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Astron DC power supplies are made of heavy duty, high quality materials Find Astron Power Supplies RSA and get Free Standard Shipping on orders over. Buy Astron Original RSA Power Supply, Linear, Regulated, 20A Peak, 16A Continuous, Output: Vdc, Input: V: Internal Power Supplies. ASTRON RSA 11 – 15 Volts Adjustable DC Linear Power Supply 16 Amps Cont 20 Amps ICS.

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It was something a little funny in the way they did the circuit Be mindful of that when selecting a power supply for your application. Register for a free QRZ account. Well something I did changed everything There are other failure modes but they are not as likely as these five. Contact the site with comments or questions.

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If these steps tested OK the regulator has probably failed. Used it for years!

The unit is tested and working. I repaired a supply that had blown the fuse following a thunderstorm.

When a fuse blows, my first thought is one of the rectifiers shorted, second thought is the crowbar shorted, third thought is the filter capacitor shorted, and everything else falls in after that. Put in one amp higher and no problems after several years.


See each listing for international shipping options and costs. Note that a failure of one component can cause secondary failures and this makes troubleshooting more astrom. Now the 5A fuse is not blowing, but it is only putting out 7 VDC. If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.

Astron RS-20A Blowing fuses

Using an ohmmeter measure from one lead to another. I was recently Given this RSA. I don’t know how to change the “Fluxcompasator,” or change the oil in the Teslatube I would avoid the “shotgun” approach where multiple components are replaced hoping that the failed one gets replaced in the process.

A 20 amp power supply should power a 50 watt radio with no problem. This Amp works great. Request Quote or Price Match. Case is in good condition with small scratches.

Astron Corporation RSA-BB • Volt @ Amp Power Supply with Battery Backup Option

I will revisit this review in a few months for an update. Might want to get an elmer to help you if this is the first time doing something like this. I have been using it daily for about 7 years now, the only time its turned off is during power outages I get a lot of them where I live. Thanks Steve I have all of those tools, and I have actually done some home electrical work, im just not savvy with transistors and compasitors and such, but I am reading and learning.


Thanks for your time and sharing your knowledge.

This one is junk just like all the rest of the Astrons. Do it for all leads. Using an ohmmeter measure the resistance across each of the four diodes. They will NOT work correctly and your regulation will suffer severely because asttron it.

Astron DC power supplies are made of heavy duty, high quality materials. I hope this is a H Careful investigation revealed one of the diodes in the bridge rectifier was shorted.

Astron Corporation RS-20A-BB

Here are a couple hints when using these supplies. If a short is indicated a transistor is shorted. A question is why did the power supply fail? This can astrn to the fuse blowing if current limiting doesn’t prevent that. Patent and other rights reserved. If nothing sticks out, disconnect the transformers secondary winding from the rectifier and see if it blows a fuse.

Hopefully yours won’t catch fire as did one belonging to astronn fellow ham I knew.