Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+NTC\s+thermistors\s+as\s+soft\s+start\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+NTC\s+thermistors\s+as\s+soft\s+start\s*$/: 6 ]

Total 6 documents matching your query.

1. [Amps] NTC thermistors as soft start (score: 1): Author: Conrad PA5Y <g0ruz@g0ruz.com>; Date: Thu, 28 Jan 2016 14:22:12 +0100; I have just acquired a GS35B PSU. It is 3 phase and the schematics show 3 x NTC thermistors in series with each primary. I presume that these are some kind of soft start. I am not familiar with these; /archives//html/Amps/2016-01/msg00070.html (7,281 bytes)
2. Re: [Amps] NTC thermistors as soft start (score: 1): Author: Conrad PA5Y <g0ruz@g0ruz.com>; Date: Fri, 29 Jan 2016 11:20:44 +0100; Yes for the heater transformer I will leave them in but for the HV supply I am uncomfortable with them. The resistance varies with load so how can this be good for anode supply regulation? The parts; /archives//html/Amps/2016-02/msg00007.html (9,913 bytes)
3. Re: [Amps] NTC thermistors as soft start (score: 1): Author: "Saandy" <alexeban@gmail.com>; Date: Tue, 2 Feb 2016 18:02:47 +0200; The problem with NTC resistors in a HV power supply is not regulation: when they're hot their resistance is low and have no effect. The problem is recovery time. I the power supply is working and you; /archives//html/Amps/2016-02/msg00014.html (11,931 bytes)
4. Re: [Amps] NTC thermistors as soft start (score: 1): Author: MU 4CX250B <4cx250b@miamioh.edu>; Date: Tue, 2 Feb 2016 09:40:25 -0600; It's true that the resistance of inrush current limiters varies with the load, but the time constant is long, 30 seconds or longer, for the resistance to return to the initial cold value. They work f; /archives//html/Amps/2016-02/msg00016.html (11,188 bytes)
5. [Amps] NTC thermistors as soft start (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Wed, 3 Feb 2016 06:02:38 -0800; The problem with NTC resistors in a HV power supply is not regulation: when they're hot their resistance is low and have no effect. The problem is recovery time. I the power supply is working and you; /archives//html/Amps/2016-02/msg00022.html (9,524 bytes)
6. Re: [Amps] NTC thermistors as soft start (score: 1): Author: Conrad PA5Y <g0ruz@g0ruz.com>; Date: Sat, 6 Feb 2016 09:46:29 +0100; I have changed them out for a traditional soft start, in fact the one shown on the GM3SEK triode board. I have used this circuit many times and trust it totally. Regards Conrad PA5Y On 02/02/2016 17:; /archives//html/Amps/2016-02/msg00028.html (11,971 bytes)

Current List: 1 - 6
Page: [1]