This circuit for the 40 MHz band was published in Radio Electronics magazine in December 1957. Its purpose was to monitor the signals of the Russian satellite launched at the time.
Common general purpose silicon diodes when direct biased provide a voltage fall of about 0.6 to...
This circuit behaves as a voltage controlled resistor and can serve as a small load. The circuit is...
STMicroelectronics MP23AB02B MEMS Audio Sensor is a compact, low-power microphone built with a...