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Chapter 14 VACUUM TUBE RECEIVERS AND TRANSMITTERS
http://qrparci.org/wa0itp/chap14.pdf#:~:text=The%20oscillator%20below%20is%20the%20circuit%20used%20most,settled%20on%20using%20regulated%20150%20volts%20plate%20voltage.
Classic Vintage Vacuum Tube Oscillator - Gadgetronicx
https://www.gadgetronicx.com/vintage-vacuum-tube-oscillator/
It uses a dip switch and when you want to choose a frequency range, you just enable two consecutive switches. The frequency range table of Vacuum tube oscillator is. 4.7Mohm / 180pF – 560pF / switch 1 and 2 from left to right / 60Hz – 188Hz. 1.5Mohm / 180pF – 560pF / switch 4 and 5 from left to right / 188Hz – 590Hz.
Vacuum Tube Audio Amplifier - All About Circuits
https://www.allaboutcircuits.com/textbook/experiments/chpt-5/vacuum-tube-audio-amplifier/
A transformer is essential at the output of the amplifier circuit for “matching” the impedances of vacuum tube and speaker. Since the vacuum tube is a high-voltage, low-current device, and most speakers are low-voltage, high-current devices, the mismatch between them would result in very audio low power output if they were directly connected.
vacuum tube oscillator - YouTube
https://www.youtube.com/watch?v=BNGRlvWflJ0
my first vacuum tube circuit. the audio didnt come out so good so turn up your speakers. on the instuctables website this was a VTTC circuit but i made a aud...
Synth schematics--::--Vacuum Tube VCO
https://www.schmitzbits.de/vtvco.html
Vacuum tube VCO A few warning words: This circuit uses pretty high voltage levels. ... The audio path as well as the oscillator core is built entirely with tubes. The circuit: On the left you can see a partly drawn exponential convertor. I only drew it to show the features of this part of the circuit.
Chapter 4 - Designing Vacuum Tube Circuits
http://www.milas.spb.ru/~kmg/files/literature/Power%20Vacuum%20Tubes%20Handbook%20Second%20Edition/PDFs/ch04.pdf
Any number of configurations may be used to generate RF signals using vacuum tubes. Circuit design is dictated primarily by the operating frequency, output power, type of modulation, duty cycle, and available power supply. Tube circuits can be di-vided generally by their operating class and type of modulation employed. As dis-
Vacuum Tube Audio
https://www.vacuumtubeaudio.info/
This site supports The TAB Guide to Vacuum Tube Audio in a number of ways, including the following: For more detailed information about the book see the Table of Contents and the Preface. This book was written in 2010 and published in 2011. At the time, the only way to build a vacuum tube amplifier was to settle on a design, acquire the parts ...
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