Some Basics
What is Ohm's Law?
V=IR
Name the 3 circuit applications we discussed today.
Control Devices (automate), digital circuits (discrete), analog circuits (continuous)
How do you write 15 in binary?
1111
Why do we use schematics?
It is usually a simplified down version of the actual circuit, making it easier to understand.
What does the last color in resistor tell us?
The tolerance
15 volts goes across a resistor. The measure current is 20 amps. What is the resistance of the resistor?
0.75 ohms
Can a modern light switch be an analog circuit? Why?
Yes, you can control how bright the light is.
Translate this binary number to decimal: 101010
42
What circuit element is represented by a circle enclosing an arrow?
A current source
Resistor colors: red, orange, yellow, pink, blue. Which of these did we not show you?
pink
If voltage is constant, how do we increase a current across a resistor?
Decrease the Resistance.
Which gate only outputs 1 when all its inputs are 1?
The AND gate
What is 29 + 38 + 11 in binary?
1001110
Which end is the positive end of a resistor?
The colors of a 3500 ohm resistor are blank, blank, blank, and gold. Name the other 3 colors (in order).
orange, green, red
What are the 2 measurement devices (stated in the presentation) that can measure the current across something (ex: a resistor)?
An ammeter and a multimeter
Why is digital logic binary input, binary output?
Because Digital logic just needs a yes(on) and no(off). Binary is just that.
What is 16 x 8 X 2 in binary?
100000000
What is the overall shape of a circuit have to be?
A loop
What is soldering?
A way of connecting electronic materials using a metal filler material (solder)
What does an oscilloscope do?
It measures and displays electric signals (ex: voltage, current, etc.)
A NOT gate's output is connected to the 1st input terminal of the OR gate. An AND gate's output is connected to the 2nd input terminal of the OR gate. The NOT gate's input is 1. The AND gate's inputs are both 1's. What is the output of the OR gate.
1
What is 110101 - 001010 in decimal?
53 - 10 = 43
You have 10 volts going through a photoresistor. What weather condition allows the most current through the photoresistor.
A sunny day (with no clouds).
What is a big no-no in electronics safety?
Having liquids near electrical equipment
Ripping the cord
Directly touching exposed wires
In soldering, touching the tip of the soldering iron or making someone else touch it
Not telling you have been hurt/injured
Not using common sense