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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The price was right though If nothing sticks out, disconnect the transformers xstron winding from the rectifier and see if it blows a fuse. Well, your going to need some basic tools screwdriver, multimeter, soldering iron, etc. Check my feedback as I don’t sell junk. I highly recommend the RSA. Astron power supply part number example: Buy with confidence, check my feedback. I bought one from the well known web auction site, seller represented it as perfect working condition. Most watt radios need a 22 amp or so supply.

In doing so, he fried the crowbar circuit which was trying to protect his radio when the pass transistors shorted. I have owned this model of supply since I was first licensed in Three conductor power cor Here is a troubleshooting procedure: The top three failure modes in order of probability are: W0JMPMay 17, qstron Wikipedia is your free Internet encyclopedia.

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I replace the component with one with a rs20x rating and all has been fine since. In spite of the model number, this is about a 17 amp supply. If so, bad transformer.

Index of /SCSSTreasuresCatalog/hardware/temp-Astron-RS20A

This can lead to the fuse blowing if current limiting doesn’t prevent that. We used 2 Halogen Fog Lamps at 9. Case is in good condition with small scratches. The circuit is simply not designed to drive these transistors.

Request Quote or Price Match Shipping: I have not turned up the FTD to full W, but otherwise it is a astton power supply.

Index of /SCSSTreasuresCatalog/hardware/temp-Astron-RS20A

This options adds battery revert with a trickle charging circuit. It is not stout enough to run a w radio. This can damage the SCR or a series-pass transistor, thereby damaging the KH6AQMay 17, I couldn’t resist running watts and the power supply quit. I got this power supply dirt cheap and it has fufilled my expectations only as a linear power supply will do.

Astron RSA Blowing fuses | QRZ Forums

Contact the site with comments or questions. Number of bids and bid amounts may be slightly out of date. New to Ham Radio? I have some understanding of electronics, but not enough to figure this out. I have always had terrific service from Astron and this power supply is no different.

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This page was last updated: This one is junk just like all the rest of the Astrons. Hopefully yours won’t catch fire as did one belonging to a fellow ham I knew. Astdon circuit prevents damage to your radio equipment, due to over voltage. After replacing it, and the LM regulator IC for good measure no problems whatsoever.

How to read Astron Corporation power supply model numbers: Several models come equipped with a metal sleeve hoodfor a two-way radio to be mounted inside. The sleeve is sized so a mobile radio slides in and snugly fits into it.

They will NOT work correctly and your regulation will suffer severely because of it. Technical Parameters and Specifications. See this web page for useful information on aetron your Astron and removing some of the problems built into them at the factory. But fixing it would be educational. Be mindful of that when selecting a power supply for your application. Finally, the Astron is the easiest power supply I have ever had to repair. Note that a failure of one component astton cause secondary failures and this makes troubleshooting more challenging.