Tube works tube driver circuit

You can see how this system works in the diagram below. Sep, 2017 here we have a combo amp with a solid state power section, fed by two separate preamp circuits. Now it mostly reads like i need a powerdrive circuit to drive a xxxx tube from. Discussion in amps and cabs bg started by paganjack, nov 19, 2008. Qtron pa12 otl tube amplifier delivering the full promise of otl technology. The tube driver is an overdrive with real tube sound. Tube driver power requirements most tube drivers have an internal transformer that works with the mains voltage of the country it was made for. Use other more modern gas discharge tube driver circuits, intended for flatpanel plasma displays such as burroughs panaplex displays.

Real tube by tube works other than one being in super cool enclosure, and the other in a buttugly enclosure, the 4 knob 911 tube drivers and 5 knob real tube versions are basically the same patented b. Cathodefollowerbased output stages are raresurprisingly rare. November072003 finished back to dieters nixie tube page email to dieter as i have dozens of old unknown condition 74141 and 7441 driver chips laying around. Assume that the driver plate load resistor is 50k and the output tubes grid resistor is 200k and the coupling cap is. What would be fun would be to see how it worked if you changed the circuit to up the voltage to the 150200v range that would actually have the tube contributing true triode mode, cathode biased distortion to the circuit. In recent years, led tube lights have come down in price to a level that competes with fluorescent lamps, so the purchase price of the lamps makes led tube lights a very appealing option. The jbaa tube amplifiers can use a 12ax7, 12au7, ecc82, ecc83, 5751, 12sl7, 6sl7 in the driver position and 6v6, 6aq5, 6005, 6y6g, el84, 6bq5, 6f5p, 6p15peb, 6y6ga, 6k6, 6w6, 6gv8, 6bm8, ecl82, ecl85 output tubes.

Old school spring reverb literally uses the movement of springs to delay and replicate an audio signal. I need somebody to either explain or steer me to an explanation of the 12ax712at7 tubes purpose in my jolida jd502p power amp. A transformerless constantcurrent reverb driver introduction. With the mark i driver, the light given off by the tube was quite dim, because the circuit could not provide enough power. Looks like this unit works with bipolar low voltage supply as the tube driver that were constructed after this line of pedals. Firstly, they are very much more efficient than glow lamps, so they produce much more light for less power consumption. The driver circuit is basically just a normal grounded cathode stage but with a beefy tube and a pretty high idle current and therefore low output impedance which is needed to drive the tank. I would never have bought my bk butler tube driver if i had know it hum. This is then fed into the output transformer that ramps up the voltage and provides the appropriate filament power. View and download tube works 6125 operation manual online. All parts of this circuit operate at lethal voltages.

Tube pilot is, according to tc electronic, a legendary tube overdrive modelled, but then further developed by them. With this kit you can build both variants written in the docs. I am feeding a tone through it, and tracing with a scope. A tube is not included in the kit, you can select it suitably to your project. As i composed this page i seem to have lost sight of my original goal. I need somebody to either explain or steer me to an explanation of the 12ax712at7 tube s purpose in my jolida jd502p power amp. How the tmb tone stack works it looks like a simple tone circuit. Review by dick olsher, superior audio magazine is the leading authority in highend. When the switch is pressed c1 quickly discharges though t2 creating a high voltage pulse that ionizes the gas in the tube, causing c3 to discharge. It is true that nixie tubes are no longer in production, so there is a finite supply. The main drawback of this circuit is that it offers no signal voltage gain.

Tubeworks diff between 901 real tube, 903 blue tube and 911 tube driver. Featuring a diehard metal chassis, intuitive control interface, and highlow eq control, the tube works tube driver overdrive captures magic in a box. The driver provides the gain, the cathodyne inverter provides the necessary phaseflip, and they both live as a happy. Practical phase inverters, the heart of any amplifier. Will be interesting to trace one of this units due i cant. I sat down and sketched a super simple driver testing circuit to test them all. It will draw 4x the power it needs, causing it to overheat and damage the circuit. The mini boogeemini matrix circuit included two 12ax7 preamp tubes. Finishing the in9in nixie tube driver for the raspberry pi part 2 october 6, 2019. As long as the driver tube s output signal is below 20 volts peak to peak, everything works as expected. I needed to find a tube that works as good, but doesnt cost a. Valves have a shorter working life than solid state parts due to various failure. I know kit rae says its inferior, different circuit, not the real deal etc.

