Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant (by measuring phase angle only G01R25/00)

Child Classifications

Navigate with arrow keys, Enter to open

• G01R 27/025 CPC only CPC only
• G01R 27/04 in circuits having distributed constants IPC+CPC Available in IPC and CPC
• G01R 27/08 Measuring resistance by measuring both voltage and current IPC+CPC Available in IPC and CPC
• G01R 27/14 Measuring resistance by measuring current or voltage obtained from a reference source (G01R27/16, G01R27/20, G01R27/22 take precedence) IPC+CPC Available in IPC and CPC
• G01R 27/16 Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line IPC+CPC Available in IPC and CPC
• G01R 27/20 Measuring earth resistance; Measuring contact resistance, of earth connections, e.g. plates +1 CPC IPC+CPC Available in IPC and CPC
• G01R 27/22 Measuring resistance of fluids IPC+CPC Available in IPC and CPC
• G01R 27/26 Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants +4 CPC IPC+CPC Available in IPC and CPC