EICO capacitance meter

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ic-racer
Posts: 1318
Joined: Tue Dec 18, 2007 2:24 pm

EICO capacitance meter

Post by ic-racer »

There is a EICO capacitance meter on my local Craig's list described as follows.

The Model 950-b is a highly flexible ac-powered bridge which measures capacitance and resistance on direct reading scales, employing an electron-ray (Magic-Eye) tube as a visual null indicator. Measurement of resistance, capcitance, and inductance by comparison with an external complementary standard is also possible, in which case a special ratio scale is read. A dual (hi-low) sensitivity leakage test employs a built in source of polarizing, continously variable voltage and the Magic-Eye tube for a leakage indicator. Hi sensitivity is used for testing paper, mica, and ceramic capacitors, while the low sensitivity tests for electrolytic capacitors. In addition, this instrument provides direct power factor measurement on the high capacity ranges in which electrolytics are measured.

Specifications for the 950B:

Test Circuit
The model 950-B by the nature and accuracy of its testing and measurement facilities, will be found extremely valuable in the servicing of TV, fm/am radio, and other electronic equipment.

Capacitance in 4 ranges
10 mmf - 5000 mm
0.001 mf - 0.5 mf
0.1 mf - 50 mf
50 mf - 5000 mf

Resistance, 4 Ranges
0.5 Ohms to 500 Ohms
50 Ohms to 50 K Ohms
5 K Ohms to 5 M Ohms
5 M Ohms to 500 M Ohms

Comparator: 1 Range
Ratio from 0.05 to 20 (400 to 1)

DC Polarizing Voltage: (for leakage test)
0-500 volts continously variable.

Power Factor: 1 range
0 - 80%.

Tube Complement
1 - 1629, 1 - 6X5.

Power Supply
Transformer-operated, half-wave rectifier.

Power Requirements
105-125 VAC 50/60 cycles.

Dimensions
8" high x 10" wide x 4 3/4" deep.
Wondered if that is at all useful?? Anyone have one? Worth picking up for a few bucks?
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Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: EICO capacitance meter

Post by Structo »

I remember using that exact unit in the 70's in shop class.
:D
My DVM measures capacitane and seems to be pretty accurate too.
Tom

Don't let that smoke out!
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selloutrr
Posts: 3694
Joined: Sun Oct 14, 2007 2:44 am
Location: Southern California

Re: EICO capacitance meter

Post by selloutrr »

I'm sure at it's age you'll need to calibrate and clean / replace caps and service so plan on adding a $100.
if you are planning on already spending a few hundred bucks you can get a brand new Capwizard for testing caps with the circuit saver mod.
I picked one up it's been very useful.
If you want to test voltages and your getting close to the $350-400 price point. Buy a used sencore LC-100 series and you'll never have to upgrade. Sencore is the Fluke of cap testers.
My Daughter Build Stone Henge
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ic-racer
Posts: 1318
Joined: Tue Dec 18, 2007 2:24 pm

Re: EICO capacitance meter

Post by ic-racer »

Thanks for the replies.
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