success

fail

		Jul Nov Jan 16 2016 2017 2019
96 captures 24 Jun 1998 - 21 Mar 2020

About this capture

COLLECTED BY

Organization: Archive Team

Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.

History is littered with hundreds of conflicts over the future of a community, group, location or business that were "resolved" when one of the parties stepped ahead and destroyed what was there. With the original point of contention destroyed, the debates would fall to the wayside. Archive Team believes that by duplicated condemned data, the conversation and debate can continue, as well as the richness and insight gained by keeping the materials. Our projects have ranged in size from a single volunteer downloading the data to a small-but-critical site, to over 100 volunteers stepping forward to acquire terabytes of user-created data to save for future generations.

The main site for Archive Team is at archiveteam.org and contains up to the date information on various projects, manifestos, plans and walkthroughs.

This collection contains the output of many Archive Team projects, both ongoing and completed. Thanks to the generous providing of disk space by the Internet Archive, multi-terabyte datasets can be made available, as well as in use by the Wayback Machine, providing a path back to lost websites and work.

Our collection has grown to the point of having sub-collections for the type of data we acquire. If you are seeking to browse the contents of these collections, the Wayback Machine is the best first stop. Otherwise, you are free to dig into the stacks to see what you may find.

The Archive Team Panic Downloads are full pulldowns of currently extant websites, meant to serve as emergency backups for needed sites that are in danger of closing, or which will be missed dearly if suddenly lost due to hard drive crashes or server failures.

Collection: ArchiveBot: The Archive Team Crowdsourced Crawler

ArchiveBot is an IRC bot designed to automate the archival of smaller websites (e.g. up to a few hundred thousand URLs). You give it a URL to start at, and it grabs all content under that URL, records it in a WARC, and then uploads that WARC to ArchiveTeam servers for eventual injection into the Internet Archive (or other archive sites).

To use ArchiveBot, drop by #archivebot on EFNet. To interact with ArchiveBot, you issue commands by typing it into the channel. Note you will need channel operator permissions in order to issue archiving jobs. The dashboard shows the sites being downloaded currently.

There is a dashboard running for the archivebot process at http://www.archivebot.com.

ArchiveBot's source code can be found at https://github.com/ArchiveTeam/ArchiveBot.

TIMESTAMPS

TV Oscilloscope Adaptor

Indicated signal with a radio pench---tvoscph.gif
TV-Oscilloscope Adapter
This is an adapter attached to a TV set. This machine changes a TV to a Oscilloscope. See the photo! This photo indicates a sine wave 50mV 120Hz. See the circuit! Free oscillater makes an 15kHz pulse signal (A). This signal is amplified by an buffer AMP. On the other hand , an amplifier makes 300 times of input signal. And it is shifted to 6V center. A comparater compares a voltage (C) and (B). this comparater makes an pulse width modulated signal on (D) point. Differencial circuit makes a small pulse on the changing timing of the pulse. Buffer receives two signals ,(A) and (E). Therefore it is called as an adder. This machine is able to indicates only 60Hz or 120Hz or 180Hz. Therefore it is not so useful. But I think that this circuit is very good sample to learn about OP amp circuit. If you can not understand my explanation. Read the textbook of the OP AMP! I think this circuit is good to be used to educate on the technical school. For this purpose , I will give you some home works. 1.Use Vcc and Vee! Use two power supply, in order to indicates minus DC voltage! 2.Make the line on the indicator more slim! 3.Make the vertical sweep oscillator! Trigger the sweep by the input signal!

テレビーオシロスコープ化アダプター
家のカラーテレビをオシロスコープにしてしまう、アダプターをつくりました。写真を見てください。１４インチの画面いっぱいにサイン波の波形が広がってい て豪快です。ただし、波形は横に振幅が変動しています。回路を説明します。回路図の左上の部分で、１５ＫＨｚの水平同期信号｛図の（Ａ）点｝を発生しま す。この信号をバファーを通じて、テレビのビデオ信号端子に入力します。すると、いままで、青かった画面が、真っ黒になって、新しく「何も明暗の無い信 号」を受け付けた事がわかります。でも、これだけでは何も面白く有りません。それで次に、外部から信号を入力し、とりあえず反転増幅器で３００倍に振幅を 拡大すると同時に、信号を６Ｖ中心にレベルシフトします。この（Ｃ）点の信号と、水平同期信号発振器の（Ｂ）点のノコギリ電圧とを比較してやります。する と、（Ｃ）点の電圧によって、パルスの幅の変わる矩形波が（Ｄ）点にえられます。これを、ＲとＣで微分して、バッファーにいれてやります。バッファーに は、（Ａ）と（Ｅ）の信号が入ってくるので、２つの信号が合成されます。写真の波形は１２０Ｈｚ、５０ｍＶのサイン波を入力した場合の物です。テレビの 水平同期は６０Ｈｚなので、その倍の１２０Ｈｚの信号だと、縦に２回振動します。この機械では、６０Ｈｚの整数倍の信号しか、観察できません。私の説明で 判らない所は、テレビやオペアンプの教科書をお読みください。観察できる波形が限られてしまうので、この機械はそれほど実用性がありませんが、それより、 これの製作を通して、矩形波発振、波形合成、反転増幅、波形比較器、パルス幅変調、微分、等という、信号処理回路の基本を学ぶ事が出来ます。学校の教材に 良いのでは無いでしょうか。その気になって、宿題をだします。１．電源を両電源にして、ＤＣも観察出来るようにしてみましょう。２．微分回路を定数変更し て、表示される線をもっと細くしてみましょう。３．垂直同期信号（６０Ｈｚ）を発生させ、入力信号から、これに同期をかけて、自由な周波数の信号を観察で きるようにしてみましょう。

tvosc.gif


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