Page 22 - Template EBook Kita (A4 Document)

TOPIC 1: INTRODUCTION TO 555 TIMER

3. ' This pin is an inverting input to a comparator 2 that is responsible for
transition of flip-flop from set to reset.' This statement refer to pin ________

A. output
B. threshold

C. trigger
D. reset

4. State the function of voltage divider in internal circuit of 555 timer.

A. as a memory element that can store and output a logic “0” or logic “1”

B. as a supply voltage .
C. as reference voltages to the comparators.
D. as a output of the timer .

5. Choose a TRUE application of a timer.

A. Switch mode power supply
B. Linear ramp generator
C. Harmonic control

D. Inverter

ANSWER:
1. A

2. B

3. C
4. C

5. B

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