Following the riaa stage is a triodeconnected ef1845ej7 with a ixys ccs as a plate load. Ive been comparing ge and rca 5879 input tubes, as well as some miniature tubes. I am currently using the ixys part muconnected, which gives a very low output impedance. The 6j51p 651 highfrequency shortcharacteristic pentode has been designed to amplify intermediatefrequency voltage in wideband amplifiers. The octal preamp tubes i am familar with were used in tweed fenders and many other vintage tube amps. Extension tube ef 12 is especially suited for closefocusing with wideangle lenses. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications it was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. Tube ef 184 or rohre ef184 id3431, vacuum pentode, noval, b9a and rfif stage shown. This is my humble contribution to that warm and unique sound that the valves provide to our ears. Data from or other sources as supplied by john atwood. The canon ef12 extension tube is an intermediate ring for closeup photography. The 6sj7 is a pentode preamp tube that was used in the first fender champ.
Ac2 triode for use as af amplifier or as oscillator together with an ah1. This beacuse a plate resistor would translate in a max value of 10 kiloohms with. Reviewed in the united states on june 28, 2011 as a photographer, i have been taking photos and improving my range of abilities over the years. Canon auto focus extension tube ef 25 ii 9199a001 adorama. W hat started out as a classic single ended design transformed into a very good amplifier. Technical data sheet ef24a rotary actuator failsafe for adjusting dampers in technical building installations air damper size up to approx. However, take a look at the moonlight by adam alpern preamp. Our preferred method of payment is via wire transfer of funds. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications. So if you have a 12ax7 you have 1 in and 100 out, a tube like a 12au7 is 1 in and 20 out. The ef80 worked well at 40 mhz and also gave adequate performance at up to 100 mhz. Safety data sheet ghs product identifier other means of identification product type emergency telephone number with hours of operation section 1.
Aluminuim spinner in the pnf format the efxtra will still. Franks tube data to reduce parasitic series inductances all three electrodes had multiple pins allocated. Vacuum tube 6ej7ef184, pentode, sharp cutoff antique. The ef80 was superseded in the 1960s by the higher slope frame grid ef184 the ef183 being the variable. With a classic design i mean a smaller valve for voltage amplification and a power valve driving the output transformer. The combustion gases are then forced downward through eight 2 3rd pass heat exchanger tubes and reach the exhaust collector at a temperature of approximately 120f. Jan 25, 2014 the ef tube may have a better potential as a substitute for the vf14 than the ef14, provided that an optimum, linear operating point is chosen, as already stated earlier. Find the user manual you need for your car audio equipment and more at manualsonline. It supports hot swapping for uninterrupted service. Efb24s n4 damper actuator technical data sheet nema 4, onoff, spring return, 24 v. Ef 12 importproblemmanual translation correction duration. Canon auto focus extension tube ef 25 ii for closeup and macro photography. The us number for the ef806s audio pentode is 6291.
The ef tube may have a better potential as a substitute for the vf14 than the ef14, provided that an optimum, linear operating point is chosen, as already stated earlier. The 6j51p pentodes are miniature devices enclosed in glass bulb and are provided with a sevenpin base, rigit leads and an indirectly heated oxidecoated cathode. Svetlana ef86 highperformance audio smallsignal pentode t. Tech international, 200 east coshocton street, johnstown, ohio 43031, 7409679015 tech rubomatic. It was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. The 6f5p triodepentodes are miniature devices enclosed in glass bulb and provided with ninepin base leads and an indirectly heated oxidecoated cathode. New old stock pre amp compatible tubes from western electric, raytheon, amperex. Unlike many pentodes it was designed specifically for. To get the needed voltage drop from the 250 volts supply i decided to go for a ccs.
Ef806s audio pentode ef86 replacement valve tube guitar amps. Svetlana ef86 highperformance audio smallsignal pentode he svetlana ef86 is a glass envelope miniature pentode intended for highquality audio preamplifier service. This is actually a radio frequency amplifier and it will handle audio frequencies with ease. Potential acute health effects date of issuedate of revision. Efb24s damper actuator technical data sheet onoff, spring return, acdc 24 v. Ef500r uses several power saving technologies and also has an extended battery for an even longer battery cycle. Overview of both the older vhf and new uhf television broadcast standards. If you have never used this facility before, click the help link.
Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance. With almost datasheets and the visitor counter indicates over 4000. View and download neostar electronics ef453s installation instructions manual online. View and download efd 1500xl operating manual online. Since the internal resistance ri of the ef is similar to that of the vf14, an added plus would be its compatibility with the original u47 output transformer.
No action shall be taken involving any personal risk or without suitable training. Welcome to the tube data sheet locator, a popular web resource for finding data on vacuum tubes. Can i solicit some opinions from anyone who has tried any octal preamp tubes. Quality russian 6j51p tube was made in ussr for the military equipment. The cascode is dc coupled to the phase inverter, via the voltage divider of 820k and 270k ohms. This is the amplification factor, and has nothing to do with overdrive.
Game maker tutorial create street fighting game part 1. The ef184 is a purpose designed high gain frame grid pentode. Extension tube ef 12 ii is especially suited for closefocusing with wideangle lenses. The ef806s audio pentode, ef86 replacement from jj electronic is a brand new replacement for the famous ef86 from the 1950s and 1960s.
Description the 6f5p triodepentode is designed for operation in vertical sweep units of widely used television receivers. Original siemens ef184 6ej7 rohre tube pentode nos nib. Each ef806s is tested by us n our avo tester to ensure you receive a good quality valve. Tube ef 184 or rohre ef184 id3431, vacuum pentode, noval, b9a and rfifstage shown. This means that the voltage at the grid of the ef184 is. Advantages the ef series exclusive technologies and features. Neostar electronics ef453s installation instructions manual.
In those days all british tvs were monochrome, 405line standard, with a typical video if of 33 mhz. Tube depot carries a selection of 417a 5842 pre amp vacuum tubes. As an enthusiast of electronics, here is my repository around valves, hifi amplifiers and everything i found interesting to share related to music reproduction. Efb24s n4 damper actuator technical data sheet nema 4, onoff, spring return, 24 v 8005439038 usa 8668057089 canada 2037918396 latin america caribbean. Finden sie topangebote fur original siemens ef184 6ej7 rohre tube pentode nos nib new bei ebay. Following the riaa stage is a triodeconnected ef184 5ej7 with a ixys ccs as a plate load. Nos tube specification sheet nos tube specification sheet. Biased at 2 volts and running at 100 volts means about 14ma plate current which suits my power transformer. Efb24s damper actuator technical data sheet onoff, spring return, acdc 24 v 8005439038 usa 8668057089 canada 2037918396 latin america caribbean. A framegrid sharp cutoff pentode for use as an if amplifier in television receivers. When the combustion gases reach the 1st pass collector at a temperature near 1100f, the gases are then redirected upwards into two 4 2nd pass heat exchanger tubes. What could happen though so it seems is if you load up a amp with really high running tubes as compared to normal you might clip the preamp.