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.
This circuit was published in an article in Electronics Now magazine in October 1995. The circuit...
This circuit, for ordinary incandescent lamps, allows you to adjust the lighting level in 2...
July 2017 - Ricoh's new 200mA R1524x voltage regulators are available from Mouser Electronics with...