Elenco Space War Gun - Manual (Page 7)

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QUIZ
1. The Space War Gun has two ____________ _____________ oscillators.
2. Capacitor C3 and resistors R3 and R4 controls the _____________ of oscillation.
3. The charge time of capacitor C3 is through resistors ______ and ______.
4. The discharge of capacitor C3 is through resistor ______ and the ______.
5. The 555B timer operates at a __________ frequency than the 555A timer.
6. Increasing the value of capacitor C2 will ___________ the frequency of oscillation.
7. Increasing the voltage of VCO pin 3 of the 555B timer will __________ the frequency of oscillation.
8. VCO stands for ____________ ____________ _____________.
9. In the Space War Gun design, the 555A timer controls the frequency of the _____________ timer.
10. Resistor R6 is added to ___________ the current in the LEDs.
Answ ers: 1. astab le multivibr ator; 2. frequency; 3. R3, R4; 4. R4, IC; 5. higher; 6. low er; 7. decreases; 8. v oltage controlled oscillator ; 9. 555B; 10. limit
Simple and fun to build, compact,
portable, and adds safety to your home
or office. Learn the basics of motion
detector technology while building this
motion detector kit that uses a
pyroelectric infrared sensor. Comes
complete with all parts, PC board,
case, schematic, and extensive training
manual. Requires one (1) 9V battery
(not included).
Uses: • Sentry • Burglar Alarm
• Message Minder • Room Detector
Super Sensor Motion Detector Kit
with Training Course Model AK-510
Requires soldering iron and cutters (not included in kits)
• Easy-to-follow assembly manual • Lessons and self tests included
The AK-700 is a push button
electronic telephone. It is equipped
with the following features:
Pulse/tone dialing, automatic
redial, a ringer turn off switch, 4
neon bulbs for visual indication of
telephone ringing, clear see-
through case to show the total
inner workings of the phone.
Sectionalized construction and
testing makes construction easy.
Wall mounting cradle included.
Telephone Kit
with Training Course Model AK-700