Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Your reliance on this data in no way implies any responsibility on the part of, in regards to your ability to buy or sell products at. The 4 a is a beam power tetrode with a maximu m rating of intended an amplifie or modulator. Glass tube, nickelplated brass endcap construction. The honda cbx was a sports motorcycle manufactured by honda from 1978 to 1982. The 4a is a beam power tetrode with a maximu m rating of intended an amplifie or modulator. The biggest advantage that this tube has is that it is still cheap to purchase. Basic electrical power fundamentals 46 kva is larger than kw because loads are inductive such as motors, discharge lighting, reactors and more current is required to keep the magnetic field energized than is turned into heat kw. I have many photos of it now, thanks to ko4oo the hand drawn schematics are straight forward and basic. We welcome the addition of additional documents to this page.
Basic electrical power fundamentals 4 6 kva is larger than kw because loads are inductive such as motors, discharge lighting, reactors and more current is required to keep the magnetic field energized than is turned into heat kw. If you have manuals, catalogs or other pertinent publications to add to this site, please send them as. Eimac jan 5d224250a vacuum tube large glass envelope etched glass early 1970s transmitting tube. One of my favorite amplifier projects was the 4 a and power supply. Can some of you indicate what your real life experience using a 4 a. Can some of you indicate what your real life experience using a 4a. In a few cases, when the 1966 edition omitted graphics on obsolete tubes, i inserted scans from the 1948 ginkins reference book. The 4a8166 is a radialbeam tetrode designed for use in radio transmitters. With almost datasheets and the visitor counter indicates over 4000. One of my favorite amplifier projects was the 4a and power supply. Bias voltage the dc bias voltage for the 4400a should not exceed 500 volts. The eimac 81664a is a radialbeam tetrode with a maximum plate dissipation rating of. Eb 203 d atf697ff at697 atf280f at697f pci analogic device power 23mflops atf697ffzae 0x8000004c. Shop agc series fast acting ferrule fuse, glass tube, 14a, 32v, rohs compliant by bussmann eaton agc14r at graybar, your trusted resource for fast acting.
Filarnent voltage for maximum tube life the filament voltage, as measured directly at the filament pins, should be the rated voltage of 5. Some datasheets are only one page 3050k, some are 810 pages 300k and more. A gold mine of electronic books on line downloadable a must see many on vacuum tubes and tube circuits yahoo rf amplifier discussion group. Ina heroic effort, wb2 wik has created the ultimate 6meter amplifier. Jan 16, 2017 i previously posted a link to my complete schematics and parts lists for a 4 a griddriven amp. Agc series fast acting ferrule fuse, glass tube, 14a, 32v. Eimac 4a typical operating specs for grounded grid operation rare on.
Operating under class ab modulator conditions than of peak driving power, two of tubes will deliver watts of output power. For other taylor tubes, see the entire 1945 taylor tube catalog in pdf format note, 1. American standard air hvac solutions are more than just heating and cooling units. The 4a is the largest of a series of tubes including the 465a, 4125a. Ohmite makes hv resistors that are very cheap in their slimmox series. With a 1047cc inline sixcylinder engine producing 105 bhp 78 kw, it was the flagship of the honda range.
Eimac jan 5d22 4 250a vacuum tube large glass envelope etched glass early 1970s transmitting tube. Designed in collaboration with and validated by clinicians, the ev clinical platform offers you scalability and adaptability for both the or and icu. Tube 4250a or rohre 4250a id246, transmitting tetrode, air cooled, uybase, 5 pins usa, april 1927 and shown. The following scans of audio equipment manuals, brochures, catalogs, reports and other documents are presented for reference use.
Wikipedia vacuum tube sound engineering audiosonica. Beam power tetrode for use as rf power amplifier, oscillator fre quency multiplier, af power amplifier or modulator for fixed. Eimac 4a typical operating specs for grounded grid. The ev clinical platform from edwards lifesciences presents the physiologic status of the patient in an intuitive and meaningful way. Aug 16, 2011 a 4 a needs cooling of the filament pins at all times, a muffin fan is fine for testing and do not run the tube horizontal for testing. These tubes share a common naming convention in which the first number identifies the number of elements contained within the tube. Vt52 we tested 200vplate, 15grid iplate 93ma rp 1kohms mu 6. A comprehensive book providing information on design con. I put the filament transformer on the rf deck chassis close to the tube because the current demand is high, and this helps keep the interconnecting power. Etsy uses cookies and similar technologies to give you a better experience, enabling things like.
I have gotten some powerful sound from four 6l6 tubes in pushpull parallel. Power tube selection charts for highpower audioamplifiers eimac,rcapage 1, rca page 2. In addition to heating and cooling, american standard offers a wide selection of products to improve air quality and, ultimately, make your home a more comfortable place. Eimac power grid tubes quick reference catalog 1969. The sansui receiver not to be confused with the a the ea receiver and also another amp used this as an output tube. Interior tube diameter id or 38mm must be respected to prevent contact with the basic motor tube. Essential characteristics, ge 1973 taschenbuch zum rohrencodex 194849. Variations in filament voltage must be kept within the range from 4. My experience for 6000 volts for a new tube has been well over 2kw output. Having a decent system with 2 nad amps in mono, and a very bright room with hardwood floor, i searched for a vacuum tube design that would mellow out the harshness of the digital onslaught that made me run instead of sit and listen.
I know its possible to use eight 6l6 tubes, which i believe is called pushpull parallel parallel, but im looking into other possible tubes. One way i saved quite a bit was having a sheet metal shop build the cabinet for me. A 4a needs cooling of the filament pins at all times, a muffin fan is fine for testing and do not run the tube horizontal for testing. The permissible current density is not therefore constant. Sansui used the pl36 thats also a 25e5 as an output tube in several of their amps. Philips semiconductors radio audio bipolar mos ca3089 to tda1510a data handbook 1990 philips semiconductors 1990 acrobat 7 pdf 24. Bussmann eaton mdl1810r mdl series time delay fuse. I previously posted a link to my complete schematics and parts lists for a 4a griddriven amp. Which is also supported by bill orrs publications however his tables only go to 5000volts. This produced about 3000 v but the tube was not running efficiently at this lower anode voltage. The wider the bars, the more coefficient n is affected, the more difficult they are to cool and the higher the mutual inductance effects. The eimac 4a is a beam power tetrode with a maximum plate dissipation rating of watts.
The tube may be operated as a class c amplifier in which a single tube can provide up to. The 4a is the largest of a series of tubes including the 465a, 4125a, 4250a, and the 4400a. The ev clinical platform enables you to choose the. Etsy your place to buy and sell all things handmade. The 4 a has an instanton filament so there is no need to have a delay between powering the filament and applying the high voltage. In electronics, a vacuum tube, electron tube in north america, thermionic valve, or valve elsewhere, especially in britain is a device used to amplify, switch, otherwise modify, or create an electrical signal by controlling the movement of electrons in a lowpressure space.