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1. [Amps] Dummy Loads & Carborundum Resistors QRO (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Thu Jun 26 08:14:24 2003; Anyone out there have solid technical information on Dummy Loads & Carborundum Resistors?? My old Heathkit Cantenna has a ~1" dia x ~5" (iirc) grey carborundum resistor, sitting in a can of oil. (rat; /archives//html/Amps/2003-06/msg00216.html (7,709 bytes)
2. [Amps] Re: Aluminum plate trick? (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Sun Jun 29 09:37:17 2003; IF it's the aluminum doing something that steel wouldn't do it is causing eddy currents to flow through it, shunting the magnetic field slightly... perhaps this is causing a change in the lams slappi; /archives//html/Amps/2003-06/msg00235.html (6,884 bytes)
3. [Amps] --> Reminder: When Posting a REPLY (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Mon Mar 10 11:35:16 2003; Folks, just a reminder: When posting a REPLY, be *sure* not to quote the *entire* digest's contents! If you merely hit "reply" that is precisely what you will do, unless you go down through your emai; /archives//html/Amps/2003-03/msg00427.html (6,568 bytes)
4. [Amps] Re: neon tranny & HV diodes (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Sat Mar 15 19:40:34 2003; Just catching up... Very *bad* idea to use a neon sign transformer for the bias on an electrostatic air cleaner filter element. WAY too much CURRENT!! DANGER WILL ROBINSON!! Deadly dangerous. Far bet; /archives//html/Amps/2003-03/msg00591.html (6,733 bytes)
5. [Amps] Speaking of filaments...& regulation (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Mon Feb 3 15:42:26 2003; Thinking about the issue of keeping the filaments cooking at +/- 5% of nominal rating for longest life... Seems to me that a saturable core type transformer would fit that bill perfectly... certainly; /archives//html/Amps/2003-02/msg00043.html (7,182 bytes)
6. [Amps] Speaking of filaments...& regulation (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Tue Feb 4 12:00:21 2003; In the USA, that's a moot issue. At my QTH, quite moot. Not running on a generator... not likely to run a kilowatt on a generator, if I have to go to emergency back up power. Like a motor controller; /archives//html/Amps/2003-02/msg00074.html (9,083 bytes)
7. [Amps] RE: 4cx150 linear (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Tue Feb 4 18:30:16 2003; Nice pix! My 2 cents worth... others may have better thoughts on this... I'd trace the circuit, since there's really not much to a linear... Start from the output and go to the input... it will look; /archives//html/Amps/2003-02/msg00087.html (7,618 bytes)
8. [Amps] Re: Filament voltage regulation (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Thu Feb 6 13:21:43 2003; I am interested in the thing - can you email me either references on the circut design and/or your proposed actual circuit design? Also, what sort of output waveform do you anticipate the thing will; /archives//html/Amps/2003-02/msg00109.html (7,424 bytes)
9. [Amps] RE: Low Noise Fan (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Sun Feb 16 13:54:25 2003; In general, larger fans run at lower RPMs are the quietest. You can outboard a larger fan and run the air through a length of ducting, flexible or solid as long as it is a "squirrel cage" type blower; /archives//html/Amps/2003-02/msg00336.html (7,112 bytes)
10. [Amps] Re: Fans/speed/varying (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Mon Feb 17 12:17:47 2003; Bernie, WB5HBM, wrote that he would avoid using DC fans since the motors produced "significant" noise compared to AC fans... I wonder if this thought refers to the older "brush" type DC motor and not; /archives//html/Amps/2003-02/msg00347.html (6,574 bytes)
11. [Amps] Re: Grain of Wheat bulbs (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Sun Feb 23 22:17:15 2003; I've been replacing them with Super Ultra High Brightness LEDs... I put a nice RED one into my TS-440 for the front display... great for night work, but not so good for reading the S meter... will re; /archives//html/Amps/2003-02/msg00430.html (6,624 bytes)
12. [Amps] Re: Saving Vacuum (score: 205): Author: bearlabs at netzero.net (BEAR); Date: Tue Jan 28 09:54:45 2003; This is a highly technical question and requires a detailed explanation. Rich may or may not be fully up on these aspects... The key to the process is the method of recovering and saving the vacuum.; /archives//html/Amps/2003-01/msg00266.html (7,214 bytes)

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