Vacuum-Tube Valves Circuits

Page 4

NP-100v12: DIY 12AU7 (ECC82) Tube / IRF510 MOSFET Headphone Amplifier

The NP-100v12 is a simple headphone amplifier that allows an entry level builder to experience assembling and listening to their own creation. I use the term builder as electronic experience combined with innovation which allows the creation of a device, rather than simple board stuffing. This amplifier can take on many shapes and sizes; I especia .
12AU7 / 12AX7 Tube Preamplifier Power Supply Schematic

.
OddWatt Audio 5751 SRPP / KT88 Push-Pull Monoblock Tube Amplifier Kits

One of the advantages of hosting a hobby website is that you meet people through email who have similar interests as you. Ever since we posted Bruce`s first OddWatt project on the site I have communicated with a number of DIY hobbyists who have built the various OddWatt amplifiers and have had nothing but very positive comments about the sonic qua .
6418 Tube RIAA Phono Preamplifier

Last year I built and reviewed the low cost Oatley Electronics K272 Tube Stereo Headphone Amplifier Kit. In conversation with Oatley Electronics (located in New South Wales Australia), they told me that the kit became very popular and sold pretty much all over the world. The little headphone amplifier kit was based around new old stock Raytheon J .
Oatley K272 JAN 6418 Valve (Tube) Preamplifier / Headphone Amp Kit

Oatley Electronics in New South Wales Australia makes a few kits based around the Raytheon JAN 6418 sub-miniature valve (tube). I decided to try out the $27AU K272A Stereo Tube Preamplifier - Headphone Driver kit. [Note - the K272 has been replaced with the K272C Stereo Tube Headphone Amplifier Kit which costs $40AU (December 2013). ] A photograph .
DIY Single-Ended (SE) 6L6 / 5881 Tube Amplifier

This past summer I saw Transformers: Revenge of the Fallen and I was inspired to build an enclosure for a vacuum tube amplifier that incorporated the Decepticon logo. The tube amplifier replaces a solid-state amplifier which was driven by a tube preamplifier. For the tube amplifier circuit I used a cutoff pentode (6SJ7 or 6SD7) driving a beam powe .
DIY 6T9 Tube (Valve) Single-Ended Amplifier Kit

The PCB for this amplifier can be purchased from Spare Time Gizmos for $16US. In a single afternoon you can have the whole board assembled and dropped into a chassis of your choice. The value and type of component is laid-out in the parts list. But what I like to do is to put my own twist on each amp I build. If you are not an experienced valve am .
DIY ECC802S (12AU7 / ECC82) Vacuum Tube SRPP Preamplifier

that used a SRPP (shunt-regulated PP) driver stage I started to do some research and modeling on a SRPP. The advantages of such a line stage are much the same as those when a SRPP is used as a driver. Good linearity, low distortion, low impedance output, good power supply noise rejection and modest gain. The research also indicated that the gain n .
Poddwatt: Class-A Stereo Push-Pull EL84 (6BQ5) Vacuum Tube Amplifier

This project is related to the other tube amplifier projects I have posted. It has more than a casual similarity to the first Push-Pull EL84 (6BQ5) Oddwatt project from nearly two years ago. Both tube amplifier projects use EL84 / 6BQ5 tubes and the earlier one used a ECC802S driver while this one uses 5751 driver tubes. The basic circuits are rat .
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project

This is a project that I always wanted to do, but managed to put off for a long time. It has been over a year in the doing. Partly because there are so many good phono preamps in existence and I was slightly concerned that it was beyond my design skills. It took over a year to get it up to my satisfaction. There were several iterations and lots of .
Electronics Circuit Application: New Vacuum Tube Amplifier

The power supply has been simplified. Power transformers and rectifiers have been omitted and some parts have been omitted from the MOSFET voltage regulator circuits: 1N5242 zener diodes between the source and gate and 10k resistors in series with the gate. These parts serve as protection in case of accidental short circuits, but don`t affect the .
Tube Technology

Electron tubes How Electron tubes work, Early tube history, The triode, The tetrode, Beam power tubes, The pentode, Combination tubes, Tube parameters, Ionization (gas-filled) tubes, Display tubes, Microwave tubes, Tubes versus Semiconductors Electron tubes This site is dedicated to Electron Tubes of all kinds. Here you will find information about .
A8V W8EXI 6CL6 One Tube Transmitter

