Found in an Electronic Design of 1964, this circuit is intended to the signal amplification in the 88 to 108 MHz band. The transistor can be a modern equivalent.
For measurements between 30 and 40º C this circuit was found in the documentation of 1968. The...
This circuit was found in the ON Semiconductor's Thyristor manual of the 1980s. The high quality...
Found in an old Radio Electronics, this circuit applies to frequency meters for frequencies up to 100 MHz....