Vacuum Tubes Valves
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8051 / 8052
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Vacuum-Tube Valves Circuits
Vacuum-Tube Valves Circuits
60W x2 standard linear type tube amplifiers
Standard linear amplifier according to the standard connection conventional circuit configuration, the power of the beam tube tube according to Figure 1-8, the river. The output stage uses power tubes EL34, KT88. KT100 and other radio beam tetrode,
OTL transistor radio in a power amplifier circuit
Transistor radio shows common OTL power amplifier circuit, VT5 bias resistor driver stage. VT6 and VT7 is a pair of complementary symmetry tube. VT6 germanium material NPN transistor, VT7 is germanium PNP transistor. VT6, VT7 and the biasing resistor
OTL tube amp amplifier production
6N5P the output impedance of 400 ohms low resistance tube used as a parallel push-pull, the output impedance of a single tube half, and then two-three-plate and pipe used in pa
Making small tube amplifier 01
After the original radio with guts shown transformed into a block diagram of the machine. Electrical schematic shown in Figure 1-27, which is a typical type of tube Group A sin
A tube amplifier 01 HI-FI
As a result of high quality materials and advanced technology, the machine output transformer frequency response can reach 10Hz (a 0.8dB) ~ 50Hz (a ldB), to improve the overall
High-quality ultra-linear 10W tube amp
As can be seen from the figure, the self-generated bias amplifier tube for each tube separately to reduce the demanding amateur conditions paired amplifiers camp. Pre-alone DC
As control the discharge tube type delay circuit
As of control type delay circuit discharge Discharge delay circuit and a delay circuit rechargeable compared Discharge delay circuit can obtain a longer delay, and the delay is
By the actual application circuit composed of a color picture tube with TDA6103Q
As shown in FIG grounds TDA6103Q and color picture tube composed of the actual application. R, G, B input signal from the input socket X3, through the input resistor network co
Single-tube constant current charger circuit
As shown in a practical single-tube constant current charger, which play a constant role transistor VT1, its current value is determined by the voltage regulator and R2. Genera
CS37-2 machine tube feeding circuit diagram
As shown in the circuit diagram of the feeding tube Swallow CS37-2 type color TV. Filament voltage by the line flyback transformer, winding current limiting resistor R523 is su
Balanced cross tube inverter circuit
Balanced cross tube inverter circuit is also known Chelles inverter circuit, it can be used as a preamp and 6N10,611 inverted. With the final amplifier tube amplifier using 300
811A produced by 10W tube final amplifier
Characteristics of the transistor 811A to the right, when this type of pipe work there is gate current generating means, in order to effectively discharge grid current, convent
Plus resistive and capacitive silicon tube regulator phase trigger circuit
Circuit characteristics: O simple phase shift range 180. ; good linearity, control accuracy than the first two, and is suitable for low voltage, but less demanding electroplati
500KW Transmitter Schematic
The transmitter was designed with redundancy and cutback (reduced power mode) in mind, giving the transmitter more continuity of service. The final amplifier was divided into 3 separate modules, each using four RCA type UV-898 tubes in push-pull parallel making up a total of 12 output tubes. The outputs of the three modules were combined in...
Tube power amplifier 5W with EL84
This is an image Schematic. No Description available.
Tube Line Preamplifier Project
The interest for circuits of tubes, remains big. Thus I will give completed in enough big degree, circuit of preamplifier. It is mainly constituted by the department of main preamplifier, the department of input selector, delay of application voltage and connection output of preamplifier with the final amplifiers and the department power...
Three Tube PHONO (RIAA) Preamplifiers with ECC83
It is three circuits of RIAA, amplification of low signals of heads [MM], following different solution, each one, as long as it concerns the eq. In the circuit of PHONO 1, we have deephasis with pathetic filter placed between the two departments of tube V1. In PHONO 2, is followed the classic solution of energy deephasis. In PHONO 3, finally...
600 VOLTS POWER SUPPLY FOR QRO
Amateur Radio Transmitters using valves such as 807 or1625 works well with a plate voltage between 600V to 700 Volts.The circuit described here is a full wave voltage doubler. The output voltage is twice the input voltage. For 230V AC input the output will be nearly 600 Volts. Resister R1 is used to limit the initial high voltage and high...
Vox AC 50/4 Amplifier
This is an simple Vox AC amplifier. The circuit is not very clear but is readable.
2a3 Tube Amplifier
Two circuits of audio tubes amplifiers.
Vacuum Tube Preamp
Figure 1 shows distortion variations in red and violet. Notice how the violet wave follows the green wave perfectly during its positive excursion but falls short of the mark during the negative swing. The red wave is more symmetrical, but does not "clip" like an overdriven IC op-amp. This is what I like to call "The Sonic Airbag," or Electric...
Tube Amplifier Schematic
No description available.
Vacuum Tube Theremin Schematic
No description available.
845 20W A1 class monotriode amplifier
This project is finalized, that means it is no longer experimental. This amplifier, altough limited in output power (20W), has been designed to give the best listening pleasure. No compromise has been made during components choice: the 845 output triode is one of the best tube available today in that range of power for single-ended applications,...
A class and push-pull
Pure A class is the most simple topology for designing an amplifier! The tube or the power transistor is loaded directly by the speaker (often thru a transformer, fro impedance matching!), and is biaised at the current necessary for full modulation (that means a maximum power dissipation for no input signal).
2x45 Watt Tube Amplifier
The circuit is simple, yet is capable of excellent performance. I designed it specifically for use as an amplifier for the digital sound card in my computer. Audio input can be from any two-channel line level device such as a television, CD player, or VCR. It is of the tube type, using only 5 tubes total with no more than about 45 Watts power...
CLASSIC MINIMALIST AMPLIFIER
The unit is powered directly from the 120 volt AC line, with no power transformers. Filaments are wired in series, with the total adding up to 117 volts (35 + 35 + 35 + 12). The 35W4 forms a half-wave rectifier, which is filtered by a three-stage RC network. The B+ for the output stage plates and screens are taken from the second capacitor, and...
With all DHT stages (all tubes from Svetlana 1970-s). OK, the input/splitter are not DHT`s but DHP`s - 4P1L - triode wired. Mullard 3-tube input/splitter topology, cap-coupled to cathode bias 6B4G PP. First stage uses battery bias (no cathode resistor). Only paper capacitors everywhere. Gas regulators for the first stage.
Tube dual opamp
Here are photos of a tube unit including an analog multiplier, phase discriminator and a relay control driver (a big relay was inserted in a socket near two potentiometers on the left). Used in ground control gear (don`t ask me - control of what..., all I know it`s ground, not mobile, piece). Chassis is machined of a solid aluminum piece -...
807 and 1625 Valves as power amplifiers
Vacuum Tubes 807 and 1625 are commonly used by hams as power amplifiers. Both tubes are audio power amplifier beam tetrodes in the output stage of high power amplifiers but they are suitable for high frequencies also. Both tubes are equal in their characteristics except for base connection and filament voltage. 807 valve requires about 6.3...
CW Radio with Tubes
For this radio, which I repaired for someone, I made this DIY VL1. Later I found the real tube.
Old German radio with Tubes
The Nora K5W is a German radio from about 1929/1930. Is uses the tubes: 2x REN804, 2x REN1004, RE134 or RE604, RGN1054.
Audio Filters Circuits
Audio Amplifier Circuits
Audio Oscillator Circuits
Audio Mixer Circuits
Audio Equalizer Circuits
Audio Tone Balance Circuits
Beeper Buzzer Circuits
Musical & Effects Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity