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Extra info for Certification of Geometric Dimensioning and Tolerancing Professionals: Asme Y14.5.2 - 2000 (Asme Standard)

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The breakdown voltage is the negative voltage the diode can hold against until it permits a heavy flow of current. The diode is not damaged by reverse current as long as the V I heating is not too high. The maximum breakdown voltage may be 5 to 10 V for some diodes and up to 2500 V for others. Chapter 2. DC Circuits and Power Supplies 22 Anode Cathode oo------~~~------~o A C ~ Current 1st digit 2nd digit 3rd digit '------ 4th digit (a) (b) Fig. 2-14. Diode identification: (a) symbol, and (b) color code.

I ~ R2 V;o-----~~----~---4 ~ I Fig. 3-4. An inverting amplifier. 32 3-5 Chapter 3. Operational Amplifiers Choice of Resistances Equation (3-2) suggests that any combination of resistances Rl and R2 providing the same ratio of resistances would be equally acceptable. If Rl = 10000 and R2 = 2500, for example, an input of -2 V for Vi would result in Vo = 8 V. 25 MO. The latter choice of resistances may be preferable, however, because current conducts back from Vo to Vi, which in some cases may distort the source voltage Vi.

Logarithmic converter in Prob. 3-7. ----+' 10 kD Rs 10 kD Fig. 3-23. Op amp circuit with a temperature sensor as one resistance in Prob. 3-9. 3-9. The op amp circuit in Fig. 3-23 converts a varying resistance of a temperature sensor into a corresponding voltage. The resistance of the sensor Rs is 100 n when its temperature is O°C and 125 n when the temperature is 50°C. What is Vo when t = 0 and when t = 50°C? Chapter 4 Transistors 4-1 Impact of the Transistor The invention of the transistor generated a revolution during the past several decades, not only in the technical world, but in social and personal lives as well.

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