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CAT NO: DIDACTICNLE-Export-048006
Internal Resistance And Matching In Voltage Sources For Electrical Lab Training Workshop.
Principle
Both
the terminal voltage of a voltage source and the current depend on the
load, i. e. on the external resistance. The terminal voltage is measured
as a function of the current and from it the internal resistance and
no-load voltage of the voltage source are determined and the power graph
plotted.
Tasks
To
measure the terminal voltage Ut of a number of voltage source as a
function of the current, varying the external resistance Re, and to
calculate the no-load voltage U0 and the internal resistance Ri.
1.1 Slimline battery
1.2 Power supply
1.2.1 Alternating voltage output
1.2.2 Direct voltage output
To measure directly the no-load voltage of the slimline battery (with
no external resistance) and its internal resistance (by power matching,
Ri = Re).
To determine the power diagram from the relationship
between terminal voltage and current, as illustrated by the slimline
battery.
What you can learn about
Voltage source
Electromotive force (e.m.f.)
Terminal voltage
No-load operation
Short circuit
Ohm's law
Kirchhoff's laws
Power matching
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