Re: [Elecraft] K3 overvoltage protection

2012-12-17 Thread PKA
...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] På vegne af G4HUE Sendt: 15. december 2012 13:26 Til: elecraft@mailman.qth.net Emne: [Elecraft] K3 overvoltage protection Hi guys, I am a new owner of a K3 serial number 6990 (must say I am mighty impressed by it) and considering its cost I

Re: [Elecraft] K3 overvoltage protection

2012-12-17 Thread G4HUE
) for D28 . 73/OZ4UN -Oprindelig meddelelse- Fra: [hidden email] [mailto:[hidden email]] På vegne af G4HUE Sendt: 15. december 2012 13:26 Til: [hidden email] Emne: [Elecraft] K3 overvoltage protection Hi guys, I am a new owner of a K3 serial number 6990 (must say I am mighty impressed

[Elecraft] K3 overvoltage protection

2012-12-15 Thread G4HUE
Hi guys, I am a new owner of a K3 serial number 6990 (must say I am mighty impressed by it) and considering its cost I wondered if it had overvoltage protection. I dread the thought of destroying my K3 due to PSU failure! I have searched the past postings and cannot find anything relevant to the

[Elecraft] [K3] Overvoltage protection?

2010-02-28 Thread Dan Jean
I recently purchased a 35 amp Astron power supply at a hamfest (in great condition). Upon inspection, I found that the crowbar SCR had failed, and had been removed. Although I've replaced the SCR, I'm wondering if the K3 has overvoltage protection of some kind? As an aside, I would like to

Re: [Elecraft] [K3] Overvoltage protection?

2010-02-28 Thread Tom Hammond
Dan: If the Astron is working AS INTENDED, when the OVP SCR fires, the UA723 VReg will immediately go into over-current protect mode, reducing the output current to 1A WITHOUT damaging ANYTHING! Same as if you placed a short directly across the output terminals of the supply. The ONLY time the

Re: [Elecraft] [K3] Overvoltage protection?

2010-02-28 Thread Hardy Landskov
To: Dan Jean dml...@gmail.com; elecraft@mailman.qth.net Sent: Sunday, February 28, 2010 7:35 PM Subject: Re: [Elecraft] [K3] Overvoltage protection? Dan: If the Astron is working AS INTENDED, when the OVP SCR fires, the UA723 VReg will immediately go into over-current protect mode, reducing