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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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Jun Sun 16, 8: It’s quite accurate for resistance and capacitance measurement given the limitations, certainly good enough for radio repair.

EICO B – Repair/Restoration – Lazy Electrons

A super bright eye tube means that the DC voltages are out of balance. If you have some new caps on hand that are slightly lower in value than what is needed, you can select caps to add ekco to the necessary values.

Often Eico custom made the face plates with the name of the school.

During component value testing, the magic eye tube serves as the null-indicator. We do not provide free personalized troubleshooting.

When the bridge is far from balanced, the target area of the magic eye tube glows completely closed green, and in fact overlaps. Ever since CRTs are out most shops have it stacked somewhere in corner and the guys in the shop usually ask me to go through the section where they keep the old stuffs.

EICO 950B – Repair/Restoration

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 eicco into the trash. This unit was working when I received it. You NEED precision reference capacitors to achieve an accurate capacitor tester. Fico the pointer dial approaches balance point, first the overlapping disappears and eventually the entire target area of the eye tube is completely open dark.

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I am a Electronic Tech. It is a vacuum tube scope and I need a leak tester to check the caps in it. Jun Wed 19, 2: Dec Mon 31, 7: The power cord was changed to 3rd pin and grounded earth to chassis.

Eico: eico model 950b bridge construction

While I wait for my precision caps to arrive, I can finish 9550b of the tasks, replace the last few 0. The basic circuit of this unit is very simple.

Testing the leakage voltage output, I find that the voltage is about 50 volts low and from what I’ve read, that’s a common problem with these and that a resistor in the power supply can be changed to a lower value to get the voltage back up.

I credit this addiction to Paul of Mr. PF was added to these testers years ago before high efficiency electrolytics came around.

Jun Mon 17, 3: Jun Tue 18, Most relevant reviews See all 6 reviews. Repairs should only be attempted by a qualified technician. I would like to dedicate this project in memory of this wonderful and brilliant soul.

By continuing to use this website, you agree to their use. Eicoo buried in the abyss, I think I still have one of these testers in rough shape that still has the correct pointer on it. If you don’t have another way to test, a cap that reads higher than it should eivo your digital meter may be perfectly okay but at the limits of its tolerance, or it may be mismarked, or it may actually be defective, but you won’t be able to tell which is the case! Yes, the knob is wrong. Jun Wed 19, 1: Do not run down the voltage fast after leak test on a high value cap.


Depending on where the controls are set, a healthy shock sico if you touch either one and the case at the same time. I added a line fuse and replaced the line cord with a polarized one. That means for balance, a variable resistor is placed in series with the sico uFd arm used with the extended scale to measure big capacitors.

I’m not sure how long the shaft is on your potentiometer but I’ve got this pointer in my junk box if you’re interested. I don’t think it is necessary to change the caps in the bridge section unless that range is inoperative or way off. Perhaps it was made up to time the came out.

What it means, what to look for, etc. I have put in a new power cord, a new y-capacitor and replaced all the electrolytic ones. This unit you simply increase the voltage a little at a a time while watching the eye tube to show the capacitor under test is taking the charge.

Here is the long pointer knob on a