tvr-c3 - KevinChant.com
... playback head can be directly attached to the vertical amplifier of the CRC and output checked, including supersonic bias. CIRCUIT DESCRIPTION. The circuit, shown at the rear, can be divided into four main sections - cathode ray tube, power supply, vertical amplifier and time base with attached hori ...
... playback head can be directly attached to the vertical amplifier of the CRC and output checked, including supersonic bias. CIRCUIT DESCRIPTION. The circuit, shown at the rear, can be divided into four main sections - cathode ray tube, power supply, vertical amplifier and time base with attached hori ...
the ux-171-a class ab1 push pull power amplifier
... After studying and restoring the Grebe MU-1 radio from the mid 1920’s it occurred to me that it would be great to have an “active speaker” for it. This modern term had not been coined in the 1920’s but is commonplace today. Most radios of the 1920’s era had a simple single triode output stage based ...
... After studying and restoring the Grebe MU-1 radio from the mid 1920’s it occurred to me that it would be great to have an “active speaker” for it. This modern term had not been coined in the 1920’s but is commonplace today. Most radios of the 1920’s era had a simple single triode output stage based ...
Visit us at www.mr
... If there is a wiring short circuit or a defect, there is normally enough current in your batteries to set fire to your precious Model. Fuses, Diodes, Resistors and Suppression Kits are available on our website at www.mr-rcworld.co.uk Solder ...
... If there is a wiring short circuit or a defect, there is normally enough current in your batteries to set fire to your precious Model. Fuses, Diodes, Resistors and Suppression Kits are available on our website at www.mr-rcworld.co.uk Solder ...
Stereo Phono/Line Preamplifier Ultra 4B SE Special Edition User’s Manual
... Capacitor C1 sets the low frequency breakpoint in the RIAA equalization curve at 50 Hz. The negative grid bias is obtained through the grid resistor R2. The output from this stage is capacitor coupled through C2 to the second stage which uses the second section of the 12SC7 also configured as a comm ...
... Capacitor C1 sets the low frequency breakpoint in the RIAA equalization curve at 50 Hz. The negative grid bias is obtained through the grid resistor R2. The output from this stage is capacitor coupled through C2 to the second stage which uses the second section of the 12SC7 also configured as a comm ...
Tubes, Tubes, Tubes All the good stuff!
... The 7591 has been the rarest tube in the world since about 1992. All NOS tubes are long since gone. Sovtek has made this great tube again, duplicating the super high performance of the 7591 tube, along with the correct pin out and specifications. Plug em into that Ampeg, Gibson, or Scott stereo and ...
... The 7591 has been the rarest tube in the world since about 1992. All NOS tubes are long since gone. Sovtek has made this great tube again, duplicating the super high performance of the 7591 tube, along with the correct pin out and specifications. Plug em into that Ampeg, Gibson, or Scott stereo and ...
X-ray tube - El Camino College
... Computed Radiography is an indirect type of imaging system. The receptor used within a CR cassette is called a photostimulable imaging plate (PSP) and it absorbs the radiation exiting the patient. The exposed plate is processed in a CR reader, where the absorbed energy is extracted. The information ...
... Computed Radiography is an indirect type of imaging system. The receptor used within a CR cassette is called a photostimulable imaging plate (PSP) and it absorbs the radiation exiting the patient. The exposed plate is processed in a CR reader, where the absorbed energy is extracted. The information ...
GEIGER COUNTER
... secondary winding of transformer T1, the switch and Resistor R6 to the control grid of the 1U5 tube as fixed bias voltage. Capacitor C4 is used to filter this bias voltage supply. Capacitor C5 provides additional filtering, after regulation of the Geiger tube supply voltage. Resistor R5 is the Geige ...
... secondary winding of transformer T1, the switch and Resistor R6 to the control grid of the 1U5 tube as fixed bias voltage. Capacitor C4 is used to filter this bias voltage supply. Capacitor C5 provides additional filtering, after regulation of the Geiger tube supply voltage. Resistor R5 is the Geige ...
