"Gerry" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- I'm not sure that 30 amps would be appropriate. I believe there may be transients that may occur from time to time, depending on operating conditions. The sense circuit may then respond too fast and shut down the supply. This is probably why current trip was set at more than 30 amps to begin with. Setting this parameter exactly to spec can be a problem unless you have access to an active load, something few of us have.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kevin LaHaie Sent: Saturday, March 18, 2006 10:49 PM To: [email protected] Subject: [drakelist] Follow up to PS7 Regulation Problem Kevin LaHaie <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- Hello List, and thanks to all the suggestions on the PS7 supply that was shutting down around 4v. The supply is working, and truthfully I am not certain what I did to make it work. I did examine the pass transistors, 3 of which had been replaced, and I think an emitter might have been shorted to the case on the way through the heatsink, or perhaps there was a short to the collector through the mica insualtor. Anyway, it is now working, I have set the adjustment to 13.5v, and with full output on the TR7 in CW mode, a solid, steady voltage. Nice 40 minute QSO on 40 meters and report of great signal and fine audio was reported. Yeah! Now, my final question! What is the best way to set the regulation board to trip at 31 to 32 amps? I know there are lots of ways to load up the amp with calculated load resistance to make it draw 32 amps, but I hardly think that is the 'official' way. any help to a tip / trick to make sure the supply will trip shortly after delivering 30 amps? Thanks in advance! 73 Kevin K7ZS -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.2.5/284 - Release Date: 3/17/2006 --- [This E-mail Scanned for viruses by Online Northwest] ---------------------------------------------------------------------- Submissions: [email protected] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ---------------------------------------------------------------------- ---------------------------------------------------------------------- Submissions: [email protected] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
