• This topic has 1 reply, 2 voices, and was last updated 2 years ago by Michael.
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    • #8154
      Guenther
      Spectator

      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>One of the first actions of Braun AG after integrating the Egger Lectron business was to order ( at Deutsche Lectron GmbH München) a new block with a parallel resistor 120 Ω and an electrolytic capacitor 100 µF to save in standard AF amplifier stages up to 4 separate blocks. In the very first advertisements of end of 1967 / spring of 1968 following offer was published in many magazines:</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”></span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>As a sample, here again (also shown in: Optimizing the L/C circuits) the well known experiment 50 with the standard layout:</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”></span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>And here with the “compressed” block (this is my extra version with the integrated GND connection – with the #8056 an additional GND block is required) and the #8078 (with emitter on GND):</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”></span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>But this was not the only “combined” block: in 1973 (?) Inelco Italy needed two special blocks for his Sistema 2000 (based on Buchlabor)  and the extention 2005:</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”></span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>We will meet this two blocks in my Shortwave Receivers again…</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>Even Mr. Kopperschmidt used to combine several passive components, just to save blocks and keep the needed ground plate requirement as low as possible.</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>Best,</span></p>
      <p style=”text-align: justify;”><span style=”font-family: ‘Marcellus SC’; font-size: 24px;”>G.</span></p>
      <p style=”text-align: justify;”></p>

      • This topic was modified 2 years ago by Michael. Reason: Changed font and size styling for easier reading
      • This topic was modified 1 year, 12 months ago by Guenther.
    • #8164
      Michael
      Keymaster

      Hi Günther,

      Very informative as always.

      Where did you get the first graphic in your post?  I have never seen this!

      Thanks,
      Michael

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