EICO 950B PDF

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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Remember rules for series capacitors. I am a Electronic Tech. Agree with the others that you should not mess with the bridge caps unless they are actually bad, as this can lead to calibration nightmares.

This unit was working when I received it. 950

So far, I’ve replaced all of the non critical paper and electrolytic capacitors. My main reason for getting this was to be able to check leakage at high voltages; which, is something most modern equipment can’t do.

Just out of curiosity, I’d like to know when Eico finally discontinued this model.

Yes, the knob is wrong. I had a hard time getting those film caps but managed to get them finally. This instrument always finds a way to give you a healthy shock sooner or later. I believe it is a Eio bridge. Jun Tue 18, You NEED precision reference capacitors to achieve an accurate capacitor tester.

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I replaced 3 capacitors 2 didn’t look good and one was wrong value.

EICO 950B – Repair/Restoration

By now, it had turned an ugly yellowish brown color. Books Support This Site: The power supply has essentially no ground, it uses the one resistor from the positive terminal to ground to divide the potential so that the correct voltage appears across the eye tube and the rest of the voltage appears across the capacitor being tested through the rest of the circuitry for DC. It is fun to work with since it 50 years old.

I have recapped and redone some wiring and retubed the unit. Mine tops out at VDC. 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. If the shadow does not open very far, or it appears blurry or out of focus, then you need to start changing the bridge caps out.

EICO B – Repair/Restoration – Lazy Electrons

They should only be used by knowledgeable technicians. That means for balance, a variable resistor is placed in series with the 2 uFd arm used with the extended scale to measure big capacitors. As expected, I found broken cables, joints, exposed cabling.

So it all looks good. I use my B for entertainment after a re-cap project. Jun Mon 17, 3: Fill in your details below or click an icon to log in: The bridge is balanced when the maximum dark area is indicated, and you can then read the value of your component on the faceplate scale.

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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 added a line fuse and replaced the line cord with a polarized one.

So I started fixing it. I contacted the seller and he was a TV repairman from Massachusetts. Skip to main content. Electrical voltages are present and represent a danger.

Steve Dow 590b rac. The manual that I printed for my unit has a copyright date on it. Heathkit C-3 light color scheme. For those caps, I’ll use the closest tolerance parts I can get as long as the price is reasonable.

We do not provide free personalized troubleshooting. Its mentioned in the blog, If you run down the voltage quick after leak testing, the entire capacitor will discharge 950n the POT and burn it. I was blown away by how well kept it was, and went there to pick it up and was amazed to see the amount of electronic instruments he had — collections all the way from