Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Re\:\s+AB1\s+v\.\s+AB2\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Re\:\s+AB1\s+v\.\s+AB2\s*$/: 24 ]

Total 24 documents matching your query.

1. [Amps] Re: AB1 v. AB2 (score: 1): Author: bearlabs" <bear@bearlabs.com (bearlabs); Date: Sun, 1 Dec 2002 10:37:45 -0500; a an Separate minus voltage power supply fed via high impedance (resistors) to prevent loading down the drive voltage... -- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (ht; /archives//html/Amps/2002-12/msg00001.html (10,263 bytes)
2. [Amps] Re: AB1 v. AB2 (score: 1): Author: mark@sandlabs.com (mark); Date: Sun, 1 Dec 2002 11:13:07 -0500; In professional designs, the Grid Bias is applyied through a tap on the secondary of the input tuned transformer. Mark in be drive To: <amps@contesting.com>; /archives//html/Amps/2002-12/msg00002.html (11,585 bytes)
3. [Amps] Re: AB1 v. AB2 (score: 1): Author: DF3KV@aol.com (DF3KV@aol.com); Date: Sun, 1 Dec 2002 11:32:29 EST; In einer eMail vom 01.12.02 17:13:11 (MEZ) Mitteleurop=E4ische Zeit schreibt= =20 mark@sandlabs.com: -- StripMime Report -- processed MIME parts -- multipart/alternative text/plain (text body -- kept; /archives//html/Amps/2002-12/msg00004.html (7,797 bytes)
4. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Sun, 1 Dec 2002 09:12:19 -0800; ** What stops DC grid-current from flowing through such resistors whenever the grid is driven positive? - Rich..., 805.386.3734, www.vcnet.com/measures.; /archives//html/Amps/2002-12/msg00005.html (7,885 bytes)
5. [Amps] Re: AB1 v. AB2 (score: 1): Author: mark@sandlabs.com (mark); Date: Sun, 1 Dec 2002 14:22:40 -0500; The grid power supply is an integral part of a feedback loop that regulates the voltage to the optimum level and polarity for a particular class off operation. Mark; /archives//html/Amps/2002-12/msg00008.html (8,217 bytes)
6. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Sun, 1 Dec 2002 12:15:26 -0800; ** is the polarity ever other than negative.? - Does the grid supply regulate the level or allow the operator to adjust the level? - Rich..., 805.386.3734, www.vcnet.com/measures.; /archives//html/Amps/2002-12/msg00009.html (7,716 bytes)
7. [Amps] Re: AB1 v. AB2 (score: 1): Author: bearlabs@netzero.net (BEAR); Date: Sun, 01 Dec 2002 15:20:47 -0500; The grid current that flows is so insignificant that no appreciable current *can* flow, so the tube does not reach beyond AB1 in practical terms. In practice the output signal is merely clipped when; /archives//html/Amps/2002-12/msg00010.html (9,304 bytes)
8. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Sun, 1 Dec 2002 17:21:42 -0800; ** Eimac rates the maximum permissable grid bias ps source resistance for its tetrodes and pentodes. This determines how much grid-current can flow. In my experiences with AB1, there is a tradeoff i; /archives//html/Amps/2002-12/msg00011.html (10,145 bytes)
9. [Amps] Re: AB1 v. AB2 (score: 1): Author: bear@bearlabs.com (bear); Date: Mon, 02 Dec 2002 10:04:55 -0500; That is not the *only* way to present a 50 ohm termination to the amp's input and still not provide a low Z impedance to the grid. Typical is not terribly relevant to the discussion of amplifier clas; /archives//html/Amps/2002-12/msg00025.html (11,346 bytes)
10. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Mon, 2 Dec 2002 07:07:35 -0800; to ** How ? much - Rich..., 805.386.3734, www.vcnet.com/measures.; /archives//html/Amps/2002-12/msg00027.html (11,959 bytes)
11. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Sat, 30 Nov 2002 20:07:45 -0800; How is DC grid bias applied to the grids? - Rich..., 805.386.3734, www.vcnet.com/measures.; /archives//html/Amps/2002-11/msg00000.html (8,940 bytes)
12. [Amps] Re: AB1 v. AB2 (score: 1): Author: bearlabs@netzero.net (BEAR); Date: Fri, 29 Nov 2002 12:24:35 -0500; To: <amps@contesting.com> I dunno about that one... check a handbook. This is because in effect the load line is "longer" in AB2 than AB1. AB2 permits you to draw grid current, whereas AB1 does not.; /archives//html/Amps/2002-11/msg00398.html (9,710 bytes)
13. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Fri, 29 Nov 2002 10:40:17 -0800; To: <amps@contesting.com> ** AB2 doesn't permit anything. AB2 neans the operator Chose to drive the tube into its less-linear grid-current region. Up until that point, the tube is operating partly i; /archives//html/Amps/2002-11/msg00399.html (10,405 bytes)
14. [Amps] Re: AB1 v. AB2 (score: 1): Author: bearlabs" <bear@bearlabs.com (bearlabs); Date: Sat, 30 Nov 2002 10:51:05 -0500; To: <amps@contesting.com> over than pair 200-250 By *definition* AB2 means that the grid is driven positive with respect to the cathode - and regardless *is* in the grid current region. AB1 by defini; /archives//html/Amps/2002-11/msg00413.html (10,901 bytes)
15. [Amps] Re: AB1 v. AB2 (score: 1): Author: 2@vc.net (Rich); Date: Sat, 30 Nov 2002 09:09:30 -0800; To: <amps@contesting.com> ** increase drive to the point that grid current flows and the AB1 amp becomes an AB2 amp. ** with AC coupling, grid-current flows into the grid bias supply. well. ** so in; /archives//html/Amps/2002-11/msg00414.html (11,235 bytes)
16. [Amps] Re: AB1 v. AB2 (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 30 Nov 2002 09:42:42 -0800; - - One contribution is the swamping effect for the "feed through" or "feed forward" power from the driving source. - The terms can be misleading, as that portion of the drive power does not appear i; /archives//html/Amps/2002-11/msg00417.html (8,229 bytes)
17. [Amps] Re: AB1 v. AB2 (score: 1): Author: nagato@arnet.com.ar (Guillermo); Date: Sat, 30 Nov 2002 15:26:14 -0300; Which may be the reason for this?. Practical?. ** with AC coupling, grid-current flows into the grid bias supply. Anyway, with AC coupling it must have a DC return somewhere. Best regards Guillermo; /archives//html/Amps/2002-11/msg00418.html (7,828 bytes)
18. [Amps] Re: AB1 v. AB2 (score: 1): Author: bearlabs@netzero.net (BEAR); Date: Sat, 30 Nov 2002 14:05:43 -0500; To: <amps@contesting.com> it can't. If it can then it is an AB2 amp. _-_-bear WB2GCR -- _-_-bearlabs http://www.bearlabsUSA.com - Silver Lightning Interconnects & Custom Mods -; /archives//html/Amps/2002-11/msg00420.html (12,110 bytes)
19. [Amps] Re: AB1 v. AB2 (score: 1): Author: garyschafer@attbi.com (Gary Schafer); Date: Sat, 30 Nov 2002 18:09:59 -0500; To: <amps@contesting.com> So how would you "design an AB1 amp that could never go into grid current" with increased drive? 73 Gary K4FMX; /archives//html/Amps/2002-11/msg00423.html (12,529 bytes)
20. [Amps] Re: AB1 v. AB2 (score: 1): Author: bearlabs@netzero.net (BEAR); Date: Sat, 30 Nov 2002 18:11:47 -0500; To: <amps@contesting.com> At least at audio frequencies that is done by AC coupling to the grids... At RF I'm not sure at the moment - but by definition the difference is grid current vs. no grid cur; /archives//html/Amps/2002-11/msg00424.html (13,896 bytes)

Current List: 1 - 20
Page: [1] [2]