125 results found (page 3 of 9)
https://hambook.org/tech2022/appendx/supplement-whats-new-in-the-2026-question-pool

…ads Key Information: A typical RF dummy load consists of a 50-ohm non-inductive resistor mounted on a heat sink Dummy loads let you test your transmitter without radiating a signal. The 50-ohm rating matches standard amateur radio impedance, and the non-inductive design ensures i…

https://af.wikipedia.org/wiki/Radio

…tor ossilleer word bepaal deur 'n netwerk van induktors (spoele), kapasitors en resistors in ʼn sogenaamde LCA-kring. By AM-senders word die ossillator gestabiliseer met behulp van 'n piësoëlektriese kristal . By FM-senders kan die ossillator nie gestabiliseer word nie aangesien d…

http://iopscience.iop.org/met

…the temperature is inferred from a comparison of the Johnson noise voltage of a resistor at the unknown temperature with a pseudo-random noise synthesized by a quantum-based voltage-noise source (QVNS). The advantages of the method are that it relies entirely on electronic measur…

https://resolver.caltech.edu/CaltechTHESIS:07312014-142921170

… m°K. The temperature of the resonator above 4.2°K was determined by two carbon-resistor thermometers * located at the top and bottom of the outer conductor. The two thermometers generally indicated the temperature within 50 m°K so their average value was used as the temperature …