Ebook Starting electronics (3rd edition): Part 2
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Ebook Starting electronics (3rd edition): Part 2
6 Diodes IWe’re going to take a close look at a new type of component this chapter — the diode. Diodes are the simplest component in the range of devi Ebook Starting electronics (3rd edition): Part 2ices known as semiconductors. Actually, we've briefly looked at a form of diode before: the light-emitting diode, or LED, and we've seen another semiconductor too: the 555 integrated circuit. But now we'll start to consider semiconductors in depth.Naturally, you'll need some new components for the c Ebook Starting electronics (3rd edition): Part 2ircuits you’re going to build here. These are:1 X 150Q, 0.5 w resistor1 X 1N4001 diode1 X OA47 diode1 X 3V0 zener diode (type BZY88)https://khothu vieEbook Starting electronics (3rd edition): Part 2
n .comStarting electronicsDiodes get their name from the basic fact that they have two electrodes (di — ode, geddit?). One of these electrodes is know6 Diodes IWe’re going to take a close look at a new type of component this chapter — the diode. Diodes are the simplest component in the range of devi Ebook Starting electronics (3rd edition): Part 2al diode body shapes, again with anode and cathode marked.Photo 6.1 is a photograph of a miniature horizontal preset resistor. We're going to use it in the following circuits as a variable voltage divider. To adjust it you’ll need a small screwdriver or tool to fit in the adjusting slot — turning it Ebook Starting electronics (3rd edition): Part 2 one way and another alters position of the preset's wiper over the resistance track.ANODECATHODEFigure 6.1 The circuit symbol for an ordinary diodeRIEbook Starting electronics (3rd edition): Part 2
NGED END MARKS CATHODEI JRIDGED END MARKS CATHODEAnrn runDiodes IPhoto 6.1 A horizontal preset resistorFigure 6.3 shows the circuit we’re going to bui6 Diodes IWe’re going to take a close look at a new type of component this chapter — the diode. Diodes are the simplest component in the range of devi Ebook Starting electronics (3rd edition): Part 2ant to look at: a diode. Before you build it, note which way round the diode is and also make sure you get the LED polarised correctly, too. In effect, the anodes of each diode (a LED is a diode, too. remember — a light emit-D1 IN400-LED1https://khothu vien .comStarting electronicsting diode) connec Ebook Starting electronics (3rd edition): Part 2t to the more positive side in the circuit. A breadboard layout is shown in Figure 6.4. though by this stage you should perhaps be confidently planninEbook Starting electronics (3rd edition): Part 2
g your own breadboard layouts.Figure 6.4 A breadboard layout for the circuit in Figure 63Which way round?If you’ve connected the circuit up correctly,6 Diodes IWe’re going to take a close look at a new type of component this chapter — the diode. Diodes are the simplest component in the range of devi Ebook Starting electronics (3rd edition): Part 2ttery voltage of 9 V is dropped across the resistor and that no voltage occurs across the two diodes. In fact, there is voltage across the diodes, but we needn't worryDiodes INow, with a resistance of 1 k5, and a voltage of 9 V, we can calculate the current flowing, as:V91 = 77 = 7777= 6mAR1500The n Ebook Starting electronics (3rd edition): Part 2ext thing to do is to turn around the diode, so that its cathode is more positive, as in the circuit of Figure 6.5. The breadboard layout is the sameEbook Starting electronics (3rd edition): Part 2
with anode and cathode reversed, so we needn’t redraw it.6 Diodes IWe’re going to take a close look at a new type of component this chapter — the diode. Diodes are the simplest component in the range of devi6 Diodes IWe’re going to take a close look at a new type of component this chapter — the diode. Diodes are the simplest component in the range of deviGọi ngay
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