Edition Tube 25th Anniversary
... • Did a fuse trip although there was no plausible exposure to mechanical shocks, extreme heat, dust cause? Aging fuses, particle ionization in the tube and moisture. Ensure the cooling vents are not or spark-over due to power spikes may cause this obstructed during operation. type of proble ...
... • Did a fuse trip although there was no plausible exposure to mechanical shocks, extreme heat, dust cause? Aging fuses, particle ionization in the tube and moisture. Ensure the cooling vents are not or spark-over due to power spikes may cause this obstructed during operation. type of proble ...
4CX1500B 8660
... this maximum value should not be exceeded. The top cap on the anode cooler may be used as a plate terminal at low frequencies or a circular clamp or spring-finger collet encircling the cylindrical outer surface of the anode cooler may be used at high frequencies. Points of electrical contact with th ...
... this maximum value should not be exceeded. The top cap on the anode cooler may be used as a plate terminal at low frequencies or a circular clamp or spring-finger collet encircling the cylindrical outer surface of the anode cooler may be used at high frequencies. Points of electrical contact with th ...
Dee. 26, 195o E. FRANK Er`AL 2,535,912
... prises tWo ampliñer tubes, V2 and Va, connected in cascade. The negative video signal from the radar receiving equipment is applied to the con trol grid of tube V2 through condenser C3. This ...
... prises tWo ampliñer tubes, V2 and Va, connected in cascade. The negative video signal from the radar receiving equipment is applied to the con trol grid of tube V2 through condenser C3. This ...
A Low-Mu Triode Preamp - Pete Millett`s DIY Audio pages
... instead sends it through the higherquality polypropylene caps, sounds better than relying on the large electrolytic cap in the filter. Filaments are powered with 6.3V AC, which is biased up to about 45V DC, derived from the power-supply bleeder resistor. This bias is needed to stay within the 100V m ...
... instead sends it through the higherquality polypropylene caps, sounds better than relying on the large electrolytic cap in the filter. Filaments are powered with 6.3V AC, which is biased up to about 45V DC, derived from the power-supply bleeder resistor. This bias is needed to stay within the 100V m ...
PS Mods Individ EFB Bias ST-35
... with similar, rather than greatly varying characteristics. That will ensure better AC (signal) balance, and therefore, lower distortion than would otherwise result. The procedure for setting the bias on the four individual output tubes is given in Appendix A. The remaining changes to the amplifier a ...
... with similar, rather than greatly varying characteristics. That will ensure better AC (signal) balance, and therefore, lower distortion than would otherwise result. The procedure for setting the bias on the four individual output tubes is given in Appendix A. The remaining changes to the amplifier a ...
directions and other pertinent information follows
... We strongly recommend using “Clever Stand-By” instead of leaving the player fully powered when not in use. Front panel displays can fade over time with extended use. Putting the player in stand-by when not in use helps preserve and keep the display brighter. ...
... We strongly recommend using “Clever Stand-By” instead of leaving the player fully powered when not in use. Front panel displays can fade over time with extended use. Putting the player in stand-by when not in use helps preserve and keep the display brighter. ...
Chapter-4
... crystals have relatively free electrons. If however, carefully controlled amount of impurities are added , the number of free electrons, and consequently the conductivity , is increased. When certain other impurities are introduced an electron deficiency, or hole, is produced. Semiconductor material ...
... crystals have relatively free electrons. If however, carefully controlled amount of impurities are added , the number of free electrons, and consequently the conductivity , is increased. When certain other impurities are introduced an electron deficiency, or hole, is produced. Semiconductor material ...
Optimisation of kilovoltage according to patient size and contrast
... voltage settings. Thus, lower net attenuation and maximal benefit from the iodine k-edge absorption is simultaneously achieved. • However, higher tube voltages are typically required when larger patients are scanned, especially without contrast enhancement. ...
