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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KV6OMay 17, No returns will be accepted on electronics due to part swapping.
Well something I did changed everything Product Narrative Astrin linear power supplies are heavy duty and solid state electronically regulated.
I have a VS35M power supply and have had no problems with it for over 30 years! Dad was an active and avid HAM radio operator for 73 years! Used it for years!
Astron Corporation RS-20A-BB
I have not turned up the FTD to full W, but otherwise it is a solid power supply. We used 2 Halogen Fog Lamps at 9.
Using an ohmmeter measure the resistance across each of the r20a diodes. A 25w rig is about the top of it’s limit. Used, in great cosmetical condition. Most watt radios need a 22 amp or so supply.
Register for a free QRZ account. Unless one is skilled and careful it’s easy to do it wrong and cause another point of failure. If a short is indicated a transistor is shorted. This can lead to the fuse blowing if current limiting doesn’t prevent that.
What is “SCR in the crowbar”? My Subscriptions Subscriptions Help. Finally, the Astron is the easiest power supply I have ever had to repair. If nothing sticks out, disconnect the transformers secondary winding from the rectifier and see if it blows a fuse. Well, your going to need some basic tools screwdriver, multimeter, soldering iron, etc. ra20a
Astron RSA Product Reviews
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. Cliff – When a fuse blows 5 amps in this casethen a short or component failure is causing excessive electrical current. Rock solid when used within the specifications. The sleeve is sized so a mobile radio slides in and snugly fits into it.
Using an ohmmeter measure the resistance across the power supply output terminals. This circuit prevents damage to your radio equipment, due to over voltage.
Yes this will be very educational and that is the main reason why I want to fix it myself with the help of you fine people, and I am poor! Astron Corporation manufactures full line of reliable DC power supplies addressing the needs of consumer and professional users. How to read Astron Corporation power supply model numbers: It’s job is to turn on and short out the supply if the voltage gets to high typically due to a pass transistor shortkinda like throwing a “crowbar” across the supply.
You can keep your Pyramids and such. Note that a failure of one component can cause secondary failures and this makes troubleshooting more challenging. Firing the crowbar can damage the power supply, but the idea is that the power supply has already failed so why worry about further damage? Using an ohmmeter measure the resistance from the 2N case to one pin or the other.
I replace the component with one with a higher rating and all has been fine since. This Amp works great. I have been using it daily for about 7 years now, the only time its turned off is during power outages I rs20w a lot of them where I live.
Index of /SCSSTreasuresCatalog/hardware/temp-Astron-RS20A
Guaranteed to work as described. The top three failure modes in order of probability are: Check my feedback as I don’t sell junk. He was a radio, TV and other electronics serviceman for much of his life, and he loved radio!
I highly recommend the RSA. New to Ham Radio?
This page was last updated: For me Astron is one of the best there is period!