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What is the diode current with the load connected? What is the increase resulting in the output voltage when the load is disconnected?
For a forward-conducting diode, what is the largest signal-voltage magnitude that it can support while the Corresponding signal current is limited to 10% .
Find the voltage-transfer characteristic (VTC) vO versus vI for -12V = vI = 12V for the case I = 1 mA .
Find the value of I that will provide a phase shift of -45°, and find the range of phase shift achieved as I is varied over the range of 0.1 times to 10 times .
With the load connected, to what value can the 5-V supply be lowered while maintaining the loaded output voltage within 0.1 V of its nominal value?
Partial specifications of a collection of zener diodes are provided below. For each, identify the missing parameter and estimate its value.
For the two major choices possible, find the load regulation. In this calculation neglect the effect of the regulator resistance R.
If the raw supply changes by 1.0 V, what is the corresponding change in the regulated output voltage?
Find VZ0 of the zener model. Find the zener voltage at a current of 10 mA and at 50 mA.
What is the regulator output voltage when the supply is 10% high? Is 10%low? What is the output voltage when both the supply is 10% high .
For both designs, the supply voltage is nominally 9 V and varies by ± 1 V. For the first design, assume that the availability of supply current .
Calculate values for the line regulation and for the load regulation for this circuit using the numerical results obtained in this problem.
At what forward voltage does a diode conduct a current equal to 10,000IS?
If a current of 1 Ma is drawn away from the output terminal by a load, what is the change in output voltage?
What is the effect on the forward voltage of the diode if an identical diode is connected in parallel?
Find the currents ID1 and ID2 that flow through the two diodes, and the voltage VD that appears across their parallel combination.
What relative junction areas should these diodes have if their currents must have binary-weighted ratios, with the smallest being 0.1 mA?
What value of V results? To obtain a value for V of 60 mV, what current I2 is needed?
Using the constant-voltage-drop (VD = 0.7 V) diode model, find the voltages and currents indicated.
Analytically, find the voltage corresponding to your estimate of current. By how much does it differ from the graphically estimated value?
What do you expect the voltages VR1 and V2 to become at 0°C and at 40°C?
A designer of an instrument that must operate over a wide supply-voltage range, noting that a diode's junction-voltage drop is relatively independent .
What is the apparent rise in junction temperature? What is the power dissipated in the diode in its final state?
A "1-mA diode" (i.e., one that has vD =0.7 V at iD = 1 mA) is connected in series with a 500O resistor to a 1.0 V supply.