This differential pulse shaping amplifier was found in documentation from the 1980s. Switching transistors equivalent to the originals can be used.
This detector with ultra-low deviation was found in an American documentation from the 90s....
May 2017 - Mouser Electronics announced the availability of the LMX2491 a new PLL for frequencies...
The indicated circuit performs a slow charge of 12 V batteries maintaining a constant current of...