Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. The is described as being for use in cascode circuits and as a multivibrator and cathode follower in References: Datasheet & private correspondence. E88CC-TK TUBE DATA SHEET. Mechanical. Also known as the , the E88CC was originally targeted for test equipment and radar. The E88CC has.
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Again, just for a triode. The input and driver tubes for each channel have to be biased. Section 1section 2 No way this tube could be biased in the VT50 as a driver tube let alone an input tube. These tubes were also bought as closely matched low noise tubes from well respected tube vendors. This variance may be both horizontal and verticle. Nope that’s not what I was attempting to ask. Rp is plate resistance of a tube section, triode, tetrode, pentode etc.
Not knowing how 69222 would turn out I tested several other used, that tested like near new, EH tubes in a Hickok a Mutual Conductance tube tester.
My customer was reviewer Rich Weiner who wrote for Bound for Sound.
@ The Valve Museum
If I understand your questions, why are not datasgeet triodes matched more closely and what is ohms law. Cookies help us provide you a better browsing experience.
Whether the reduction in hfr will affect one’s perception will depend upon several factors. They are maximum anode voltage Va and Va b. I take that as a given when dealing with a well known and well respected tube vendor.
Jim My apologies to the OP for getting off topic. Next read note 7 And there is the rub. Here is the bias adjust procedure for the VT50 http: If we keep the plate to cathode voltage constant, and alter the grid to cathode voltage, the plate current will change.
If the filament or cathode is operated continuously with a higher voltage than that recommended, some of the coating material is evaporated and permanently lost, thus reducing the life of the valve. Steve, You’re playing well within bounds as far as I’m concerned, and I’m learning a heck of a lot in the exchange, datashset thank you.
By the way, Telefunken was known for gettinghours on their 12ax7 “family” under typical conditions. This string will be long gone. ACHiPo on 17 Jan Cheers Steve Logged jea48 Jr. Maximum Allowable Anode Voltage and Anode Dissipation Moving in the opposite direction along the load line, we use the harder and harder, until finally there is no voltage across it.
Next, I am not going take sides, to explore operating a 7. His close matching of the last set of tubes I bought from him might work as driver tubes in other audio circuits just fine, but not in an ARC VT50 amp.
I think this equation will help. Let me try again. Moreover, some of this vapour tends to deposit on the grid and give rise to what is known as grid emission when the grid itself emits electrons and draws current commonly known as negative grid current I’ve gotten used to a very nice solid state pre, and then when that died, listened straight from the DAC to the amps, so maybe this is what it always sounded like, but it doesn’t seem right and I’m not that crazy about it.
I will say he is well known and respected. So it is better not to use 6v but a little higher.
Not a lot better than before I replaced its 15 year old tubes. I do in my preamps, but amplifiers, expecially the output tube, this is a consideration that needs to be addressed. Ratasheet run my tubes in the 11A less than typical plate current. The plate structure between sections may be sheped slightly different.