I just got a Eico regulated power supply but without the schematic or any doc. The C- and the VAC all work fine, but the high voltage. Was cleaning in the basement a bit this afternoon, and stumbled across the schematic for this old Eico power supply on my work bench that’s. This is a classic filament, bias, and regulated high voltage power supply, great for testing and experimentation with tube equipment such as.

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One of the cheapest circuit insurance you can buy is to place diodes in series. Every person enters the auction site at his or her own risk with notice of the condition of the premises and the activities that will be or have been conducted on the premises.


Likewise, series diodes sum their voltage ratings, so the circuit is more robust anyway. First, I fused the center-tap of the HV winding with a ma fuse mama fuse should be reasonable in this circuit.

The Gear Page is run by musicians for musicians. Recently my longtime trusted Eico regulated high eicoo DC power supply succumbed to a catastrophic failure β€” a shorted transformer winding.

NEW EICO Regulated Power Supply INSTRUCTION MANUAL – $ | PicClick

Jul 3, 4. For the price of 130 quality ultrafast diode from a reputable supplier β€” dico cents each for a Fairchild UF 1A, v β€” this protection is a bargain. Many diodes will pass a DMM diode test but are, in fact, shorted when operated at the high voltages seen in the circuit.


I added a protection diode in series with the current meter to prevent current from reversing thru the current meter. Without limiting the generality of the foregoing, Buyer shall restore and repair all real and personal property that is eicoo or damaged as a result of Buyer’s removal of the Goods.

Yes, my password is: Jul 1, 1. The following factors may prevent the notifications from being sent on time or at all: Your name or email address: Phase Linear …on the bench!

Eico 1030 HV Regulated Power Supply

They checked right on the money. Ask the auctioneer a question The Buyer’s Premium is a percentage that is added to the final purchase price of any item.

About half of the resistors were out of tolerance so I changed them all. Webcast bidders will be charged a After that I 100 it back on using the variac.

Jul 2, 3. Getting notified via SMS Text Message will require you to verify your cell phone via the profile page in your account. I fused the screen winding with a 62ma slo-blo fuse, which was the smallest that I had available.

Wonder who ieco making them in Japan, though? Share This Page Tweet. We appreciate your help in keeping this site going. The tubes in such equipment are usually high quality, and are usually operated well within their ratings so they stand a good chance of having life left in them.


This transformer failure caused me to consider how unprotected most transformers are in vintage gear. I then followed the cal procedure and all worked out well. I clipped in some 82uf caps I had and brought it up on the variac.

Likewise, I used two UF in series in the screen supply, which was the winding that failed in my old power supply. Just used tubes, then.

Didn’t even realize I had some NOS spares hidden away all this time. Find all posts by Crist Rigott. MKBJul 3, Visit your account to find out Cleaned all the pots and the meter slide switch. I use my HV power supplies on a daily basis for a number of tasks such as component testing high voltage 1300capacitor reforming, insulation testing, mocking up tube circuits, and many other purposes.

Unfortunately, this old diode shorted and took the transformer winding with it, thereby ruining the transformer.