Question 4. In the circuit below I is a DC current, and v. is a sinusoidal signal. Given the diode has vo-0.75V at ip=1.5mA, calculate both the AC and DC voltage across the diode (v.) when I=1mA, R=500, and V₁=100cos(10**t). Assume the capacitors are very large. R₂ www -0 11 15

Vi (t) = 10.sinwt Does not pass positive alternans when Volt input voltage is applied, only Design and explain two different circuits that pass negative alternans. Draw the input and output voltages. What are the types of these circuits? (Note: You can use the ideal diode approach)

After solving a circuit with ideal diodes (Vf=0), what check is necessary for diodes initially assumed to be on? Off? We must check to see that reverse voltage appears across all diodes assumed to be on, and we must check to see that forward current flows in diodes assumed to be off We must check to see that forward current flows in diodes assumed to be on, and we must check to see that reverse voltage appears across all diodes assumed to be off

Capacitance per unit area at no reverse bias is two pF/cm². For a step graded diode of area 5cm², what is net capacitance at 99 V reverse bias voltage?

Capacitance per unit area at no reverse bias is two pF/cm2. For a step graded diode of area 5cm2, what is net capacitance at 99 V reverse bias voltage?

The circuit below has a variable voltage vin as its input. We are interested in Vout as a function of Vin. In other words, if we vary the value of the voltage source vin, what will be the effect on the voltage Vout? The steps below will help you to investigate this question, and your answers will form the basis for a new design. Assume that the diode can be sufficiently modelled as simple diode with forward voltage of 0.7 V (you do not need Shockley's equation). Vin 100Ω M Vf = 0.7 V 2 V V out