Testing Electrical Circuit Boards

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.

Testing electrical circuit boards.

Multimeters can be valuable troubleshooting tools when working with circuit boards. Two main types of electrical tests there are two typical types of electrical tests done on a bare printed circuit board. Printed circuit board pcb is the common name that is used for these electrical boards. Flying probe and universal grid.

Next test a non contact voltage tester on a circuit you know is working such as any meter you use daily. 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. You can test the points on a board to identify the location of a fault. Printed circuit board testing.

Pcb testing or printed circuit board testing begins with understanding that the pcb is the foundation for any printed circuit assembly pca. Check the electrical rating of the equipment. The circuit board is a top quality product that should not cause your end product to cost you money due to failures and recalls. More comprehensive testing can be performed on these components when the component is removed.

Qualification acceptance and conformance. By examining the board and the surface mounted components you can identify obviously damaged or disconnected parts before beginning a points test. 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. Step 1 visually inspect the board.

Bare printed circuit board electrical testing capabilities. All electrical tools and devices leave the factory with a label that states the voltage and amperage requirements and more. Cords are provided that prevent accidental connection to circuits that provide the wrong voltage or current. Testers and how they work.

If you re testing for continuity in home electrical wiring turn off the appropriate breaker at your main electrical service panel. Faults on the circuit board can cause the electrical device to malfunction or stop working. Then use the non contact voltage tester to make sure the power is off at the circuit you ll be testing. 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.