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 is from the owner's manual of the integrated circuits used. The manual is old, which...
The UM3562 integrated circuit is a dedicated circuit found in many toys because it generates three types...
This circuit was found in the ON Semiconductor thyristor manual of the 1980s. As the drive is done by...