Astron power supply reset circuit Repeater Builder In most Astron power supply's the point of overvoltage is near 15 vdc. When an Astron power supply has gone into protect, it must be reset by turning off the mains power to the supply for at least 10 seconds. This gives enough time for the filter capacitors to bleed down so complete reset is possible. astron reset circuit Repeater Builder An Automatic (External) Reset Circuit for Astron Power Supplies. The Astron power supply has an excellent overvoltage protection circuit that will clamp the output of the supply to near 0 volts when the power supply's output has gone over the predefined voltage above normal. In most Astron power supply's the point of overvoltage is near 15 vdc. Astron Accessory Circuits OVPR 12V DX Engineering These power supplies have superb overvoltage protection circuit that will clamp the voltage of their power supply to near 0 volts when the output has exceeded the pre set maximum voltage. In most Astron power supplies, that point is near 15 Vdc. Index of Astron™ Power Supply Information at .repeater ... An internal reset circuit for the Astron Linear series A reset circuit provided by The Astron Corporation If you are inside your Astron for some other reason it's worth adding this as long as you have the cover off... Astron RS 20A low voltage problem ?'s | RadioReference ... The only way reset the crowbar circuit is to turn the supply off for about 5 minutes to let the stored voltage go to zero and release the SCR junction. Astron Corporation Power Supplies DX Engineering Astron Corporation Power Supplies. We ship in stock parts via ground shipping the same day if ordered by 10:00 pm (Eastern). Monday through Friday. Best Tech Advice and Customer Support, before and after your purchase! You can return any new or unused item within 10 days of the date your item was shipped and we will refund... Linear Power Supplies | Astron Corporation FOLD BACK CURRENT LIMITING Protects Power Supply from excessive current and continuous shorted output. CROWBAR OVER VOLTAGE PROTECTION ON ALL MODELS. MAINTAIN REGULATION AND LOW RIPPLE at low line input Voltage. THREE CONDUCTOR POWER CORD. HEAVY DUTY HEAT SINK Astron Power Supply Index Page repeater builder An internal reset circuit for the Astron Linear series A reset circuit provided by The Astron Corporation they call it the OVPR 12V by Kevin K. Custer W3KKC If you are inside your Astron for some other reason it's worth adding this circuit as long as you have the cover off. Trouble Shooting an Astron Linear Power Supply An Astron supply can have from one to many paralleled pass transistors. More current draw requires more of them. Because the current gain of these transistors can vary from lot to lot, a low value, series, current balancing resistor is added to each emitter output. Typically, 0.1 ohm, 5%, five or 10 Watt, wire wound. Repair of an Astron RS 35 Power Supply | KE8P.US Repair of an Astron RS 35 Power Supply. It had been involved in a near lightning strike experience that fried the loading coil on an antenna, among other things. The problem was that as soon as the supply was switched on, it would blow the fuse. The only thing that was obvious was that something was causing the SCR crowbar circuit to fire and blow the fuse to save the power supply.

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