About EEVblog

Check Also

EEVblog #1335 – Miniware $70 DT71 LCR Tweezer REVIEW

Review of the new $70 Miniware DT71 LCR Tweezers, is it any good? https://s.click.aliexpress.com/e/_dT6koqT Forum: ...


  1. Nice vintage stuff, can smell it through the net.

    At 23:02 we have some silicon diodes IR2E1 (International Rectifier) Type 2E1.
    See service manual page 28, item no. 43.

  2. That would make a fun steampunk case for some small computer. A raspberry-pi or some ITX thingy 🙂

  3. Very pretty indeed. Would love to see it working.

    Edit: maybe 3d print some spacers for the aa batteries and a metal plate at the end for the spring? Maybe a 5c piece would do the job. Serious hack though.

  4. According to Wikipedia, Electrical Equipment of Australia was bought by Amalgamated Wireless (Australasia) in 1981.

  5. I see Ivan already identified the IR2e1 for you. However you also wondered about the CV2400 number. Those numbers are English military numbering. (CV is common valve). See http://www.wylie.org.uk/technology/semics/CVseries/CVseries.htm. Also If you service the thing, be carefull with the transistors, they are glass body and break far to easy.

    • Thanks for non posting twice the same info.

      • Wow, first time I dared comment around the experts, and from the reply I make out I have offended someone. Welcome to the community! FYI I do not see the cv numbers explained in another comment and I only referred to you (Ivan) to state you already explained the IR2e1. So I do not get your reply. I’ll just keep watching Dave’s great videos in silence if that is the attitude.

        • I don’t know what you mean with “the experts” and no, you don’t have offended anyone. Why you ought to? My reply is to thank you because you don’t have explained again what I have already explained, usually this happens to push me to say something…since about 13 or 14 years.(The hobby psychologists in the background).
          Go on watching and enjoy videos and don’t hesitate to comment, sooner or later someone will reply, if only for thank you 🙂
          Merry Christmas

  6. Makes me think about today’s equipment which is designed with a short life in mind… In those days, instrumentation that lasted sixty years was considered cool. However, they probably quickly realised that technology evolves so swiftly that any particular instrument linked to a leading-edge technology is becoming obsolete within three to ten years (in those days) and often even faster today. So there is no point in building anything like they did then, unless the equipment has a precise mission, such as usage-intensive test equipment in industrial environment, etc. Other such equipment is military stuff that must perform under very harsh condition.

    Anyhow, it just made me ponder on the philosophy of design, with respect to ruggedness and life expectancy of the equipment.

  7. BTW, this is the kind of equipment that movie studio are eager to get hold of for their movie sets…

  8. Ridiculous quest there. What occurred after? Good luck!

Leave a Reply

Your email address will not be published. Required fields are marked *