‘Overwhelming’ evidence against PG&E in deadly fire, says lawyer suing | Power Inductor Coil

Wire wound resistors are made by winding a wire around a plastic, ceramic or fiberglass cylinder. Since the wire can be cut to a precise length, these can have a high precision resistance value with a tolerance of 0.1% or better. To get a high resistance the wire has to be very thin and very long. The wire can be thin for lower power ratings or thicker for higher power ratings. It can be made of a number of alloys including nickel-chromium, copper, silver, iron-chromium and tungsten.

Abstract: A radio access network (RAN) cell site field test tool with a mobile application extension wherein a diagnostic function can be invoked automatically based on preconfigured event criteria or can be initiated remotely by a preregistered human or machine user. Example diagnostic functions may include the ability to test one or all the following functional/structural subsystems of a RAN cell site infrastructure comprising: fronthaul components, backhaul components, baseband components, GPS/location components, transceiver components, antenna components, enclosure/chassis components, internal monitoring components, cooling/AC and other ambient climate control components, environmental/regulatory compliance components, and power components.

–Fuel Efficiency: Fuel Efficiency (MPG, km/l, L-100km) Fuel Efficiency 0-5 Min; 0-30 Min; 0-2 Hours Fuel Flow CO2 Emissions Driving Efficiency Over All (Kiwi Score) Driving Efficiency Smoothness (Kiwi Smoothness) Driving Efficiency Drag (Kiwi Drag) Driving Efficiency Acceleration (Kiwi Accel) Driving Efficiency Deceleration (Kiwi Decel)

When completed in a couple of years, the Ontario grid gains a vital link to customers in 13 U.S. states via PJM Interconnection, one of the largest wholesale energy markets in world.

While broadcast and other transmitter designs began to move away from vacuum tubes during the final decades of the 20th century, the Tesla coil lagged somewhat behind, as making such a jump involved much more than fitting a big transistor in place of the triode tube shown in Fig. 2. And due to the relative fragility of transistors, especially with regard to voltage spikes and other momentary disruptions that would be of little consequence to tubes, most Tesla coilers were content to stick with spark- or vacuum tube-excited machines.

Being a lazy digital hobbyist, my knowledge of resistors are mainly 4k7 = pullup and 330 = LED no go poof

Sorry to necrobump, but Elliot, you forget that in the on state Vds is low, not 3.3V. You can safely look at the peak of the DC line in that graph and the corresponding Vds willl give you voltage drop on the fet at that (high) current.

He notes that “current limiting on the driver board is set at 2,500 Amps, which may seem extreme for 600 Amp-rated transistors, but it’s pulsed.” RF potential on the primary of the coil (constructed from large diameter copper tubing) is estimated to be around 10,000 Volts.

This has to be a common hacker use case. Does anyone have the MOSFET I’m looking for? Or do you all just use motor driver ICs or tack random 9 V batteries into your projects? (Ugh!)

GH Induction is always looking for new technologies that benefit directly to our customers. This is our main added value.

If the motor were being driven by a higher-voltage source, and you were switching the MOSFET on the low side, then you can use the motor’s power supply to drive the MOSFET, switching it on and off with whatever is handy — a small-signal BJT is just about perfect here. That’s the classic solution, illustrated here. As long as the motor voltage is high enough to fully open the MOSFET, you can just use that for the switching voltage.

NERC safeguards put in place in U.S. and Canada to prevent a repeat of 1965 spectacularly failed on Aug. 14, 2003, when an undetected and overloaded transmission line in Ohio sparked a chain reaction of blackouts affecting 50 million in Ontario and eight U.S. states.