... voltage settings. Thus, lower net attenuation and maximal benefit from the iodine k-edge absorption is simultaneously achieved. • However, higher tube voltages are typically required when larger patients are scanned, especially without contrast enhancement. ...
Franck-Hertz experiment for neon atoms
... temperature, while the intensity of the current flowing through the lamp is low. A decrease in the gas pressure leads to extension of the free path of electrons and an increase in the intensity of the anode current. The electrons accelerated to high speed between the cathode and grid rather easily o ...
... temperature, while the intensity of the current flowing through the lamp is low. A decrease in the gas pressure leads to extension of the free path of electrons and an increase in the intensity of the anode current. The electrons accelerated to high speed between the cathode and grid rather easily o ...
Integrated Stereo/Mono Power Amplifier Stealth 60i Users' Manual (Beta)
... Leave the bias selector switch in the OFF position during the power-on procedure. With the tubes installed, connect the IEC power cord to the fused AC input receptacle on the rear of the chassis. Plug the cord into an ac outlet rated for at least 200 W (110-125 VAC, 60 Hz). The power switches are on ...
... Leave the bias selector switch in the OFF position during the power-on procedure. With the tubes installed, connect the IEC power cord to the fused AC input receptacle on the rear of the chassis. Plug the cord into an ac outlet rated for at least 200 W (110-125 VAC, 60 Hz). The power switches are on ...
Valves at Low Plate Voltages (2)
... PL504 in a small class A loudspeaker amplifier? The PL504 is a physically large valve with a Magnoval base, which was used in the line output stages of television sets. Its heater requires 300 mA at 27 V. It therefore makes sense to use an anode voltage of 27 V also. In its intended application in t ...
... PL504 in a small class A loudspeaker amplifier? The PL504 is a physically large valve with a Magnoval base, which was used in the line output stages of television sets. Its heater requires 300 mA at 27 V. It therefore makes sense to use an anode voltage of 27 V also. In its intended application in t ...
j/“W J n
... pair of charging resistances, one of the resist age is prevented. Depending upon the setting ances ‘being connected to the high side of the con of the potentiometer 27, the rate of recovery of denser and the other of the resistances being the voltage of the condenser [5 may be varied as connected to ...
... pair of charging resistances, one of the resist age is prevented. Depending upon the setting ances ‘being connected to the high side of the con of the potentiometer 27, the rate of recovery of denser and the other of the resistances being the voltage of the condenser [5 may be varied as connected to ...
Owner`s Operating Manual
... The unit will not perform to its full sonic potential when first installed in your system. This is partially due to a residual polarization of the dielectric materials used in the PCB, like resistors, capacitors, chokes, transformers and internal wiring. As music is played through the unit, the elec ...
... The unit will not perform to its full sonic potential when first installed in your system. This is partially due to a residual polarization of the dielectric materials used in the PCB, like resistors, capacitors, chokes, transformers and internal wiring. As music is played through the unit, the elec ...
pat2817708_fender.pdf
... 'The srangcment disclosed herein is capable of amplifyand has the other one of its terminals connected to ing signals of audible frequencies, using a phase splitting jack 11A. Jack 11B is normally grounded through network in which the amplified signals are modulated t o the normally closed switches ...
... 'The srangcment disclosed herein is capable of amplifyand has the other one of its terminals connected to ing signals of audible frequencies, using a phase splitting jack 11A. Jack 11B is normally grounded through network in which the amplified signals are modulated t o the normally closed switches ...
Gas-Filled Tubes - Talking Electronics
... impossible with a gas diode. However, if a third electrode, known as control grid is introduced in a gas diode, this control is possible. The tube is then known as hot-cathode gas triode or thyratron. By controlling the negative potential on the control grid, the tube can be fired at any plate poten ...
