” TIP CAS. I ca IN ICAO. PвKE. | 39A. LM CR3 |. 3 A4. | IN 1 tci +. CI01 +. R8. 3 K. 10v. SCRI I. Astron Observations. Longevity. Family of RS supplies – all the same design Astron RSM Astron is inconsistent – some do, and some don’t. Don’t rely on . Here is an annotated schematic of the Astron RSM detailing the workings of the various parts of the Astron circuit. The annotations were originally written in.
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Unfortunately this is important because if one chooses to buy replacement manyal from Astron they according to Astron need astrin supply the model and component IDs. Astron Linear Supply Battery Backup Modifications All the schematics xstron modifications necessary to add a battery backup to your Astron linear power supply. How to contact Icom America Technical Support: If you have grounds on your radio equipment at axtron places like the antenna, tower, coax you are creating two earthing ground return paths of different capacity and with ever so slight differences in potential.
For example, the RSA can deliver up to 35 amps at The RSA is rated at 35A peakand uses two bridge rectifiers, each rated at 35A, placed in parallel to share the load.
The draftsman obviously started with the RS-7 schematic; he forgot to adjust the voltage table. This Astron uses a large heatsink with no fan. A conversion list of Motorola to Astron model numbers can be found here. Also checked negative side of DC output: Implement one or both. The available output current on VS supplies depends on the output voltage.
I found that site and referenced it above also. It also has a very detailed parts list at the end. Anyone have a copy or know where I could obtain it? Usually this would be much more pronounced on instrumentation loops industrial control with pressure transmitters operating off of a mA current loop for example. The data placard on the underside, with last few digits of the serial number obscured.
A no-frills 28V power supply similar to the RS supply but with twice the output voltage and half the output current. The basic idea of a linear power supply is to rectify AC into DC to charge a big capacitor at around twenty-five volts or so, with a fair bit of ripple at Hz.
If you find one somewhere else that we don’t have, we’d appreciate a scan. When you get a transient lightning, fault, normal device switching it can behave in difficult to predict ways.
The RSA has a continuous duty rating of 25 Amps according to the catalog, or 27 amps according to the data plate on the bottom of my unit. Replacing or Adding Digital Meters to Astron Read his full story here.
N5PA Website – RSA Power Supply
The last I checked Astron website had schematics of all their linear power supplies. Click here or the logo above to go to Astron’s web site www. There are also Battery “BB” versions of the power supply. Again, not exactly beautiful, but functional.
If you downloaded this schematic in the past you may want to get a fresh copy and replace your incorrect copy.
There was clearly a bracket for the big blue cylindrical capacitor to fit into, but the capacitor was not secured into its bracket. Trying to balance out our three phase loads we noticed that there was an unaccounted for power loss.
It ended up being in one ground conductor that was not bonded correctly,it was a MCM cable that had 6 volts at amps running through it. An “RS-” prefix is a standard desk-top Regulated Supply. Donations of additional schematics for the library below are always welcome!!
Johnson, Kenwood, Motorola, Uniden and Vertex. A trailing “BB” indicates the Battery Backup option. Looking inside you will see two sets of heatsinks near the rear of the unit.
It also allows a radio to operate easily off of 12V lead-acid batteries, or automotive electrical systems. If you bridge the thermostat with a two watt resistor of 75 to ohms the fan will be on continuously, but very slowly.
Capacitor out of its mounting bracket.
A look at the Astron RS-35A
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 IDs and values. The only way to find out is to try it I guess. Powered by SMF 1.
Contact the site with comments or questions. All of these factors combine to make repeater owners value reliability and ruggedness. Check the catalog pages on Astron’s web site for all the details. The astrln noise can be annoying at times, so I’ve modified my supplies to make it less so. A trailing “L” indicates there’s a asfron Lighter socket on the front. See the comments above on the battery backup feature.
The Pyramid Gold Series linear power supplies are very similar in design and capacity to the Astron supplies.
The board is not beautiful, but it appears to be solidly functional.