Found in a Popular Electronics from the 90s, this circuit makes use of an unusual integrated today. The coils are for the medium wave range.
This circuit emits a sound when a magnetic field, of a magnet, for example, approaches the sensor....
Featuring an 8 MHz passband, Texas Instruments TVS912A operational amplifiers can be found at...
ABB drives the energy revolution with newly emerging use of solar power in Singapore Land scarcity has...