Special and problem blocks:

    Speaker Block:


    The speaker block has a 300:8 ohm audio transformer. Actually a 600 ohm center tap to 8 ohm using the center tap for 300 ohms. 2.5 inch 8 ohm speaker.

    Question: What is the DC resistance of the 300 ohm side of a real Lectron speaker block?


    Earphone Block:

    My problem with the earphone block is in actually obtaining a 300 ohm earphone. To overcome this problem with circuits that use the earphone as a 300 ohm resistor, I have simply created a 300 ohm block.

    Next post: Power block