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 Post subject: EICO 1032 Power Supply Schematic
PostPosted: Aug Mon 07, 2017 1:13 pm 
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Location: Manchester, NH
If anyone has a schematic for this I would appreciate a copy --- Please and thank you

Griz


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Mon 07, 2017 4:35 pm 
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Joined: May Tue 30, 2006 4:46 pm
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Location: Santa Rosa, CA
The 1030 is probably very close:

https://www.nostalgickitscentral.com/ei ... c_1030.pdf

Rich


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Mon 07, 2017 4:56 pm 
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Thanks Rich -- found that one on line -- appears to be quite different -- 1032 looks to have solid state bridge rectifier structure -- could be the one I have was modified as the xfmer is disconnected for some reason -- just starting to research it -- I might have to draw my own schematic to see what was done in it before me -- not sure if original owner was trying to modify it or troubleshoot it or what -- mainly want to find out what it is supposed to be -- rather surprised there is not a schematic on line somewhere -- must not have been a very popular supply :?

Griz


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Thu 10, 2017 2:35 pm 
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The 1032 is a solid state power supply so the 1030 schematic does not apply -- What I really need to know is what the power transformer is as the one in the unit I have is smoked. Trying to figure out what to replace it with -- any insight would help - thanks

Griz


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Thu 10, 2017 3:33 pm 
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Joined: Feb Tue 07, 2012 9:32 pm
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Location: Middlesex,NJ
HI GRIZZ:

GIVE THIS SITE A TRY.

http://www.manuals.group/results.php?search=EICO%201032

GOOD LUCK

WALTER-W2WIQ


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Thu 10, 2017 4:29 pm 
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Thanks Walter but they want $20 -- not that desperate yet :|


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Mon 14, 2017 9:16 pm 
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Location: Manchester, NH
I have concluded the xfmer is smoked so I need to know its specs -- EICO pn 30100 - Anyone know ?

Thanks


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Tue 15, 2017 5:00 am 
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Joined: Jan Sun 18, 2015 5:01 am
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Location: Waxahachie Texas
I have a complete manual. Give me a day or so and I'll scan it.

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Crist


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Aug Tue 15, 2017 5:02 am 
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Oops! I have a 1030 manual, sorry.

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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Sep Wed 20, 2017 2:55 pm 
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Bump -- still unable to find anything on the xfmer - any insight would be helpful


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Nov Fri 03, 2017 1:47 pm 
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Well -- finally found a copy of the manual thanks to real nice guy on e-bay -- so in the manual the voltage on the positive terminal of C2 is stated to be +42 v - based on that I am not sure what I need for a transformer as I am not able to locate the Eico part listed above -- What does the AC output voltage of the xfmer need to be to provide the 42 volts -- 42-0-42 or does it need to be higher ? Thanks in advance for your inputs --


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Nov Fri 03, 2017 3:38 pm 
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grizzly1 wrote:
Well -- finally found a copy of the manual thanks to real nice guy on e-bay -- so in the manual the voltage on the positive terminal of C2 is stated to be +42 v - based on that I am not sure what I need for a transformer as I am not able to locate the Eico part listed above -- What does the AC output voltage of the xfmer need to be to provide the 42 volts -- 42-0-42 or does it need to be higher ? Thanks in advance for your inputs --

It had better not exceed 50 volts peak, as the filter capacitors are only rated for 50 volts. So the maximum RMS output voltage would be 50/sqrt(2), or about 50 * 0.707 = 35.35 volts. You need some margin, say 15% to cover line voltage and load variation, so I'd use nothing larger than a 30-0-30 VAC transformer. Peak voltage on C2 for such a transformer would be 30 * sqrt(2) or 30 * 1.414 = 42.42 volts. Assuming the voltage specified in the manual is the no-load voltage, that checks.

So: a 60 volt center tapped transformer (30-0-30 VAC).

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Steve Byan http://www.byan-roper.org/steve/steve-at-play/


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Nov Fri 03, 2017 5:22 pm 
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Thanks Steve -- been a long time since I did any transformer calculations -- I was pretty sure the sqrt 2 came into that somewhere but forgotten a lot of things I once knew -- appreciate the explanation

Griz


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Nov Fri 24, 2017 8:13 pm 
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I just stumbled on to one of these supplies with no transformer. If you find a suitable replacement, please pass along the info Griz. Thanks! Bob, WA3R


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 Post subject: Re: EICO 1032 Power Supply Schematic
PostPosted: Nov Mon 27, 2017 1:57 pm 
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Location: Manchester, NH
Hi Bob -- I followed Steve's advice above and found one that worked on Playthings of the Past website -- worked out well but was too large for the cover to fit properly -- so a CT 30-0-30 is the right thing. I found that all the transistors were cooked as well -- got some NTE equivalents and supply is now working but I find the meters are in-accurate -- There are some changes to the part list in the manual so if you do not have that PM me and I can e-mail you a copy --

Griz


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