2d21 tube data sheet

General electric eta 52 2d21 page 2 157 maximum ratings continued absolute maximum, of a bogey tube without external shield. Giant ge hydrogen thyratron, used in pulsed radars, next to miniature 2d21 thyratron used to trigger relays in jukeboxes. For instock products from 3,500 leading manufacturers. A thyratron is a type of gasfilled tube used as a highpower electrical switch and controlled. Only a few types are still used today, mainly in highpower, highfrequency applications.

Buy 2d21 richardson electronics electron tube at farnell. Operating characteristics of the tube include a highcontrol ratio. A thyratron is a type of gasfilled tube used as a highpower electrical switch and controlled rectifier. Full text of heathkit tc 2 tube data see other formats. Franks electron tube pages american substitutes for. Full text of heathkit tc 2 tube data internet archive. The ef80 internally screened pentode was a workhorse of the vhf tv receiver and was introduced in mid 1950 to replace the ef91. At 0 volt the tube is at max conduction and is the top line on the display. Tube 2d21 or rohre 2d21 id4224, thyratron, miniatur7pinbase b7g, usa 1940 and shown. The lines show how the tube conducts throughout that range. This tube type is replaceable by a raytheon type, as indicated, in abnormal temperature applications where air temperature inside cabinet is above 1400f. Numbers shown in light yellow background are used in seriesstring configurations. Numbers shown in light blue background are coldcathode tubes.

It can be upgraded to use the 2d21, or even 6012 tubes. Franks electron tube pages foreign substitutes for. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. Competitive prices from the leading electron tubes distributor. The ef80 was much used for rf, intermediate frequency, and video amplification. Operating characteristics of the tube include a highcontrol ratio essentially independent of temperature over a wide range, low gridanode capacitance and very low grid current.

Simply order before 8pm and we will aim to ship instock items the same day so that it is delivered to you the next working day. Pdf 2d12zpage 1953l thyratron tube 2d21 thyratron 2d21 2d21 tube 2d21 thyratron tube operation. Construction refers to both basing size and the envelope hf means heater or filament voltage and current specifications. Franks electron tube pages foreign substitutes for american types this data is scanned and may contain errors caused by the ocr software. I change this directory structure often and your links will not work correctly. Valve vacuum tube data sheets and application notes. Thyratrons are a class of electron tube that are gas filled, and specifically made to switch either on or off. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes, or discharge tubes. Types with the same numerical designation as a raytheon type but with a different manufacturers. Many industrial, military or otherwise professional tubes were also produced. Buy 2d21 richardson electronics electron tube at element14. If you need more than the quantity available, please email us at. Thyratrons can handle much greater currents than similar hard.

Below is the typical sweep circuit from an rca 884 datasheet. The 2d21 is a miniature, 4electrode, inertgasfilled thyratron with negative control characteristics for use in relay and gridcontrolled rectifier applications. It is easy at that point to take where that top line intersects the plate voltage, find the milliamp level and compare it to the datasheet. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Franks electron tube pages american substitutes for foreign types this data is scanned and may contain errors caused by the ocr software. Thyratron online from elcodis, view and download 2d21 pdf datasheet, electron tubes specifications.