[Test-Equipment] Tek Model 130 LC Meter

[Carl]

Ive found that the 130 is quite accurate if:

1.You thoroughly overhaul it which not only includes paper and electrolytic 
caps but also any in the frequency, timing, and meter determining circuits 
along with any resistors that are out of tolerance. That is just for the 
basic overhaul to factory specs. It can be even better if you want.

2. Read the manual. It gives detailed instructions on the proper line 
voltage for best results, calibration as well as L Correction Tables, and 
error examples.

With mine I completely rebuilt it using 1% or less tolerance components by 
careful selection, all new tubes, and zener regulation in place of the 0A2.

Was it worth it? Well, I did it more as an exercise of curiosity since I 
have SS HP and GR equipment already for my needs. The 130 now holds its own 
with any of them but the cumbersome setup makes for time consuming work and 
it now sits as part of my display of vintage test gear.

Carl
KM1H


----- Original Message ----- 
From: "David DiGiacomo" <david at davmar.org>
To: "Discussion of Electronic Test Equipment" 
<test-equipment at mailman.qth.net>
Sent: Wednesday, September 18, 2013 1:06 AM
Subject: Re: [Test-Equipment] Tek Model 130 LC Meter


> On Tue, Sep 17, 2013 at 3:34 PM, k2cby <k2cby at optonline.net> wrote:
>> Almost All Digital Electronics < http://aade.com/lcmeter.htm> makes a
>> solid-state digital L/C meter that does the same thing and sells for 
>> about
>> $100 in kit form and $130 pre-built. It is extremely accurate for small
>> values of capacitance and inductance. I am a very satisfied customer. The
>> basic circuit was described by Hadorn in QST for September and October 
>> 1982.
>
> All oscillator based LC meters have the drawback that non-ideal
> components can't be measured accurately.  For example, the stray
> capacitance of a coil will throw off the measurement, and the series
> resistance will have a smaller, unpredictable effect.  This is unlike
> a traditional phase-sensitive LCR meter, which can measure just the L.
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