While the AADE LCII works well with smaller capacitance and inductance
values, it is wanting at higher values.
A cheap test equipment addition/supplement/replacement to the AADE unit
is the LMS impedance bridge described by Dr. George Steber, WB9LVI. it
was described originally in Oct. 2005 QST, with a full blown treatment
in Sep/Oct 2005 QEX.
The QEX version may be found at:
http://www.marucchi.it/ZRLC_web/ZRLC/Steber_An_LMS_Impedance_Bridge.pdf The QST version may be found at:
http://wb6dhw.com/RLC_Meter/A%20Low%20Cost%20Automastic%20Impedance%20Bridge.pdf The component count is low, requiring a dual OP Amp, LM358, 5 range
resistors which have been measured accurately, a 2 pole 5 throw switch,
some 1.5V batteries and a pair of 1/8" plugs and cables. Oh, and a Win98
or WinXP PC. A Linux/Wine combination should work as well.
Inductance range 13 uH to 130 H, capacitance range 13 pF to 1300 uF.
Once upon a time Dave, WB6DHW, offered a kit or bare board for this
project, but it seems to fallen by the wayside.
As with almost all programs written for Winxx by novice programmers, the
user interface has some quirks. In this case they are easily identified
and overcome.
[Non-text portions of this message have been removed]