Eico Sine and Square Audio Wave Generator | eBay!. Audio Generator Equipment EICO Electronic Instrument Brooklyn, build , 11 pictures, 2 schematics, 5 tubes, United States of America. Used Eico Vacuum tubes for sale on + second hand hifi sites & shops. Use Hifi Shark to monitor pricing and global availability.

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Sep Mon 12, 4: Before powering it up I did a visual inspection of the circuitry and checked for any obvious shorts etc. I checked the sine wave output distortion using my HP Distortion Analyzer.

It was stable and surprisingly flat across the frequency ranges. I pretty much guessed on the tube locations. Log in or Sign up. They all test good though. If there were a requirement to generate an accurate frequency I would connect a frequency counter to it. Dec 28, eifo. Quick and simple project finished.


Dec 29, 7. The 6FG7 replaces the 6SN7. The schematic you posted is of the oldest variant which used a 4 gang variable capacitor. Sign in for more lists.

Sep Tue 06, Getting to them isn’t simple. Hopefully I will get it figured out. For additional information, see the Global Shipping Program terms and conditions – opens in a new window or tab.

I hoped that since the original version was the same tube, that switching the two wouldn’t be catastrophic I readily admit that may not have a been a fair rico and I may have just got lucky I also brought it up slowly on my current limiter and Variac, while looking at the signal with a scope, and watching the tubes.

The dial adjustment is broke on the inside and is visible in the picture. I get a signal on the scope, but not a clean one.

Eico 377 to 5c1 Champ conversion

Sep Tue 06, 4: Start of add to list layer. Previous topic Next topic. Share This Page Tweet. If it was an intentional change, the socket wiring will not match the eicoo.


EICO Model and Documentation

I didn’t even think about the original tubes being octals. Users browsing this forum: This generator has become my preferred 37 for use over my HP oscillator. Thanks for the info and the ideas. I have one exactly like it. Sell one like this. You must log in or sign up to reply here.

Audio Generator 377

Dec 28, 1. Exact same tube compliment. This Buy It Now listing has ended. Eico or IS it? I removed it from the amp I built in one of these.

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