Chapter 6 The First NAND Gate Circuit & Lesson 18 Building the First NAND Gate Circuit.

Chapter Chapter 6 The First NAND Gate Circuit

Electronic Circuits for the Evil Genius Second Edition 64 Lessons with Projects
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Electronic Circuits for the Evil Genius Second Edition 64 Lessons with Projects

  • The First NAND Gate CircuitSECTION 677THIS IS GOING TO LOOKvery messy andcomplicated at first. As you get used to it, you willsee that it really is very simple. In this chapter, wewill do the following:■We will build and become familiar with a basicdigital circuit.■We will learn how an analog signal istranslated into a digital output, using differentinput devices.■We will be introduced to control timing in aresistor-capacitor circuit.Lesson 18Building the First NAND Gate CircuitEnough talk, already. Back to the fun stuff.Breadboard the circuit shown in Figures L18-1and L18-2 (see the Parts Bin).Even though they don’t look the same, matchthe pin numbers in the drawing with the pinnumbers on the schematic. Refer back to the 4011pin-out diagram of Figure L17-4 to help you withthis.■R1—100 k■R2—10 M■C1—1μF axial or radial■LED—5 mm round■D1—Signal diode (skinny golden)*■IC 1—4011 Quad NAND gate* Don’t use the fat golden diode. You can substitutethe black power diode.P ART S BINFigure L18-1