A8V W8EXI 6CL6 One Tube Transmitter. The operation of the 6CL6 transmitter is actually quite sophisticated.. .
Valve audio amplifier technical specification

This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. Please help to improve this article by introducing more precise citations. Valves (also known as vacuum tubes) are very high input impedance (near infinite in most circuits) and high-output impedance devices. They are also hig .
Fluorescent Tube Light DriverCircuit(10W)

.
simple current controlled led tube

The given circuit of a current controlled LED tube light uses a couple of high voltage transistors which works on a very basic principle for implementing the required current control operation. Resistor R2 is placed forconvertingthe rising current to voltage across itself. This voltage is sensed by R2 which immediately conducts and grounds T1s .
making tesla coil and energizing tube

.
tube head amplifier

An amplifier built to drive my Sennheiser HD-600 headphones. Because of the relatively high impedance of these phones, I wanted plenty of voltage available to drive them. Because of the large dynamic range possible with these phones the system had to be very quiet. A high amount of resolution is available with these .
6n3 5670 tube buffer

.
diy tube buffered passive preamp

By sufficiently lowering output impedence of a circuit and supplying enough current to drive cables, it does not suffer the same problems as passive designs. As such, it seems to solve the many of the problems inherent in both active and passive preamps without causing too many additional problems of is own. The problem that I encountered in... .
stereo tube power amplifier schematic

.
mains ac xenon tube flasher circuit

The circuit was taken from one of the old elektor electronics magazine and it is indeed a very cute little circuit which may be used for creating high intensity lighting effects during festivals, parties and fun gatherings. Diodes D1 and D2 along with the capacitors C1 and C2 form a voltage doubler circuit which creates a voltage level twice the v .
one tube regen radio circuit

A regenerative radio works by feeding back a small amount of amplified output of the detector back into the input. Thus it achieves sensitivity far beyond what only a detector could alone. This simple regen radio uses a single tube as it`s detector and amplifier; the "Audion". It`s a great first project for those wishing to bring back some nostalg .
12sl7 srpp kt88 sipp acoustic tubes amp and supplies

A Pair of Push-Pull Class A, Ultra Linear Mono Block Tube Amplifiers that can be used with several different vacuum tubes including KT77 / 6L6GC / KT88 with a 12SL7 driver and 6NO30 tubes. .
tube amp diagram

.
tube amplifier circuit for guitar

.
pic16f84a programmer circuit

.
AA5 6

The common wiring method had one side of the line cord going to a pin on the rectifier tube and the other side going to one terminal of the on/off switch. The other terminal of the on/off switch went to chassis. Suppose you plugged it in so the chassis was "cold" when the radio was turned on. That would mean that the bottom prong of the plug was c .
Amp Circlotron

It`s a power amplifier configuration that was developed in the 1950s. It is called a circlotron because the original idea diagram was drawn as a circle. The best I can do with my graphics program is to show it as a bridge. It`s promise is very low distortion. It`s cost is a total of 3 power supplies, none of them connected in common. Some... .
Amp Gain Block

You see that the feedback is DC coupled, not through a capacitor, from the plate of the second triode to the cathode of the first. An earlier design used AC coupled feedback. This version was unstable at low frequencies. Bode analysis showed that a 3 microfarad coupling capacitor would have been needed to make it stable. The 220 k ohm resistor... .
Amp Monoblock UL

You may be wondering why I am using four tubes. The reason is to get 50 watts without pushing them right to their limit. My tube manual gives two setups for EL34s in ultra linear. Both require a 6 k ohm transformer. Both setups use exactly the same voltages but one says you get 20 watts at 0. 34 percent distortion and the other says you get 34... .
Amp Power Supply More Info

Vacuum tube electronic circuits operate from comparatively high DC voltages (150 to 600 volts). The Electric Utility supplies 120 volts AC. We have studied transformers and, therefore, we know that the 120 vAC line voltage could be stepped up to the necessary range but it would still be AC. The internal circuits of any device you can think of... .

«
<
2
3
4
5
6
>
»

Related Categories

Audio Filters Circuits

Stereo Circuits

Ultrasonic Circuits

Audio Amplifier Circuits

Audio Oscillator Circuits

Preamplifier Circuits

Audio Mixer Circuits

Audio Equalizer Circuits

Audio Tone Balance Circuits

Beeper Buzzer Circuits

Musical & Effects Circuits

Microphone Circuits

New Circuits

New Tutorials

QR code Link