The Great Schematic Quiz
Can you identify these schematic symbols?
Some have been around forever while others
were penned just for the digital age. The
symbols are typical examples of each
component but several are tricky, so put on
your thinking cap. Good luck!
12
4
■ Presented by David Goodsell
Scoring: 0-9 = Novice 10-19 = Good 20-27 = Expert The correct answers can be found on page 65.
a. Photodiode
b. Opto-Isolator
c. Opto-Mixer a. Flip Flop
b. Buffer
c. Half Adder
a. Filter Bridge
b. Diode Bridge
c. London Bridge
5
a. OR Gate
b. Excl NAND
c. Excl NOR
6
a. Op-Amp
b. Logic Gate
c. Flip Flop
7
a. Tetrode
b. Thyratron
c. Pentode
8
a. Open Collector
b. Schmitt Trigger
c. Tri-State Gate
9
a. PNP Pair
b. Darlington
c. Zener Pair
3
a. Pwr Transformer
b. Audio Transformer
c. I.F. Transformer
10
a. Ge Diode
b. Si Diode
c. GaAs Diode
11
a. Logical OR
b. Logical NAND
c. Logical NOR
12
a. SCR
b. Diac
c. Triac
13
a. Rheostat
b. Thermostat
c. Potentiometer
14
a. Chassis Ground
b. Earth Ground
c. Digital Ground
15
a. Piezo Buzzer
b. Speaker
c. 5. 8 GHz Horn
16
a. Super Cap
b. Pushbutton
c. Crystal
17
a. Gas Rectifier
b. Gas Regulator
c. Phototube
18
a. SP3T Switch
b. 3PST Switch
c. 3PDT Switch
19
a. Pin 9 = Upper L
b. Pin 1 = Upper R
c. Pin 6 = Lower L
20
a. LED
b. 1N914A
c. LCD
21
a. P-Chan MOSFET
b. N-Chan MOSFET
c. N-Chan JFET
23
a. Variable Pot
b. Variable Cap
c. Tapped Cap
24
a. +5V Regulator
b. -9V Regulator
c. -5V Regulator
25
a. Arrester
b. Rain Gauge
c. Antenna
26
a. MOV
b. Fuse
c. QVC
27
a. SPST Relay
b. SPDT Relay
c. DPDT Relay
22
a. 12AX4 Tube
b. 6L6GB Tube
c. 12AX7 Tube
58 June 2017
