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surplus-electronics-sales.com

surplus sales of hobby motors, breadboard, torx screwdriver sets, 555 timers, potentiometers, 1n4004 diodes, 5mm ultra bright white leds and capacitors.

electronicsurplus.com

159-157-RA1 Relay, Reed. Mercury Hg-Wetted, Form C. The mercury-wetted contact relay represents one of the more sophisticated types of relays made today. The early pioneer work in mercury-wetted contact switching dates back to the 1950’s, as telephone laboratory scientists sought out the “perfect contact”. Reed relays use an external electromagnet to control the reed switch. The contacts are of magnetic material and the electromagnet acts directly on them without requiring an armature to move them. Sealed in a glass tube, the contacts are protected from corrosion. Mercury-wetted relays are fast in operation and have relatively good load carrying capacity and long life. The mercury films are reestablished at each contact closure and contact erosion is eliminated. The mercury films are stretchable, there is no contact bounce and because it is a mercury contact, the contact resistance is very low and idea for low level switching applications. A mercury-wetted reed relay is a form of reed relay that employs a mercury switch, in which the contacts are wetted with mercury. Mercury reduces the contact resistance and mitigates the associated voltage drop. For high-speed applications, the mercury eliminates contact bounce, and provides virtually instantaneous circuit closure. Mercury wetted relays are position-sensitive and must be mounted according to the manufacturer's specifications. Because of the toxicity and expense of liquid mercury, these relays have increasingly fallen into disuse. The high speed of switching action of the mercury-wetted relay is a notable advantage. The mercury globules on each contact coalesce, and the current rise time through the contacts is generally considered to be a few picoseconds. However, in a practical circuit it may be limited by the inductance of the contacts and wiring. It was quite common, before restrictions on the use of mercury, to use a mercury-wetted relay in the laboratory as a convenient means of generating fast rise time puls

electronicparts-outlet.com

Buy Resistor - 20K Ohm - 16W - wirewound - 61x9mm of type High power from €3.00 from Electronic Parts Outlet

sayal.com

Use Solar Power, Harness The Power Of The Sun With This Environmentally Friendly D.i.y. Kit! Children Can Do A Series Of Do-it-yourself Experiments To Acquir...

surplusgiant.com

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wellgainelectronics.com

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piezo.com

We carry a vast range of piezoelectric products including piezo actuators, piezo sensor, piezo energy harvester, piezo fans, & piezo kits and related services.

anatekinstruments.com

Alps 5" Long Dual Slide Log Potentiometer, 50k Ohm, 5" long, 3/4" wide, 1/2" deep (no pins/slider).

anythingdisplay.com

Anything Display has tens of thousands of discounted pop-up banners, branded flags, tower displays, EZ TUBE displays & banners, LED Displays and much more. Buy now!