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Inductor, capacitor, frequency meter.
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http://www.measur.narod.ru

Copyright (c) Potenko Alexander, 2000-2002
E-mail:  measur@narod.ru;
Technical features.
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Range of measurement inductor............. 0.05 uH - 2 H
Range of measurement capacitor............ 0.5 pF - 20 mF
Range of measurement frequency............ 5 Hz - 10 ìHz  
Amplitude ................................ 0.15 v - 25 v
Inaccuracy of measurement, (not more)..... 5 %   
Choice of limit of measurement L ......... automatic, manual
Choice of limit of measurement C ......... automatic, manual
Choice of limit of measurement F ......... manual
Connected To free COM port of the computer.


Adjustment.
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 Adjustment begin in frequency measurement mode (SB1 out-of-work):
having included first range of measurement give voltage +10Â on resistor R18,
beforehand having disconnected its from R17 and conclusion 6 microcircuits D10, 
and changing a capacity Ñ6 obtain 4400-4500Hz.
 Then, having restored join R18, meter translate in capacity measurement 
mode (1 range). Connect capacitor a capacity 30-70pF and replaceable resistor 
R17 variable (divisor =40 lines 16 Lcfmeter.ini), obtain evidences  (+-2pF).
Install constant R17 resistor and changing a period of measurements 
(line 20 Lcfmeter.ini) obtain evidences of meter corresponding nominal value 
of master capacity.
 Include an inductance and changing a divisor (line 6 Lcfmeter.ini) obtain 
evidences of meter corresponding nominal value of inductance.
 Adjustment fmeter. Installing maximum sensitivity by changing a resistor R5.  
 Prescribing generator is used For the extension of range of measurement with 
the changeable frequency (SB2), in the program a switching 1-5 ranges on 6-10 
is realized by keys Ctrl-z, Ctrl-x. Evidences corresponding master capacities 
and inductances in ranges 6-10 obtain a changing the corresponding divisors 
(line 8, 18).