I wanted to produce a nixie display using easily obtainable parts well except for the nixies, and at the same time keep the parts count low. The classic fluorescent lamp design, which has fallen mostly by the wayside, used a special starter switch mechanism to light up the tube. A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to. Butler started making the 4 knob tube drivers again as a production model under the tube works brand around 199394. The real tube includes a mid range knob, allowing for a wider range of tones to be dialed in. Reverb short for reverberation simulates the reflected sound from a rooms interior. Tube driver practice combo 2 pages amplifier tube works 6 operation manual. What you put in is what you get out, except one side is flippedphase.

Guitar signal enters at upper left and gets amplified by the reverb driver both stages of a 12at7 tube in parallel then flows into the reverb transformer which trades high voltage for current. A beginning section which seems a bit off topic for phase inverters has been moved to a page of its own titled considerations in inverter and driver design. The original tube drivers were made with transformers that run on 110120vac for the north american market. It no longer functions correctly to change the gain. How i went from zero to 3d in one day designing a in9 nixie tube holder september 30, 2019. Here we have a combo amp with a solid state power section, fed by two separate preamp circuits. Conversely, if you plug a tube driver with a 220240v transformer meant for the. Vacuum tube reverb circuits traditionally have used a lowimpedance reverb tank coupled to the driver tube by a small output transformer.

Therefore, an additional tube stage called a driver is used ahead of it. Tubeworks diff between 901 real tube, 903 blue tube and. Start it up how fluorescent lamps work howstuffworks. I have an old 3 knob tube driver by bk butlertube works which has a broken potentiometer in the tube gain position. It spins all the way around and pulls out some too. I have an old 3 knob tube driver by bk butler tube works which has a broken potentiometer in the tube gain position. I did a search and although i found a post or two that tangentially related to this question, i was hoping for a thread dedicated to this. Ive been after one of these for a while, as i have an old tube works mosvalve halfstack amplifier purchased in 92 with the real tube rackmount preamp built in. In the champ amp tube v1a is the first preamp and v1b functions as the output stage driver. Drives a 4 watt fluoro tube from 240v ac with minimum parts. Is it worthwhile to update the driver tube with a new one of the same type. Nixie driver chip 74141 is difficult to purchase, so i decided to design a circuit with optocoupler only.

The coupling cap is charged to 100 volts, and no current is flowing in or out of the output tubes grid. The 5842 can deliver 150 volts peak to peak with distortion below 12 % when operated with a ccs load. Butler also known as built by tube works, chandler. Spring reverb was invented by hammond and first used in their organs to liven up the tone in acoustically flat church interiors. Unfollow tube works tube driver to stop getting updates on your ebay feed. If i dial up the drive pot about half until the sine. Spring reverb rob robinettes car and tube amp website. Tube driver modifications changing tubes this is the simplest, most effective mod for a tube driver.

Finishing the in9in nixie tube driver for the raspberry. The knobs shown on the photo are not included in the kit. The 5842 has been my driver tube of choice ever since, but my supply is getting very low, and they have gotten far too expensive. I noticed that my preamp tubes also 12ax7s were a little worn down sounding and i presume that the driver tube is the same age as the preamp tubes were. I suspect by the reference legendary that they are hinting at the tube driver by b. You might or might not want to know that the tube driver uses an op amp solid state integrated circuit to create its distortion sound, and the tube is used after the distortion stage, in what is known as a starved plate circuit to color the sound of the op amp distortion. Butler then reworked the design again, combining an opamp operational amplifier or. I get preamp tubes in a preamp, but ive found it difficult to find a clear explanation of what the driver and input tubes are actually doing, and their relative importance to the sound of the amp. Bk butler real tube overdrive the tube driver is a boosteroverdrive pedal with a simple vacuum tube driven preamp circuit inside, used by david gilmour of pink floyd, eric johnson, billy gibbons, joe satriani, kenny wayne shepherd, j. Do not attempt to build this or open up a commercial product like i did unless you are totally competent andor qualified to work on dangerous 240v ac mains.

