- 1. Re: [Amps] New FET's (score: 1)
- Author: "Iezzi Family" <slifamily@earthlink.net>
- Date: Wed, 9 Feb 2005 20:46:47 -0500
- These are Radiation Tolerant parts for spaceflight and the $80 price tag is a bargain for what you get. Steve KT4FY Got an e-mail earlier today about International Rectifier having a new FET that wou
- /archives//html/Amps/2005-02/msg00368.html (8,136 bytes)
- 2. Re: [Amps] TL-922 Help (score: 1)
- Author: "Iezzi Family" <slifamily@earthlink.net>
- Date: Thu, 24 Feb 2005 19:42:42 -0500
- The current meter on my TL-922 was off a bit. I had to borrow a current probe and adjust a resistor value to get it right. However, the actual idle current for my amp is 60 mA in CW position and 120
- /archives//html/Amps/2005-02/msg00791.html (8,876 bytes)
- 3. Re: [Amps] ACOM 2000A (score: 1)
- Author: "Iezzi Family" <slifamily@earthlink.net>
- Date: Wed, 8 Jun 2005 22:43:07 -0400
- I purchased one and installed it on an experimental Navy ship. It was connected to a 28 foot mast on deck and was adjusted to auto tune and transmit at 500 watts. It ran very well for about a year an
- /archives//html/Amps/2005-06/msg00058.html (7,640 bytes)
- 4. Re: [Amps] HV Switch Mode Power Supplies (score: 1)
- Author: "Iezzi Family" <slifamily@earthlink.net>
- Date: Wed, 22 Jun 2005 21:03:33 -0400
- The primary side of a typical High Voltage AC/DC SMPS would be typical of any other off-line converter. The secondary side could be implemented with simple diode rectfication and a divider for the f
- /archives//html/Amps/2005-06/msg00188.html (10,539 bytes)
- 5. Re: [Amps] CW and High Voltage (score: 1)
- Author: "Iezzi Family" <slifamily@earthlink.net>
- Date: Sun, 4 Sep 2005 09:14:21 -0400
- I also have a TL-922. When I first got the Kenwood, I always adjusted for peak power but received reports of poor audio quality. With the help of some pricey lab equipment that I have access to at wo
- /archives//html/Amps/2005-09/msg00038.html (12,750 bytes)
- 6. Re: [Amps] SWR Foldback driving a TL922 (score: 1)
- Author: "Iezzi Family" <slifamily@earthlink.net>
- Date: Sun, 18 Sep 2005 19:06:08 -0400
- I have a TL-922 and have driven it with a TS-850 with no problems. My cable is about 4 feet long. The tune-up procedure in the manual is unusual. Did you try it? Steve KT4FY _________________________
- /archives//html/Amps/2005-09/msg00216.html (8,715 bytes)
- 7. Re: [Amps] Anyone Recognize These Components? (score: 1)
- Author: "slifamily" <slifamily@earthlink.net>
- Date: Thu, 15 Jun 2006 18:20:10 -0400
- The circuit on the left appears to an optocoupler with a MOSFET for current amplification. The circuit on the right appears to diode bridge detector. This could be a circuit for switching bias when t
- /archives//html/Amps/2006-06/msg00298.html (8,740 bytes)
- 8. Re: [Amps] making aluminum heat sinks black (score: 1)
- Author: "slifamily" <slifamily@earthlink.net>
- Date: Sat, 22 Jul 2006 10:04:03 -0400
- In a former job, we built black body radiators used for calibration of missile seekers. We used Krylon ultra flat black paint. It had very high emissivity at long infrared wavelengths. The aluminum w
- /archives//html/Amps/2006-07/msg00854.html (8,588 bytes)
- 9. Re: [Amps] making sinks black (score: 1)
- Author: "slifamily" <slifamily@earthlink.net>
- Date: Sat, 22 Jul 2006 13:11:10 -0400
- I have heard it said that this is largely true at extreme temperatures. Might be nice to have someone dissipate a "real world" amount of power (say 100 watts) in a heat sink of raw aluminum and do it
- /archives//html/Amps/2006-07/msg00882.html (8,169 bytes)
- 10. Re: [Amps] Optoisolator for Keying Collins 30L-1 to Modern Rigs (score: 1)
- Author: "slifamily" <slifamily@earthlink.net>
- Date: Sat, 9 Dec 2006 10:27:48 -0500
- Thanks for the clear and detailed answer. I impulsively bought the Ampkeyer recently which really is a great value and beautifully constructed. But the Ampkeyer manual says not to use the MOSFET circ
- /archives//html/Amps/2006-12/msg00050.html (8,419 bytes)
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