he moderate voltage limiting device used in ECG orcuatry is made of Oa Gas-decharge tube Ob 2 parallel silicon diodes Oc Back to back Zener diode Od None of these

Assuming an ideal diode model for all the diodes in the circuit below, chose the correct state (bias) for each diode. R1 ww 9kQ 1N1199C R2 D1 18kQ 1N1199C V2 12 V R3 1kQ D3 1N1199C R4 D3: On (Forward Bais) D3: Off (Reverse Bais)

Diode circuitsFor each circuit below, use the diode approximation with forward dropVF= 0.7 V to find the output voltage. No current flows to the output.

quick solution please

3. An SCR differs from the Shockley diode because a. it has a gate terminal b. it is not a thyristor c. it does not have four layers d. it cannot be turned on and off 4. A Shockley diode turns on when the anode to cathode voltage a. exceeds 0.7 V b. exceeds the gate voltage c. exceeds the forward-breakover voltage d. exceeds the forward-blocking voltage 5. Once it is conduction, a Shockley diode can be turned off by a. reducing the current below a certain value b. disconnecting the anode voltage c. a and b d. none of these

Determine which diodes are forward-biased and which are reverse-biased in the configurations shown in Figure 4. Assuming a 0.7-V drop across each forward-biased diode, determine the output voltage. O+5 V -10 V R DI +s vOK D, -SVOKH D3 +s vOK D4 -5 voK DI -5VOK Dz OVout OVout +5 voK Figure 4.

6:1 D3 Vin RL D4 50 Hz D2 560 2 Figure 2 (b) The full-wave bridge rectifier in Figure 2 has 170 V ms sinusoidal input at the primary circuit. Di, D2, Ds and D4 are practical Si diodes and each has barrier potential (V3) of 0.7 V. (1) Determine Vplin), Vpígri, Vplcec) and VpRL). (ii) Draw waveforms for Vn, Veri, Vze and Vau for TWO (2) complete input cycles. (ii) Calculate Vavo and peak inverse voltage (PIV). (iv) Calculate the maximum current flowing through each diode. lle

Draw the diode equivalent circuit for the Exclusive OR gate (EX-OR) with two inputs (A) and (B) and one output (C)? Note: C = AB + ĀB

* The 4-layer diode in below figure is biased such that it is in the forward-conduction region. Detemine the anode current for and VBRF) = 20 V, VBE = 0.7 V, VCE(sat) = 0.2 V. Rs 1.0 kn VBIAS 25 V

consider the figure below that shows an approximated reverse recovery turn-off characteristics for a power diode. Show that the following relation can express the total reverse recovery charge, Qrr = 1/2(trr*ts1) di1/dt =1/2(trr*ts21) di2/dt * ip Isl 1s2! -Ir