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Total 17 documents matching your query.

1. [AMPS] Additional Tube Brand Question (score: 1): Author: Michael Tope" <W4EF@dellroy.com (Michael Tope); Date: Thu, 1 Feb 2001 05:20:50 -0800; Stan, Do you know what the resting Ep rating was for the stock L-4B? My L-7 run around 2500V, and I am wondering how much higher I can run that before I start having to change tank components and the; /archives//html/Amps/2001-02/msg00001.html (11,702 bytes)
2. [AMPS] Additional Tube Brand Question (score: 1): Author: bjk@ihug.co.nz (Barry Kirkwood); Date: Thu, 1 Feb 2001 22:01:21 +1300; As I recall ran about 3kV with better than 5% regulation. Cannot recall resting dissipation, but it would have been OK. If high the way to go is to increase the value of zener bias, IMO. 73 end Barry; /archives//html/Amps/2001-02/msg00004.html (12,760 bytes)
3. [AMPS] Additional Tube Brand Question (score: 1): Author: 2@vc.net (measures); Date: Thu, 1 Feb 2001 04:49:43 -0800; zeners cost way more than a string of forward biased diodes -- and zeners are not adjustable. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps S; /archives//html/Amps/2001-02/msg00006.html (7,935 bytes)
4. [AMPS] Additional Tube Brand Question (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 1 Feb 2001 12:53:51 -0000; Zeners are also, especially at voltages around 5.5 to 6.5 volts, far more temperature stable. In fact, at about 6 volts, they're pretty close to a zero temp co, while diodes have a -2mV/deg C temp co; /archives//html/Amps/2001-02/msg00007.html (8,220 bytes)
5. [AMPS] Additional Tube Brand Question (score: 1): Author: 2@vc.net (measures); Date: Thu, 1 Feb 2001 05:11:43 -0800; How useful is a zener that produces too much or too little ZSAC? - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.c; /archives//html/Amps/2001-02/msg00010.html (8,347 bytes)
6. [AMPS] Additional Tube Brand Question (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 1 Feb 2001 13:19:18 -0000; How useful is a bias voltage that wanders with temperature? If you have 10 diodes to get about 7 volts, that will reduce by over 1/4 volt for a 20 degree rise. Of course, the ZSAC may be so non criti; /archives//html/Amps/2001-02/msg00012.html (8,637 bytes)
7. [AMPS] Additional Tube Brand Question (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 1 Feb 2001 07:56:52 -0500; Hi Mike, You can not raise the HV too much before getting into trouble. Using a similar (same brand and model but with optimal contact arrangements) switch in failure tests, just under 3kV was the li; /archives//html/Amps/2001-02/msg00013.html (8,715 bytes)
8. [AMPS] Additional Tube Brand Question (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 1 Feb 2001 08:50:48 -0500; Peter, Rich suggests series rectifiers as zeners. Like with neutralization or parasitics, nothing else in the world except his exact ideas are acceptable. It doesn't matter if the regulation is wors; /archives//html/Amps/2001-02/msg00014.html (8,994 bytes)
9. [AMPS] Additional Tube Brand Question (score: 1): Author: 2@vc.net (measures); Date: Thu, 1 Feb 2001 07:33:16 -0800; I see no such problems on my TL-922. The Henry Radio 2k-4 and 3K-A use a string of 10 diodes to furnish c. 7v of cathode bias. cheers - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on W; /archives//html/Amps/2001-02/msg00016.html (8,326 bytes)
10. [AMPS] Additional Tube Brand Question (score: 1): Author: 2@vc.net (measures); Date: Thu, 1 Feb 2001 07:33:14 -0800; How many "neutralized" G-G amplifiers did ETO/Alpha manufacture? How many "neutralized" G-G amplifiers did Henry Radio manufacture? How many "neutralized" G-G amplifiers did Collins Radio manufactur; /archives//html/Amps/2001-02/msg00017.html (9,419 bytes)
11. [AMPS] Additional Tube Brand Question (score: 1): Author: da_kang@hotmail.com (Jeff Wolf); Date: Thu, 01 Feb 2001 16:04:23; I found an easy fix for that. Use #12 wire (what I had on hand) to run a string of zeners perfboard mounted to the fan entrance to the SB220. A simple angle bracket attached the zeners to the stock; /archives//html/Amps/2001-02/msg00019.html (8,537 bytes)
12. [AMPS] Additional Tube Brand Question (score: 1): Author: 2@vc.net (measures); Date: Thu, 1 Feb 2001 09:08:00 -0800; Amen to that. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting; /archives//html/Amps/2001-02/msg00022.html (8,534 bytes)
13. [AMPS] Additional Tube Brand Question (score: 1): Author: da_kang@hotmail.com (Jeff Wolf); Date: Thu, 01 Feb 2001 17:20:12; Sorry, had other things in mind. Replace "zeners" in the above statement with "diodes". I use the Rich Measures method of tapping ordinary silicon diodes, but took into acct. the temperature drift a; /archives//html/Amps/2001-02/msg00023.html (8,543 bytes)
14. [AMPS] Additional Tube Brand Question (score: 1): Author: bjk@ihug.co.nz (Barry Kirkwood); Date: Thu, 1 Feb 2001 15:59:43 +1300; This is a multi-part message in MIME format. --=_NextPart_000_006A_01C08C67.FDBB3B00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I used an L-4B happily; /archives//html/Amps/2001-01/msg00002.html (11,252 bytes)
15. [AMPS] Additional Tube Brand Question (score: 1): Author: k5go@alltel.net (Stan Stockton); Date: Wed, 31 Jan 2001 21:57:34 -0600; Without question, replace the power supply with something a lot heavier and with more plate voltage than the original. Remember that it was designed when the legal limit was about 40% (1000W INPUT) o; /archives//html/Amps/2001-01/msg00003.html (8,959 bytes)
16. [AMPS] Additional Tube Brand Question (score: 1): Author: jsetcer@cswnet.com (J. Setcer); Date: Wed, 31 Jan 2001 22:08:33 -0600; This is a multi-part message in MIME format. --=_NextPart_000_017A_01C08BD2.5A404B90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable So is there something s; /archives//html/Amps/2001-01/msg00004.html (13,245 bytes)
17. [AMPS] Additional Tube Brand Question (score: 1): Author: jbcooper@uswest.net (Jason Cooper); Date: Wed, 31 Jan 2001 12:59:52 -0700; This is a multi-part message in MIME format. --=_NextPart_000_0076_01C08B85.B3418260 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi All, I am about to r; /archives//html/Amps/2001-01/msg00777.html (8,630 bytes)

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