Metal detector (CB7888E)

This circuit was found in a 1970s RCA publication. Transistors support modern equivalent types. Observe the dimensions of the explorer coil.

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Optical Switch (CB16922E)
The photosensor integrated circuit used in this circuit is not common today. It is a device that...
SVPK Conductive Polymer Capacitors
May 2017 - The new series of new polymer conductive capacitors from Panasonic OS-COM is already in...
Monostable for Assembly Line (CB24490E)
The circuit in the figure is suggested by Texas Instruments in its optoelectronics manual and...