Tech Docs
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An interlock or permissive adds a condition to an electrical control circuit. Instead of allowing a device to run whenever START is pressed, the circuit checks whether another required condition is satisfied first. This lesson builds directly on OSETC.017. The simple technician idea is: a permissive says “this must be true before you may start,”…
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Fujitsu MONAKA uses 2nm silicon for 144 Arm cores while moving the entire last-level cache onto separate 5nm SRAM dies in a tightly coupled 3D chiplet design.
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A ladder diagram is a simple way to draw and understand an electrical control circuit. It gets its name because the drawing resembles a ladder: two vertical rails with horizontal lines, called rungs, between them. This lesson builds directly on OSETC.015 and OSETC.016. You already learned about relay and contactor coils, normally open and normally…
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Marvell publicly demonstrated its monolithic 3 nm Teralynx T100 Ethernet switch at AI Infra Summit 2026, combining 102.4 Tbps, 512-port radix and adaptive routing.
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IBM’s next-generation mainframe CPU natively executes Arm and z/Architecture on the same physical core, bringing modern Arm software closer to mission-critical data.
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A motor starter is a control assembly used to start and stop an electric motor while providing important motor protection. A common magnetic starter combines a contactor with an overload relay. The contactor switches power to the motor; the overload relay helps protect the motor from damaging sustained overcurrent. This lesson builds directly on OSETC.015.…
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Boston Dynamics has given Atlas a new set of hands, and the most interesting part may be what the engineers deliberately left off: a fifth finger. In its October 1 demonstration, Boston Dynamics says the new Atlas hand has 13 degrees of freedom, direct actuation and a design built for high-fidelity simulation and sim-to-real reinforcement…
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ASML and TSMC are pushing a 6×12-inch photomask format to restore full-field High-NA EUV exposure and reduce stitching constraints for large advanced chips.
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SiFive and AMD demonstrated ROCm 10.0 on a 32-core P870-D RISC-V BigSky server controlling Radeon AI PRO R9700 GPU inference.
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Relays and contactors are electrically controlled switches. A small control signal energizes a coil, and the resulting magnetic field changes the position of one or more contacts. This lets a control circuit switch another electrical circuit without requiring a person to operate the contacts by hand. For a technician, the essential idea is simple: coil…
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Arm CSS for Mobile 2 combines a C2 CPU cluster with two SME2 units and Mali G2-Ultra NX neural graphics, distributing AI acceleration across the mobile SoC.
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Single-phase and three-phase describe two common ways alternating-current (AC) electrical power is delivered. A technician does not need advanced power-system math to recognize the basic difference: single-phase power uses one repeating AC waveform, while three-phase power uses three AC waveforms separated by 120 electrical degrees. This lesson follows OSETC.012 on grounding and bonding and OSETC.013…
