circuit board which would identify components and give you the voltage and resistor values that should be present many circuit boards have test points that are clearly labeled.

Testing electrical circuit boards.

If you re testing for continuity in home electrical wiring turn off the appropriate breaker at your main electrical service panel. Flying probe and universal grid. Then use the non contact voltage tester to make sure the power is off at the circuit you ll be testing. Check the electrical rating of the equipment.

Pcb testing or printed circuit board testing begins with understanding that the pcb is the foundation for any printed circuit assembly pca. Standard probe type circuit testers such as neon circuit testers voltmeters and multimeters have two wire leads with probes for checking circuit wiring or electrical devices when you insert the leads into an outlet or touch them to a switch s screw terminals a light or readout will indicate whether or not the device has voltage. Multimeters can be valuable troubleshooting tools when working with circuit boards. Printed circuit board pcb is the common name that is used for these electrical boards.

Two main types of electrical tests there are two typical types of electrical tests done on a bare printed circuit board. A test of circuit board components such as capacitors resistors transistors and integrated circuits can be done to some extent without removing the components from the circuit board. Qualification acceptance and conformance. Electrical testing on printed circuit boards is a common operation performed during the pcb manufacturing process as one of the last steps prior to completion.

Advanced circuits as a regular part of its pcb manufacturing process performs electrical testing on your printed circuit boards to ensure their quality. Faults on the circuit board can cause the electrical device to malfunction or stop working. In history pcbs were been developed by going through a complicated procedure of point to point wiring and these circuits were highly exposed to get failure or damage. Next test a non contact voltage tester on a circuit you know is working such as any meter you use daily.

More comprehensive testing can be performed on these components when the component is removed. Printed circuit board testing. All electrical tools and devices leave the factory with a label that states the voltage and amperage requirements and more. Testers and how they work.

By examining the board and the surface mounted components you can identify obviously damaged or disconnected parts before beginning a points test. Bare printed circuit board electrical testing capabilities. Step 1 visually inspect the board. You can test the points on a board to identify the location of a fault.