This circuit was found in a Popular Electronics from the 90's. The frequencies depend on the components indicated in the table next to the diagram.
This microcontrolled null adjustment for operational amplifiers was obtained in a Linear...
This inverter is critical for transformers and can use modern equivalent transistors like MJ2955 on...
May 2017 - Mouser Electronics is announcing the availability of Omron's new 2JCIE-BL01 environment sensors for...