Tc electronics tube pilot budget valve overdrive pedal. Some people find the distortion too rough sounding, at low drive settings and want a smoother, cleaner sound. Nov 09, 2019 most nixie tube drivers require the obsolete and hard to find 7441 or 74141 ttl decoder driver ics, or else high voltage driver transistors. Jan 30, 2018 short impression of the tube works tube driver. Butler designed tube driver circuit with some component differences. Eliminating nixie tube cathode poisoning, biquinary digit ghosting, and heavily oxidized leads april 6, 2019.

The pedal had already been used by gilmour, satriani, bonamassa, j mascis and many other great. The tank is coupled via a coupling cap to prevent dc current from flowing through the driver coil. Tube works mosvalve rt2100 owners manual pdf download. View and download tube works mosvalve rt2100 owners manual online. How tubes work rob robinettes car and tube amp website. The circuit works by effectively chopping up the dc input into something that roughly resembles ac but square wave. It has an effect sendreceive and a footswitch for switching between the channels and turning onoff the reverb. The integrated power amplifiers fully monolithic design features complete short circuit and thermal. The tube driver td752 is a two channel 100 watt amp with spring reverb. When the lamp first turns on, the path of least resistance is through the bypass circuit, and across the starter switch. This project will show how to display nixie tube by arduino and optocoupler chip only.

At some point butler started using a toroid transformer that runs from 120240vac which works with either mains power. If you limit your search for the types that are more abundant, all statements are true. The high output impedance of tube plate circuits is not well matched to. This page contain electronic circuits about electronic vacuum tube or valve circuits circuits and schematics. Bk butler tube driver 910 schematicpot value telecaster. This tanklike little box houses a tube distortion circuit based on the lead. See how to draw tube load lines for more insight into how tubes work. Bk butler real tube overdrive the tube driver is a boosteroverdrive pedal with a simple vacuum tube driven preamp circuit inside, used by david gilmour of pink floyd, eric johnson, billy gibbons, joe satriani, kenny wayne shepherd, j mascis, david holt, and other guitarists. Most nixie tube drivers require the obsolete and hard to find 7441 or 74141 ttl decoder driver ics, or else high voltage driver transistors. When the switch is pressed c1 quickly discharges though t2 creating a high voltage pulse that ionizes the gas in the tube, causing c3 to discharge through the tube, thus crating a bright flash.

The upper tube also acts as both a cathode follower and as a constantcurrent source for the lower tube. The b k butler tube driver has been used by several of rock guitars greats david gilmour. If properly designed, either circuit can offer improved performance over an ordinary resistorloaded tube stage. Able to organically create the tone of a tube amp at the point of breakup, the tube driver has been loved by guitarists since its inception decades ago for that allnatural tone and feel. Tubeworks tube driver sounds like ripped speaker music. Chandler tube driver rackmount tube works 902 real tube rackmount tube works 9 tube driver rackmount tube works 922 real tube ii rackmount.

But that is not the only way to drive a reverb tank using a vacuum tube, and in fact it is not the best way. Bruce heran outlines the design and construction of a high fidelity tube junk box audio amplifier jbaa. Tube works was butlers company, anyway, so this pedal is his product. Tube works 910 tube driver 3 knobs tube works 911 tube driver 4 knobs b. Chandler dynamo tube preamp for musical instruments. This series of articles is meant to be a tutorial on the audio amplifier explaining how each part of the circuit works. Jul 02, 2016 real tube by tube works other than one being in super cool enclosure, and the other in a buttugly enclosure, the 4 knob 911 tube drivers and 5 knob real tube versions are basically the same patented b. The mark ii version employed modifications to increase the output power, including running the transistors at a faster rate through high power resistors. This index has a wide collection of vacuum tube or valve circuits or schematics, that can be very useful for the enginner or the student who need a circuit or schematic for reference or inf at category vacuum tube valve circuit page 5.