Tubes

Articles
Title
One Tube Telegraphic Oscillator (T012E)
One Tube MW Receiver (T013E)
Tubes (T011E)
Grid Controlled Rectifier (T010E)
Modulated High-Frequency Oscillator (T009E)
Chatode-Coupled duo Triode Oscillator (T008E)
Experimental Audio Oscillator (T007E)
Staircase Generator (T006E)
Schmitt Trigger (T005E)
Electronic Switch (T004E)
High-Fidelity Audio Amplifier (T003E)
Spiral Time Base Generator (T003E)
Code Practice Oscillator (T002E)
Tubes – How they work (T001E)

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Optoelectronic Detector (CB4615E)
In this circuit the photo-transistor signal is amplified by a Darlington step and then applied to a...
Microphone Effect Circuit (CB13198E)
The purpose of this circuit of an American publication from the 70s is to move the signal from an...
High Frequency Switch (CB6007E)
This 80's circuit can be implemented with modern equivalent FETs with lower on resistance. The...