I have two related questions relating to the subject above, and would appreciate advice. In more detail: I am beginning the design of a 160 - 10M amplifier that will be cathode-driven, push-pull, pro
1. You may mean 1.2 AMPS, not ma, plate current. However, DC input power of 1.2 amps plate current at 2800 V is 3.36 kw, not 2.45 kw. 2. I don't think 45% efficiency is bad for an AB2 amplifer at 50
It will depend on several matters, such as whether it will be for choke-or capacitor- input, whether it will be for Continuous Commercial Service (CCS) or Intermittent Commercial or Amateur Service (
RE: Truly Balanced Tuner, from Richard Schmidt and Bill Fuqua: ** Does anyone know where or how to obtain assembled swinging links such as suggested, or a good source of the hardware that would be us
I've recently learned the hard way that if you are looking for power tubes for making an amplifier, the search for the tubes can be the easiest part of the quest. It took me longer to find sockets fo
If VE3CUI/VE3XZ is referrring to "Glyptal", I knew it as a thick, gooey liquid material used to hold screws such as on variable inductors in place against vibration. It is/was a "reddish-brown anti-c
At the risk of mentioning something that is already familiar to the readers of this thread, but since it has been discussed for a while now (and because making an idiot of myself is not an unfamiliar
FYI, Ten-Tec recently started making a "clipper" that operates on the IF, not the voice/audio signal. Of course, it is designed for their transceivers, but is adaptable to other makes. Gene May WB8WK
I am also interested in audio HiFi design, and have wondered why some IM tests for products in that field use three (non-harmonically related) frequencies, while most only use two. Using three well-s
Resent. I recently misstated how the TenTec Speech Processor works, sorry. Here it is more correctly. The device, their model 715, listing at 249 dollars, is connected between one's mike and transcei
(1) I think this would be a BAD idea. Some time ago, I bought a bunch of electrolytic caps to be used in a 3 KV plate power supply. Out of curiosity, I put some DC across them for a couple of hours a
Amen!!! Gene May, WB8WKU Btw: Is it true that these tubes contain Berylium oxide and thoriated thungsten? What is the health risk going out from an opened tube? ______________________________________
1. I, too, have shared Bob K6UJ's experience with an electrolytic cap exploding, and the mess was awful enough to make me conservative about the issue of replacement. The goo between the foil seems t
I often wonder why so many amplifiers are designed so that the full ZSAC flows when the user isn't actually transmitting. . . . . This applies to VOX or PTT voice and data modes, too, although the h
While following this thread, I read of G3SEK's kit for this purpose. It is well documented on-line -- see www.ifwtech.co.uk/g3sek/ -- and an article he published in QEX that summarizes much of what h
Well, at least the ad doesn't say the amp is for 11 meters. Gene May WB8WKU _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/l
Reference the thread about this: The PIV across each diode in a bridge will be the peak voltage of the transformer voltage. . . . . , I offer some words of caution: How the reverse voltage disributes
Good question, thanks. This was done a couple of decades ago, I admit. I can't remember the part number, but they were rated at 2.5 amp and all the same lot from a major reputable manufacturer. I've
This is a semi-new thread, branching off the discussion related to cable connections that started on "Tubes vs. Solid State" then went on to "Soldering vs. Crimping": I hope it isn't too stupid a que
Concerning this recent thread, I would like to add my comments and experience to the following: Don W4DNR All, I, too, have received misleading advice many years ago from the local RS counter guy, wh