Author Topic: triode vacuum tube help.  (Read 1820 times)

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Offline blackbeardTopic starter

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triode vacuum tube help.
« on: February 12, 2010, 08:36:34 AM »
ok so i have a bunch of vacuum tubes and i would like to play around with them (i.e. make an amplifier or a radio). i think a diode tube is pretty self explanatory but i'm having some trouble understanding a triode. from what i understand it's the same as a diode tube except that between the cathode and the anode there is a grid where your input would go. what i am wondering (since there is virtually no documentation) is if you were to put a sine wave through the grid then how would it be amplified? does the heater give off electrons the same way one does in a CRT tube providing the amplification or does the tube act more like a transistor? since it's so similar to a diode tube does that mean that it will only let power flow through it one way? i only have a dozen or so 6201 dual tiode tubes as well as a few odd tubes i have yet to identify so i'd like to avoid burning them out. also is it acceptable to mix vacuum tubes and semiconductors (such as diodes) or do they not work well together?
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Offline waltr

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Re: triode vacuum tube help.
« Reply #1 on: February 12, 2010, 08:50:15 AM »
Try googling:
Triode amplifer

Offline blackbeardTopic starter

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Re: triode vacuum tube help.
« Reply #2 on: February 12, 2010, 09:10:19 AM »
thanks but i have searched that. i am more interested in understanding the fundamentals then looking at a circuit
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Offline waltr

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Re: triode vacuum tube help.
« Reply #3 on: February 12, 2010, 10:52:37 AM »

Offline blackbeardTopic starter

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Re: triode vacuum tube help.
« Reply #4 on: February 12, 2010, 11:06:51 AM »
please stop posting google suggestions. i am quite capable of googling thank you and your input is not helpful.
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Offline waltr

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Re: triode vacuum tube help.
« Reply #5 on: February 12, 2010, 12:41:30 PM »
ok

Offline Soeren

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Re: triode vacuum tube help.
« Reply #6 on: February 13, 2010, 09:40:43 PM »
Hi,

please stop posting google suggestions. i am quite capable of googling thank you and your input is not helpful.

Oh, then I guess you shouldn't read any of these tuorials (which you have probably allready found during your quite capable Googling).
Too bad really, since some of them is quite informative for a beginner.
Regards,
Søren

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Please remember...
Engineering is based on numbers - not adjectives

Offline blackbeardTopic starter

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Re: triode vacuum tube help.
« Reply #7 on: February 14, 2010, 01:22:52 PM »
i'm sorry if my statement was offensive and i meant it as inoffensive and factual as possible. in any case i thank you both for your input.

for those that are looking i found some really good youtube videos that are pretty helpfull and i also found that digging arround in some old equipment (carefully) was also very helpfull.

Vacuum Tube: How Does It Work? (Part 1)


Vacuum Tube: How Does It Work? (Part 2)


Vacuum Tube: How Does It Work? (Part 3)


i also found a site that has data-sheets for many tubes

http://frank.pocnet.net/
"sure, you can test your combat robot on kittens... But all your going to do is make kitten juice"

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