Back to Home   Schematics and service information on Astron™ power supplies
Compiled by Mike Morris WA6ILQ
Maintained by Robert Meister WA1MIK
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Contact information:
    Astron Corporation
    9 Autry
    Irvine, CA 92618 USA
    Voice: 949-458-7277   8a-5p Pacific Time
    Fax: 949-458-0826
  Click here to visit 
the Astron Corporation web site
Click here or on the logo above to go to Astron's web site
www.astroncorp.com
   

Note: there is an Astron Wireless Technologies company that manufactures some very nice antennas. It is a totally separate operation with no connections to the Astron Corporation that makes power supplies.


The contents of this page, like almost every page here at www.repeater-builder.com, are totally dependent on donations of information.
If you have a hint or a useful trick please consider writing it up and sending it in.

Please consider sending us a scan if you have an Astron schematic that we don't list below.
If you don't have access to a scanner we can scan a good clean copy.

We have received emailed requests for schematics on the model BB-30M, SS-10 and SS-25 / SS-25M supplies. Does anyone have any to share?

Astron makes both linear and switching power supplies, and some other products.
You should read this Astron Introductory Information article before any of the other articles here in the Astron section
It has some very useful information on the Astron linear and switching power supplies, with background, history, model-specific information, both repair and modification suggestions, photos, and more.

Astron Linear Power Supply Reset Circuits

Astron Linear Power Supply Articles and Modifications

Schematic Diagrams of Astron Linear Power Supplies

Please realize that you will find multiple different schematics listed below for the same supply as the designs changed over the years due to parts availability, circuit improvements, etc. For example, the early supplies use discrete stud-mounted diodes instead of half of a bridge rectifier (switching to a epoxy bridge module, despite the fact that only half is used, is one of the tricks that the designer at Astron used to lower the parts cost and manufacturing labor cost). You may have to download more than one schematic to get the one that matches your supply, and you may not find your schematic at all (as we only have the ones that were donated to us). If you have one that we don't, please consider sending us a scan or a Xerox copy.

We have received emailed requests for schematics on the model BB-30M, SS-10 and SS-25 / SS-25M supplies. Does anyone have one to share?

When (or if) you find the schematic that matches your unit I suggest you print it and stuff a copy inside a plastic page protector, and tape it to the underside of the lid of the power supply cabinet! Several folks have mentioned in emails and on mailing lists that you can call Astron on the phone and you will hear them tell you that they don't have electronic copies of their drawings and they don't know how to email them. Trust me, the person that answers the phone will be amazed when you tell them that the drawings from different years for the same model power supply show some different component ID's and values. Unfortunately this is important because if one chooses to buy replacement parts (from Astron) they (according to Astron) need only to supply the model and component IDs... Fortunately everything but the filter caps, transformer, and sheet metal are common Mouser or DigiKey parts. And I bet you could find the capacitors if you tried hard enough. Astron has to get them from somebody.

Notes:

So leave off the prefixes and suffixes and first look for the basic model number as opposed to the specific model.

Astron builds supplies for several manufacturers - for example a Kenwood KPS-12 is based on the Astron RS-12, the Motorola RRDN6933A is an RM-35A-BB and the Motorola HPN9041 (45 KB PDF) is an RS-20 variant. Astron also builds custom supplies for Motorola, GE, Icom, E.F. Johnson, Kenwood, Uniden and Vertex. For example, the Astron SL11RRA is a 13.8V 11 Amp unit specifically designed with a metal sleeve built into the on top of the cabinet. The sleeve is sized so that a MaxTrac, Radius or GM300 mobile can slide into it (click here for a photo).
A conversion list of Motorola to Astron model numbers can be found here.

Donations of additional schematics for the library below are always welcome !!
Send them to the maintainer listed at the top of this page (you will be credited unless you tell us not to).

See the "Notes" section above for an explanation of the prefix and suffix letters

If you don't find the schematic for your Astron below, then we were not given it. If you find one somewhere else that we don't have, we'd appreciate a scan.

Important Note: Numbers in many of the schematics below, particularly the pin numbers on the 723 regulator IC, may be blurry. There is nothing connected to pin 8, so if you see something that looks like an "8" it's most likely a "6" where the top got closed up. The voltage charts on most of the schematics follows this scheme. Check some other schematics if you can't read the one for your particular supply as they're very similar.

Schematic Diagrams of Astron Switching Power Supplies

Schematic Diagrams of some other popular Astron Linear Power Supplies


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This page originally created in August 2000 by Kevin Custer W3KKC
Totally rewritten and a number of schematics added on 10-14-2004 by Mike Morris WA6ILQ
Copyright © 2000 and and date of last update by Repeater-Builder.com

The following people contributed information to this web page (in alphabetical order by last name):
Greg Allison KZ6S (SK), Tom Allinson WB6DGN, Jim Bacher WB8VSU, Don Best N6ALD, Tim Bovard, Robert Burton KD4YDC, Henry Clark KC4KZT, W.C. Cloninger, Jr. K3OF, Steve Duncan, WA4ITA, Rick Eastwood W6RE (ex KB6LJO), Gary Eldridge KC8UD, George Franklin WØAV, George Henry KA3HSW, Larry Horlick VYHL, Jeff Kincaid W6JK, Ed Lambert K1ZOK, David Leeper K6DWL, Eric Lemmon WB6FLY, Doug Marston WB6JCD, Skipp May WV6F, Bob Meister WA1MIK, David Metz WAØAUQ, Brian Palmersheim KBØETC, Mike Perryman K5JMP, Richard Reese WA8DBW, Ron Rogers WW8RR, Robert Schulz KC6UDS, Bob Shields KA9TYL, JaMi Smith KK6CU (SK), Ron Vincent KF4D, and all those who chose not to be identified.

The Astron logo/image is a registered trademark and is used within this page with permission from the Astron Corporation.

The schematic images are copyright © Astron Corp. Each one is dated on the individual drawing. No copyright infringement is intended. If Astron had the schematic library on their web site we wouldn't need to.

This web page, the hand-coded HTML on it, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.