Path: /eico/b/. This is the BAMA archive. These manuals are available for download and free of charge. I am now accepting new manuals for inclusion in this. DESCRIPTION. Your new EICO Model Resistance-Capacitance-. Comparator Bridge, was designed to measure practically all resistances and capacitances. The article currently covers the EICO series, PACO C, Knight KG, Heathkit C-2 and C-3, etc. (More models will be added on an ongoing basis as I.

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I’ve found some capacitors with tighter tolerance figures; but, they are all non-stocked items that could take a few months to obtain.

For those caps, I’ll use the closest tolerance parts I can get as long as the price is reasonable. You may also like.

Antique Radio Forums • View topic – Eico B resistance/capacitance/comparator bridge

If it ain’t a Hay bridge, someone will say so Schering? And Finally, I am all set: Page 1 of 1.

More items related to this product. By continuing to use this website, you agree to their use. Jun Sun 16, 4: Jun Mon 17, 3: This article discusses repair and calibration information for a number of vintage capacitor testers that all use the same fundamental test circuit. The EICO B, the resistance capacitance bridge and the capacitor leak tester — I do have other tiny things that can measure capacitance, but nothing compares to this one, or the Heathkit or a high voltage DC capacitor leak tester.

It seems to be one of the most popular units out there. Even if you are familiar with solid state electronics, do not try this unless you really understand the risks involved with working on Vacuum Tubes and High Voltage DC and know the safety procedures to follow. So far, I’ve replaced all of the non critical paper and electrolytic capacitors. Somewhere buried in the abyss, I think I still have one of these testers in rough shape that still has the correct pointer on it.


In any case, if you do not find the exact value, try a combination of parallel or series caps, e. Especially the V 0. Steve Dow ve7aso rac.

EICO 950B – Repair/Restoration

I bought one several years ago from and old radio shop. The power factor tester too is also quite handy. Repairs should only be attempted by a qualified technician. Even though the pointer that’s on it works, I’d like to replace it with the correct one.

Depending on where the controls are ieco, a healthy shock awaits if you touch either one and the case at the same time. I wish I had come across this valuable article before. Perhaps it was made up to time the came out.

No buttons to hold The think I love the most about this capacitor tester is that you don’t have to hold push buttons in to do a leakage test on electrolytic capacitors.

What it means, what to look for, etc. All of these models are almost identical in functionality and circuitry. A super bright eye tube means that the DC voltages are out of balance.

Here’s an example of a cap that is 0. When the bridge is far from balanced, the target area of the magic eye tube glows completely closed green, and in fact overlaps. The think I love the most about this capacitor tester is that you don’t have to hold push buttons in to do a leakage test on electrolytic capacitors.


These models use a balanced bridge that measures capacitance from 10mmf up to mf and resistance from 0. PF was added to these testers years ago before high efficiency electrolytics came around And by the same token, nowadays anything with a measurable power factor goes straight into the trash. Jun Tue 18, If you purposely develop the habit of always starting off with the voltage at zero, and always returning it to zero after taking a reading, you will never have to worry about someone filming your eclectic dance moves accompanied with interesting exclamations and posting it on YouTube for everyone to view.

Vintage EICO Resistance Capacitance Comparator Bridge Model B | eBay

Jun Tue 18, 4: Recently I have begun what might be the start of a nostalgic journey in vacuum tubes. It euco when I got it; but, I decided that it needed to be overhauled to insure that it continued to work well.

It’s quite accurate for resistance and capacitance measurement given the limitations, certainly good enough for radio repair.

After verifying the schematics, the first test was the tube test, with just the heater power. I had a hard time getting those film caps but managed to get them finally.