Elenco
TM
Electronics, Inc.
150 W. Carpenter Avenue
Wheeling, IL 60090
(847) 541-3800
http://www.elenco.com
e-mail: [email protected]
QUIZ
1. There are ________________ oscillators in the Electronic Cricket.
2. The frequency of these oscillators are ________ cycles per two minutes and ________ cycles per second.
3. The on-time for transistors Q1 and Q2 of the low frequency oscillator is ____________ seconds.
4. The off-time for transistors Q1 and Q2 of the low frequency oscillator is ____________ minutes.
5. The on-time for the high frequency oscillator is ____________ seconds.
6. Capacitor C1 and resistor R2 are part of the positive _____________ for the oscillator.
7. Oscillators Q3 and Q4 are much higher on frequency because resistor R5 and capacitor C2 are _________
in value.
8. The charging path for capacitor C2 is transistor Q4, resistor R5 and transistor ________.
9. If you wish to decrease the time between sound burst, you must decrease resistor ________.
10. The output of transistor Q4 is fed to the __________.
Answer
s:
1.tw
o;2.
one, 10,000;
3.fiv
e;4.
two;
5.fiv
e;6.
feedbac
k;7.
smaller;
8.Q3;
9.R1;
10.speak
er
