This circuit operates with an AM radio tuned to or near 900 kHz if there is a station at this location. The coil consists of 60 + 40 turns 28 on a ferrite rod.
We find this circuit in American documentation from the 1980s. It consists of a frequency folder...
This circuit of a Popular Electronics is intended to control a wiper. The circuit consists of a...
Although most common piezoelectric transducers have a reduction in performance at frequencies...