Technical data

14
Us
Amm
rojec
• ulti-meter.
• simp ms.
• le DC
ems Needed:
k  resistor
t e current
me
1. er from the circuit g meters.
ries.
4. e mode n for what you are measuring (dc current mode).
6. erly, turn power on and take reading.
ing Meters
eters
P t Objectives:
o learn how to safely and effectively measure DC current using a digital mT
Gain practice in creating le circuits from schematic and pictorial diagra
earn to adjust a variab source for a desired output current. L
It
- Electronics Trainer - Digital multi-meter - 1
- Jumper Wires - 1.5V dry cell battery
In his project please use the following safety precautions when connecting meters to mak
asurements.
emove pow prior to making changes and connectinR
2. Break the circuit in an appropriate place and connect the meter in se
3. Observe polarity when measuring dc current.
Use the corr ct meter / functio
5. Be sure to set the range high enough for what you are measuring. If unsure, start at the
highest range and work down until an accurate reading is given.
After meter is connected prop
Experiment 1
Ammeter
What mode or function should the meter be set to?
s a
ad short will occur and the
ircuit look like the diagrams above? Check: (Yes ____, No ____)
4. Connect the 1.5V cell to the circuit and read the
Current measured is: ______________ mA
1. Set up the DMM to measure current from 0 to 2mA.
(a) A
DC
(b) V
AC
(c) V
DC
(d)  (e) A
AC
2. Connect the circuit shown above. (The resistor color bands will be: brown, black, red, gold)
3. Break the circuit at point A and insert the meter. Make sure the meter is in series and there i
resistance in the circuit. If there is no resistance in the circuit a de
meter could get damaged or destroyed.
Does your c
ammeter.
0.00
A
m
A
COM
V
Ω
mA
1k Ω
B eratt y
+
−
Point A
Schematic Dia
g
ram
1k Ω
Dia
1.5v Dr
y
Cell
g
ramPictorial