Electronics homework

1) Draw the current waveform of the output resistor RL if VBR = 20 V,

IH = 20 mA, and RL = 1000 ohms. Label the current graph with the

correct value of the output current. Assume components are ideal

and voltage and current are in phase

\ , /

/ /

/ / /

J

s

2) Determine a range of values for Rÿ that will be able to turn on/off

the UJT if: q = 0.3, Ip = 30 pA, Iv = 40 pA, Vv = 5 V

t,;;@

ss

3) What value will R3 need to be in order for the SCR to turn off if IH =

30 mA and VAK = 0.7 V?

/

,fs ' uÿ

l )

1