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While discrete resistors in the range of few tens of megohm are very common, making giga-ohm range resistors is more complicated. Discrete resistors are available up to several tera-ohms, but are expensive because of limited demand. Sometimes, a combination of active and passive electronic devices is used to achieve such a high resistance. [1]
100 cm and 1 mm 2 cross section at 0 °C British Association (B.A.) "ohm" 1863 1.000 Standard coils deposited at Kew Observatory in 1863 [16] Digney, Breguet, Swiss 9.266–10.420 Iron wire 1 km long and 4 mm 2 cross section Matthiessen 13.59 1 mi (1.609 km) of 1 ⁄ 16-inch-diameter (1.588 mm) pure annealed copper wire at 15.5 °C Varley 25.61
Thin film resistors are usually far more expensive than thick film resistors. For example, SMD thin film resistors, with 0.5% tolerances and with 25 ppm/K temperature coefficients, when bought in full size reel quantities, are about twice the cost of 1%, 250 ppm/K thick film resistors.
For example, a 10 ohm resistor connected in parallel with a 5 ohm resistor and a 15 ohm resistor produces 1 / 1/10 + 1/5 + 1/15 ohms of resistance, or 30 / 11 = 2.727 ohms. A resistor network that is a combination of parallel and series connections can be broken up into smaller parts that are either one or the other.
CN¥1.58 billion (2023) ... By the end of the 1990s, it had become the world's largest manufacturer of ceramic substrates and resistors. [2] In 1992, ...
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