QUICK FIND
CURRENCY
Use keywords to find the product you are looking for... ADVANCED SEARCH
YOUR CART IS EMPTY
Categories
Manufacturers
Bestsellers
6S17K-V UHF triode tube (original box) - $2.50/ea In Stock

6N3P / 2C51 / 5670 / 6CC42 tube - $1.00/ea In Stock

6N2P / 12AX7 / ECC83 tube - $2.00/ea In Stock

6N7S / 6N7GT tube - $1.70/ea In Stock

6N9S / 6SL7 / 6SU7 / ECC35 tube - $2.50/ea In Stock

6N1P-EV / 6DJ8 / ECC88 / 6922 Voskhod tube - $3.95/ea In Stock

6S19P-VR tube (original box) - $4.00/ea In Stock

6N8S / 6SN7 / 1578 FOTON tube - $6.00/ea In Stock

6S45P-E / 6C45P-E / WE437 tube - $15.00/ea In Stock

6N3P-EV / 2C51 / 5670 / 6CC42 tube (original box) - $1.50/ea In Stock

6C33C-B / 6S33S-V tube - $35.00/ea In Stock
Site news
24 Aug 2018 - Credit/debit cards updated!
17 Aug 2018 - Summer vacation is over
05 Jul 2018 - Work schedule AUG 2018
03 Jun 2018 - Server migration completed
03 May 2018 - SSL certificate updated
Articles
Receiving and amplifying tubes (catalog)
U.S. tubes and their Soviet analogues
Russian/Soviet tube designations
Types of some Russian capacitors
Code chart for TESLA tubes (1947-1984)
Shipping Info Delivery Stats Payment Info How to Order Privacy Notice Returns Policy Contact Us
» Vacuum tubes by types » Triodes
Triodes
A triode is an electronic amplifying vacuum tube which consists of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Invented in 1906 by Lee De Forest by adding a grid to the Fleming valve, the triode was the first electronic amplification device, and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible amplified radio technology and long-distance telephony. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today their main remaining use is in high power RF amplifiers in radio transmitters and industrial RF heating devices. The word is derived from the Greek triodos, from tri- (three) and hodos (road, way), originally meaning the place where three roads meet.
Single triode Double triode
NEW ARRIVALS!
6F5M / 6F5 tube
$10.00
6N3P-E / 2C51 / 5670 / 6CC42 tube
$1.25
6N6P / ECC99 / E182CC FOTON tube
$15.00
6S28B-V HF triode tube
$3.00
6N16B-VI MELZ double triode miniature tube
$3.00
ECC83 / 12AX7 MULLARD tube (original box)
$90.00
Copyright 2007-2018 Tubes-Store Inc. All rights reserved.