Given the relaxation oscillator of Fig. 17.68:a. Find  and  at IE = 0 A.b. Determine VP, t...

Given the relaxation oscillator of Fig. 17.68:

a. Find  and  at I_E = 0 A.

b. Determine V_P, the voltage necessary to turn on the UJT.

c. Determine whether R₁ is within the permissible range of values defined by Eq. (17.8).

d. Determine the frequency of oscillation if  = 200 Ω during the discharge phase.

e. Sketch the waveform of v_C for two full cycles.

f. Sketch the waveform of  for two full cycles.

g. Determine the frequency using Eq. (17.7) and compare to the value determined in part (d). Account for any major differences.

FIG. 17.68

 (17.8)

 (17.7)