This crystal oscillator is indicated for the calibration of IF steps of common radio receivers. The transistor admits equivalent as 2N2222 or BF494. The circuit is from an old American publication.
June 2016 - Mouser can immediately deliver the TPS54xx plate for experiments with Buck converters from...
Indicated to be used at the sensor input of a PC, this circuit was found in an English...
Placed inside the refrigerator, this circuit triggers an oscillator when the part is opened...