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Member Since: January 11, 2012

Country: United States

  • The real test is Circuit #13. If page 69 of your copy of the guide is anything like mine, it will be an exciting race to see which blows first, the diode or the transistor. Pay careful attention to the polarity of the diode (it’s wrong in the breadboard diagram in my copy of the guide.) The cathode (black band) should be on the “+” side of the relay coil. The connections list on page 70 is also wrong (in a totally different way.) The schematic on page 68 is correct.

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