... impossible with a gas diode. However, if a third electrode, known as control grid is introduced in a gas diode, this control is possible. The tube is then known as hot-cathode gas triode or thyratron. By controlling the negative potential on the control grid, the tube can be fired at any plate poten ...
CAD-280SA V-12R Manual
... Audio. You should get a few years or more from the output tubes with everyday usage and many years of use from the smaller 12BZ7 and EL-84 tubes. Other types of output tubes may be used in the V-12R power amplifiers; 6L6, 6V6, KT-66, KT-88, 6550C, KT90, KT-99 or EL-34 tubes are all acceptable for us ...
... Audio. You should get a few years or more from the output tubes with everyday usage and many years of use from the smaller 12BZ7 and EL-84 tubes. Other types of output tubes may be used in the V-12R power amplifiers; 6L6, 6V6, KT-66, KT-88, 6550C, KT90, KT-99 or EL-34 tubes are all acceptable for us ...
High Definition Stereo Headphone Amplifier Ear+ Purist HD Ear+ HD
... saturation of the iron core, para (parallel)-feed is used so only the signal flows through coupling capacitor C3a and to the primary of TR3a. The turns ratio of TR3a is approximately 8.7:1, which reduces the output voltage swing available to drive the headphones. However, it also provides an impedan ...
... saturation of the iron core, para (parallel)-feed is used so only the signal flows through coupling capacitor C3a and to the primary of TR3a. The turns ratio of TR3a is approximately 8.7:1, which reduces the output voltage swing available to drive the headphones. However, it also provides an impedan ...
APX-100 amplifier The BEAG is a successful product with a 1970s
... Mark each end of the coils with a different colour plastic tube, tape or insulation in order to know the phasing of each coil. This is to prevent that they are connected wrong later on. To check the complete transformer the following test can be made. The secondary windings are connected to a 24VAC ...
... Mark each end of the coils with a different colour plastic tube, tape or insulation in order to know the phasing of each coil. This is to prevent that they are connected wrong later on. To check the complete transformer the following test can be made. The secondary windings are connected to a 24VAC ...
Vacuum tube
In electronics, vacuum tube, electron tube, tube (in North America), or valve (in Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.Vacuum tubes mostly rely on thermionic emission of electrons from a hot filament or a cathode heated by the filament. This type is called a thermionic tube or thermionic valve. A phototube, however, achieves electron emission through the photoelectric effect. Not all valves/electron tubes are evacuated ""vacuum tubes""; gas-filled tubes are similar devices containing a gas, typically at low pressure, which exploit phenomena related to electric discharge in gases, usually without a heater.The simplest vacuum tube, the diode, contains only a heater, a heated electron-emitting cathode (the filament itself acts as the cathode in some diodes), and a plate (anode). Current can only flow in one direction through the device between the two electrodes, as electrons emitted by the cathode travel through the tube and are collected by the anode. Adding one or more control grids within the tube allows the current between the cathode and anode to be controlled by the voltage on the grid or grids. Tubes with grids can be used for many purposes, including amplification, rectification, switching, oscillation, and display.Invented in 1904 by John Ambrose Fleming, vacuum tubes were a basic component for electronics throughout the first half of the twentieth century, which saw the diffusion of radio, television, radar, sound reinforcement, sound recording and reproduction, large telephone networks, analog and digital computers, and industrial process control. Although some applications had counterparts using earlier technologies such as the spark gap transmitter or mechanical computers, it was the invention of the vacuum tube that made these technologies widespread and practical.In the 1940s the invention of semiconductor devices made it possible to produce solid-state devices, which are smaller, more efficient, more reliable, more durable, and cheaper than tubes.Hence, from the mid-1950s solid-state devices such as transistors gradually replaced tubes. The cathode-ray tube (CRT) remained the basis for televisions and video monitors until superseded in the 21st century. However, there are still a few applications for which tubes are preferred to semiconductors; for example, the magnetron used in microwave ovens, and certain high frequency amplifiers.