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The Lucas 1/4" diameter glass tube fuse have a different length as compared to the standard US item. The Lucas 1/4" diameter glass tube fuse is 1 + 5 ⁄ 32 in (29 mm) long, while the US standard 1/4" glass tube fuse is 1 + 1 ⁄ 4 in (32 mm)] long. However, many Lucas fuse holders permit the longer US version to be installed easily.
High-voltage fuses of the expulsion type have fiber or glass-reinforced plastic tubes and an open end, and can have the fuse element replaced. Semi-enclosed fuses are fuse wire carriers in which the fusible wire itself can be replaced. The exact fusing current is not as well controlled as an enclosed fuse, and it is extremely important to use ...
First-generation wiring systems became susceptible to abuse by homeowners who would replace blown fuses with fuses rated for higher current. This overfusing of the circuits subjects wiring to higher levels of current and risks heat damage or fire. Knob-and-tube wiring may also be damaged by building renovations. [11]
Cutaway diagram of a No. 10 delay switch. One type, the British Number Ten Delay Switch (official name, "Switch, No. 10, Delay" and often referred to as a "timing pencil"), was made of a brass (or in later versions aluminium) tube, with a copper section at one end which contained a glass vial of cupric chloride (the liquid was widely and erroneously reported to be sulfuric acid [original ...
Green-colored infrared-absorbing glass is frequently used, so an infrared heat source can concentrate the heat in the small sealing zone of the glass tube. The thermal coefficient of expansion of the glass material and metal parts must be similar to prevent breaking the glass-to-metal seal.
The krytron is a cold-cathode gas-filled tube intended for use as a very high-speed switch, somewhat similar to the thyratron. It consists of a sealed glass tube with four electrodes. A small triggering pulse on the grid electrode switches the tube on, allowing a large current to flow between the cathode and anode electrodes.
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110–119 – Y8A 8-pin steel tube base; Rimlock B8A; 130–139 – Octal; 150–159 – German 10-pin with spigot; 10-pin glass with one big pin; Octal; 160–169 – Inline wire-ended Pencil tubes; Y8A 8-pin steel tube base; 170–179 – RFT 8-pin; RFT 11-pin all-glass gnome tube with one offset pin; 180–189 – Noval B9A; 190–199 ...
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