With this circuit found in a 1965 Electronic Design, it is possible to read a peak voltage of up to 250 MHz signals.
This basic oscillator with tunnel diode generates a 100 kHz signal with 1 uW output power. The...
This preamplifier for high impedance microphone is designed to make a good addition to the speaked word...
Microphones and other signal sources can be connected at the input of this circuit, with the 4.7...