We find this circuit in American documentation from the 1980s. It consists of a frequency folder using a varicap. The capacitors and coils depend on the frequency of operation.
September 2016 - can already be found at Mouser Electronics new integrated circuit from Texas...
This circuit to increase the sensitivity of instruments to 100 uA (or close to it) was found in...
This amplifier uses hybrid modules Sanken and can provide powers of 10 W or 20, depending on the...