Transistor Museum Oral History Jack Haenichen Motorola 2N2222 Page 17

A Transistor Museum Interview with Jack Haenichen

The Development of the 2N2222 – The Most Successful and Widely Used Transistor Ever Developed.

USE THE LINKS AND REFERENCES SHOWN BELOW TO EXPLORE THE WORLD OF THE LEGENDARY 2N2222

References to the History and Importance of the 2N2222

1. A current Google search for the 2N2222 yields over 700,000 results. There is no other transistor type that has this level of current and historical importance. You can spend days reviewing the wealth of web information on the 2N2222. This is a compelling indication of the unmatched success of this legendary device.

References:

http://www.google.com and use “2N2222” as the search text.

2. ARRL is the national membership association for Amateur Radio operators. With over 150,000 current members, this organization has a long history of technological excellence. The 2N2222 has found a unique place in the “hearts and minds” of the community of amateur radio operators, and this wonderful device has been used in countless projects over the past thirty years. Here are two examples:

References:

A) The “Tuna Tin Two” is likely the most famous radio construction project for the 2N2222. This is a simple transmitter that uses two 2N2222s and has achieved widespread fame within the ARRL. The links below were suggested by Ed Hare, W1RFI, who is the ARRL Laboratory Manager:

http://www.arrl.org/tis/info/pdf/7605014.pdf

http://www.arrl.org/tis/info/pdf/0003037.pdf

http://www.arrl.org/news/features/1999/0615/1/

B) Another well known radio use of the 2N2222 is shown at the link below. Jim Kortge, K8IQY, has developed an amateur radio transceiver, the 2N2/40, which uses (22) 2N2222s! This project, introduced in 1997, has won numerous awards and has recently been made available as a kit”

http://www.k8iqy.com/qrprigs/2n240/2n240page.html

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